Java\u306b\u304a\u3044\u3066\u3001Comparable\u3068Comparator\u306f\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u30b3\u30ec\u30af\u30b7\u30e7\u30f3\u3092\u30bd\u30fc\u30c8\u3059\u308b\u969b\u306b\u975e\u5e38\u306b\u4fbf\u5229\u3067\u3059\u3002Java\u306f\u3001\u30d7\u30ea\u30df\u30c6\u30a3\u30d6\u578b\u306e\u914d\u5217\u3084\u30e9\u30c3\u30d1\u30fc\u30af\u30e9\u30b9\u306e\u914d\u5217\u3001\u30ea\u30b9\u30c8\u3092\u30bd\u30fc\u30c8\u3059\u308b\u305f\u3081\u306e\u7d44\u307f\u8fbc\u307f\u30e1\u30bd\u30c3\u30c9\u3092\u63d0\u4f9b\u3057\u3066\u3044\u307e\u3059\u3002\u307e\u305a\u306f\u3001\u30d7\u30ea\u30df\u30c6\u30a3\u30d6\u578b\u3068\u30e9\u30c3\u30d1\u30fc\u30af\u30e9\u30b9\u306e\u914d\u5217\uff0f\u30ea\u30b9\u30c8\u3092\u30bd\u30fc\u30c8\u3059\u308b\u65b9\u6cd5\u3092\u5b66\u3073\u3001\u305d\u306e\u5f8c\u3001java.lang.Comparable\u3068java.util.Comparator\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092\u4f7f\u7528\u3057\u3066\u30ab\u30b9\u30bf\u30e0\u30af\u30e9\u30b9\u306e\u914d\u5217\uff0f\u30ea\u30b9\u30c8\u3092\u30bd\u30fc\u30c8\u3059\u308b\u65b9\u6cd5\u3092\u898b\u3066\u307f\u307e\u3057\u3087\u3046\u3002\u4ee5\u4e0b\u306b\u3001\u30d7\u30ea\u30df\u30c6\u30a3\u30d6\u578b\u3084\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u914d\u5217\u3084\u30ea\u30b9\u30c8\u3092\u7c21\u5358\u306a\u30d7\u30ed\u30b0\u30e9\u30e0\u3067\u30bd\u30fc\u30c8\u3059\u308b\u65b9\u6cd5\u3092\u793a\u3057\u307e\u3059\u3002<\/p>\n
package com.scdev.sort;\r\n\r\nimport java.util.ArrayList;\r\nimport java.util.Arrays;\r\nimport java.util.Collections;\r\nimport java.util.List;\r\n\r\npublic class JavaObjectSorting {\r\n\r\n \/**\r\n * This class shows how to sort primitive arrays, \r\n * Wrapper classes Object Arrays\r\n * @param args\r\n *\/\r\n public static void main(String[] args) {\r\n \/\/sort primitives array like int array\r\n int[] intArr = {5,9,1,10};\r\n Arrays.sort(intArr);\r\n System.out.println(Arrays.toString(intArr));\r\n \r\n \/\/sorting String array\r\n String[] strArr = {\"A\", \"C\", \"B\", \"Z\", \"E\"};\r\n Arrays.sort(strArr);\r\n System.out.println(Arrays.toString(strArr));\r\n \r\n \/\/sorting list of objects of Wrapper classes\r\n List<String> strList = new ArrayList<String>();\r\n strList.add(\"A\");\r\n strList.add(\"C\");\r\n strList.add(\"B\");\r\n strList.add(\"Z\");\r\n strList.add(\"E\");\r\n Collections.sort(strList);\r\n for(String str: strList) System.out.print(\" \"+str);\r\n }\r\n}\r\n<\/code><\/pre>\n\u4e0a\u8a18\u306e\u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u51fa\u529b\u306f\u6b21\u306e\u901a\u308a\u3067\u3059\u3002<\/p>\n
[1, 5, 9, 10]\r\n[A, B, C, E, Z]\r\n A B C E Z\r\n<\/code><\/pre>\n\u4eca\u5ea6\u306f\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u914d\u5217\u3092\u4e26\u3079\u66ff\u3048\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n
package com.scdev.sort;\r\n\r\npublic class Employee {\r\n\r\n private int id;\r\n private String name;\r\n private int age;\r\n private long salary;\r\n\r\n public int getId() {\r\n return id;\r\n }\r\n\r\n public String getName() {\r\n return name;\r\n }\r\n\r\n public int getAge() {\r\n return age;\r\n }\r\n\r\n public long getSalary() {\r\n return salary;\r\n }\r\n\r\n public Employee(int id, String name, int age, int salary) {\r\n this.id = id;\r\n this.name = name;\r\n this.age = age;\r\n this.salary = salary;\r\n }\r\n\r\n @Override\r\n \/\/this is overridden to print the user-friendly information about the Employee\r\n public String toString() {\r\n return \"[id=\" + this.id + \", name=\" + this.name + \", age=\" + this.age + \", salary=\" +\r\n this.salary + \"]\";\r\n }\r\n\r\n}\r\n<\/code><\/pre>\n\u79c1\u304c\u4f7f\u7528\u3057\u305f\u30b3\u30fc\u30c9\u306f\u3001\u5f93\u696d\u54e1\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u914d\u5217\u3092\u30bd\u30fc\u30c8\u3059\u308b\u305f\u3081\u306e\u3082\u306e\u3067\u3059\u3002<\/p>\n
\/\/sorting object array\r\nEmployee[] empArr = new Employee[4];\r\nempArr[0] = new Employee(10, \"Mikey\", 25, 10000);\r\nempArr[1] = new Employee(20, \"Arun\", 29, 20000);\r\nempArr[2] = new Employee(5, \"Lisa\", 35, 5000);\r\nempArr[3] = new Employee(1, \"Pankaj\", 32, 50000);\r\n\r\n\/\/sorting employees array using Comparable interface implementation\r\nArrays.sort(empArr);\r\nSystem.out.println(\"Default Sorting of Employees list:\\n\"+Arrays.toString(empArr));\r\n<\/code><\/pre>\n\u3053\u306e\u30b3\u30fc\u30c9\u3092\u5b9f\u884c\u3057\u3088\u3046\u3068\u3057\u305f\u3068\u3053\u308d\u3001\u6b21\u306e\u30e9\u30f3\u30bf\u30a4\u30e0\u4f8b\u5916\u304c\u767a\u751f\u3057\u307e\u3057\u305f\u3002<\/p>\n
Exception in thread \"main\" java.lang.ClassCastException: com.scdev.sort.Employee cannot be cast to java.lang.Comparable\r\n\tat java.util.ComparableTimSort.countRunAndMakeAscending(ComparableTimSort.java:290)\r\n\tat java.util.ComparableTimSort.sort(ComparableTimSort.java:157)\r\n\tat java.util.ComparableTimSort.sort(ComparableTimSort.java:146)\r\n\tat java.util.Arrays.sort(Arrays.java:472)\r\n\tat com.scdev.sort.JavaSorting.main(JavaSorting.java:41)\r\n<\/code><\/pre>\nComparable \u306f\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u81ea\u7136\u306a\u9806\u5e8f\u4ed8\u3051\u304c\u53ef\u80fd\u306a\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3067\u3059\u3002
\nComparator \u306f\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u30ab\u30b9\u30bf\u30e0\u306a\u9806\u5e8f\u4ed8\u3051\u304c\u53ef\u80fd\u306a\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3067\u3059\u3002<\/h2>\n
Java\u3067\u306f\u3001Arrays\u3084Collections\u306e\u30bd\u30fc\u30c8\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3059\u308b\u305f\u3081\u306b\u306f\u3001\u30ab\u30b9\u30bf\u30e0\u30af\u30e9\u30b9\u3054\u3068\u306bComparable\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092\u5b9f\u88c5\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002Comparable\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306b\u306f\u3001\u30bd\u30fc\u30c8\u30e1\u30bd\u30c3\u30c9\u306b\u3088\u3063\u3066\u4f7f\u7528\u3055\u308c\u308bcompareTo(T obj)\u30e1\u30bd\u30c3\u30c9\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u308c\u3092\u78ba\u8a8d\u3059\u308b\u305f\u3081\u306b\u306f\u3001\u30e9\u30c3\u30d1\u30fc\u30af\u30e9\u30b9\u3001\u6587\u5b57\u5217\u30af\u30e9\u30b9\u3001\u307e\u305f\u306f\u65e5\u4ed8\u30af\u30e9\u30b9\u3092\u78ba\u8a8d\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u3053\u306e\u30e1\u30bd\u30c3\u30c9\u3092\u4e0a\u66f8\u304d\u3057\u3066\u3001\u5f15\u6570\u3068\u3057\u3066\u6e21\u3055\u308c\u308b\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3088\u308a\u3082\u300cthis\u300d\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u304c\u5c0f\u3055\u3044\u5834\u5408\u306f\u8ca0\u306e\u6574\u6570\u3001\u7b49\u3057\u3044\u5834\u5408\u306f\u30bc\u30ed\u3001\u5927\u304d\u3044\u5834\u5408\u306f\u6b63\u306e\u6574\u6570\u3092\u8fd4\u3059\u3088\u3046\u306b\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002Employee\u30af\u30e9\u30b9\u306bComparable\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092\u5b9f\u88c5\u3057\u305f\u5f8c\u3001\u6b21\u306e\u3088\u3046\u306aEmployee\u30af\u30e9\u30b9\u304c\u5f97\u3089\u308c\u307e\u3059\u3002<\/p>\n
package com.scdev.sort;\r\n\r\nimport java.util.Comparator;\r\n\r\npublic class Employee implements Comparable<Employee> {\r\n\r\n private int id;\r\n private String name;\r\n private int age;\r\n private long salary;\r\n\r\n public int getId() {\r\n return id;\r\n }\r\n\r\n public String getName() {\r\n return name;\r\n }\r\n\r\n public int getAge() {\r\n return age;\r\n }\r\n\r\n public long getSalary() {\r\n return salary;\r\n }\r\n\r\n public Employee(int id, String name, int age, int salary) {\r\n this.id = id;\r\n this.name = name;\r\n this.age = age;\r\n this.salary = salary;\r\n }\r\n\r\n @Override\r\n public int compareTo(Employee emp) {\r\n \/\/let's sort the employee based on an id in ascending order\r\n \/\/returns a negative integer, zero, or a positive integer as this employee id\r\n \/\/is less than, equal to, or greater than the specified object.\r\n return (this.id - emp.id);\r\n }\r\n\r\n @Override\r\n \/\/this is required to print the user-friendly information about the Employee\r\n public String toString() {\r\n return \"[id=\" + this.id + \", name=\" + this.name + \", age=\" + this.age + \", salary=\" +\r\n this.salary + \"]\";\r\n }\r\n\r\n}\r\n<\/code><\/pre>\n\u4ee5\u4e0a\u306e\u30b9\u30cb\u30da\u30c3\u30c8\u3092\u5b9f\u884c\u3057\u3066\u5f93\u696d\u54e1\u306e\u914d\u5217\u3092\u30bd\u30fc\u30c8\u3057\u3001\u51fa\u529b\u7d50\u679c\u3092\u8868\u793a\u3059\u308b\u3068\u3001\u3053\u3061\u3089\u3067\u3059\u3002<\/p>\n
Default Sorting of Employees list:\r\n[[id=1, name=Pankaj, age=32, salary=50000], [id=5, name=Lisa, age=35, salary=5000], [id=10, name=Mikey, age=25, salary=10000], [id=20, name=Arun, age=29, salary=20000]]\r\n<\/code><\/pre>\n\u5f93\u696d\u54e1\u306e\u914d\u5217\u304cID\u3067\u6607\u9806\u306b\u30bd\u30fc\u30c8\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u304c\u308f\u304b\u308a\u307e\u3059\u3002\u3057\u304b\u3057\u3001\u307b\u3068\u3093\u3069\u306e\u5b9f\u969b\u306e\u30b7\u30ca\u30ea\u30aa\u3067\u306f\u3001\u7570\u306a\u308b\u30d1\u30e9\u30e1\u30fc\u30bf\u306b\u57fa\u3065\u3044\u3066\u30bd\u30fc\u30c8\u3057\u305f\u3044\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u4f8b\u3048\u3070\u3001CEO\u306e\u5834\u5408\u3001\u7d66\u4e0e\u306b\u57fa\u3065\u3044\u3066\u5f93\u696d\u54e1\u3092\u30bd\u30fc\u30c8\u3057\u305f\u3044\u3057\u3001\u4eba\u4e8b\u62c5\u5f53\u8005\u306e\u5834\u5408\u3001\u5e74\u9f62\u306b\u57fa\u3065\u3044\u3066\u30bd\u30fc\u30c8\u3057\u305f\u3044\u3067\u3057\u3087\u3046\u3002\u3053\u308c\u306f\u3001Java\u306eComparator\u30a4\u30f3\u30bf\u30d5\u30a7\u30fc\u30b9\u3092\u4f7f\u7528\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u72b6\u6cc1\u3067\u3059\u3002Comparable.compareTo(Object o)\u30e1\u30bd\u30c3\u30c9\u306e\u5b9f\u88c5\u306f\u30c7\u30d5\u30a9\u30eb\u30c8\u306e\u30bd\u30fc\u30c8\u3092\u63d0\u4f9b\u3057\u307e\u3059\u304c\u3001\u52d5\u7684\u306b\u5909\u66f4\u3059\u308b\u3053\u3068\u306f\u3067\u304d\u307e\u305b\u3093\u3002\u4e00\u65b9\u3001Comparator\u3067\u306f\u3001\u7570\u306a\u308b\u30bd\u30fc\u30c8\u65b9\u6cd5\u3092\u6301\u3064\u8907\u6570\u306e\u30e1\u30bd\u30c3\u30c9\u3092\u5b9a\u7fa9\u3057\u3001\u8981\u4ef6\u306b\u57fa\u3065\u3044\u3066\u30bd\u30fc\u30c8\u65b9\u6cd5\u3092\u9078\u629e\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n
Java \u306e Comparator<\/h2>\n
\u300cComparator\u300d\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306e\u300ccompare(Object o1, Object o2)\u300d\u30e1\u30bd\u30c3\u30c9\u306f\u30012\u3064\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u5f15\u6570\u3092\u53d6\u308b\u3088\u3046\u306b\u5b9f\u88c5\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u308c\u306f\u3001\u6700\u521d\u306e\u5f15\u6570\u304c2\u756a\u76ee\u306e\u5f15\u6570\u3088\u308a\u5c0f\u3055\u3044\u5834\u5408\u306b\u8ca0\u306e\u6574\u6570\u3092\u8fd4\u3057\u3001\u7b49\u3057\u3044\u5834\u5408\u306b\u306f\u30bc\u30ed\u3092\u8fd4\u3057\u3001\u6700\u521d\u306e\u5f15\u6570\u304c2\u756a\u76ee\u306e\u5f15\u6570\u3088\u308a\u3082\u5927\u304d\u3044\u5834\u5408\u306b\u306f\u6b63\u306e\u6574\u6570\u3092\u8fd4\u3059\u3088\u3046\u306b\u5b9f\u88c5\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002 \u300cComparable\u300d\u3068\u300cComparator\u300d\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306f\u3001\u30b3\u30f3\u30d1\u30a4\u30eb\u6642\u306e\u578b\u30c1\u30a7\u30c3\u30af\u306e\u305f\u3081\u306b\u30b8\u30a7\u30cd\u30ea\u30c3\u30af\u30b9\u3092\u4f7f\u7528\u3057\u3066\u304a\u308a\u3001Java\u306e\u30b8\u30a7\u30cd\u30ea\u30af\u30b9\u306b\u3064\u3044\u3066\u8a73\u3057\u304f\u5b66\u3076\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u3069\u306e\u3088\u3046\u306b\u3057\u3066\u300cEmployee\u300d\u30af\u30e9\u30b9\u3067\u7570\u306a\u308b\u300cComparator\u300d\u306e\u5b9f\u88c5\u3092\u4f5c\u6210\u3059\u308b\u304b\u306f\u3001\u4ee5\u4e0b\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/p>\n
\/**\r\n * Comparator to sort employees list or array in order of Salary\r\n *\/\r\n public static Comparator<Employee> SalaryComparator = new Comparator<Employee>() {\r\n\r\n @Override\r\n public int compare(Employee e1, Employee e2) {\r\n return (int) (e1.getSalary() - e2.getSalary());\r\n }\r\n };\r\n\r\n \/**\r\n * Comparator to sort employees list or array in order of Age\r\n *\/\r\n public static Comparator<Employee> AgeComparator = new Comparator<Employee>() {\r\n\r\n @Override\r\n public int compare(Employee e1, Employee e2) {\r\n return e1.getAge() - e2.getAge();\r\n }\r\n };\r\n\r\n \/**\r\n * Comparator to sort employees list or array in order of Name\r\n *\/\r\n public static Comparator<Employee> NameComparator = new Comparator<Employee>() {\r\n\r\n @Override\r\n public int compare(Employee e1, Employee e2) {\r\n return e1.getName().compareTo(e2.getName());\r\n }\r\n };\r\n<\/code><\/pre>\n\u4e0a\u8a18\u306e\u3059\u3079\u3066\u306eComparator\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306e\u5b9f\u88c5\u306f\u3001\u533f\u540d\u30af\u30e9\u30b9\u3067\u3059\u3002\u3053\u308c\u3089\u306e\u6bd4\u8f03\u5668\u3092Arrays\u3068Collections\u30af\u30e9\u30b9\u306e\u30bd\u30fc\u30c8\u95a2\u6570\u306b\u5f15\u6570\u3068\u3057\u3066\u6e21\u3059\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n
\/\/sort employees array using Comparator by Salary\r\nArrays.sort(empArr, Employee.SalaryComparator);\r\nSystem.out.println(\"Employees list sorted by Salary:\\n\"+Arrays.toString(empArr));\r\n\r\n\/\/sort employees array using Comparator by Age\r\nArrays.sort(empArr, Employee.AgeComparator);\r\nSystem.out.println(\"Employees list sorted by Age:\\n\"+Arrays.toString(empArr));\r\n\r\n\/\/sort employees array using Comparator by Name\r\nArrays.sort(empArr, Employee.NameComparator);\r\nSystem.out.println(\"Employees list sorted by Name:\\n\"+Arrays.toString(empArr));\r\n<\/code><\/pre>\n\u4e0a\u8a18\u306e\u30b3\u30fc\u30c9\u30b9\u30cb\u30da\u30c3\u30c8\u306e\u51fa\u529b\u306f\u3001\u3053\u3061\u3089\u3067\u3059\u3002<\/p>\n
Employees list sorted by Salary:\r\n[[id=5, name=Lisa, age=35, salary=5000], [id=10, name=Mikey, age=25, salary=10000], [id=20, name=Arun, age=29, salary=20000], [id=1, name=Pankaj, age=32, salary=50000]]\r\nEmployees list sorted by Age:\r\n[[id=10, name=Mikey, age=25, salary=10000], [id=20, name=Arun, age=29, salary=20000], [id=1, name=Pankaj, age=32, salary=50000], [id=5, name=Lisa, age=35, salary=5000]]\r\nEmployees list sorted by Name:\r\n[[id=20, name=Arun, age=29, salary=20000], [id=5, name=Lisa, age=35, salary=5000], [id=10, name=Mikey, age=25, salary=10000], [id=1, name=Pankaj, age=32, salary=50000]]\r\n<\/code><\/pre>\n\u3060\u304b\u3089\u3001\u4eca\u3067\u306fJava\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u914d\u5217\u3084\u30ea\u30b9\u30c8\u3092\u30bd\u30fc\u30c8\u3057\u305f\u3044\u5834\u5408\u3001\u30c7\u30d5\u30a9\u30eb\u30c8\u306e\u30bd\u30fc\u30c8\u3092\u63d0\u4f9b\u3059\u308b\u305f\u3081\u306bJava\u306eComparable\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092\u5b9f\u88c5\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u3053\u3068\u304c\u308f\u304b\u308a\u307e\u3057\u305f\u3002\u307e\u305f\u3001\u7570\u306a\u308b\u30bd\u30fc\u30c8\u65b9\u6cd5\u3092\u63d0\u4f9b\u3059\u308b\u305f\u3081\u306bJava\u306eComparator\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3082\u5b9f\u88c5\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u3055\u3089\u306b\u3001Comparator\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092\u5b9f\u88c5\u3057\u305f\u5225\u306e\u30af\u30e9\u30b9\u3092\u4f5c\u6210\u3057\u3066\u4f7f\u7528\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002\u4ee5\u4e0b\u306b\u3001Java\u306b\u304a\u3051\u308bComparable\u3068Comparator\u3092\u8aac\u660e\u3059\u308b\u6700\u7d42\u7684\u306a\u30af\u30e9\u30b9\u3092\u793a\u3057\u307e\u3059\u3002<\/p>\n
package com.scdev.sort;\r\n\r\nimport java.util.Comparator;\r\n\r\npublic class Employee implements Comparable<Employee> {\r\n\r\n private int id;\r\n private String name;\r\n private int age;\r\n private long salary;\r\n\r\n public int getId() {\r\n return id;\r\n }\r\n\r\n public String getName() {\r\n return name;\r\n }\r\n\r\n public int getAge() {\r\n return age;\r\n }\r\n\r\n public long getSalary() {\r\n return salary;\r\n }\r\n\r\n public Employee(int id, String name, int age, int salary) {\r\n this.id = id;\r\n this.name = name;\r\n this.age = age;\r\n this.salary = salary;\r\n }\r\n\r\n @Override\r\n public int compareTo(Employee emp) {\r\n \/\/let's sort the employee based on an id in ascending order\r\n \/\/returns a negative integer, zero, or a positive integer as this employee id\r\n \/\/is less than, equal to, or greater than the specified object.\r\n return (this.id - emp.id);\r\n }\r\n\r\n @Override\r\n \/\/this is required to print the user-friendly information about the Employee\r\n public String toString() {\r\n return \"[id=\" + this.id + \", name=\" + this.name + \", age=\" + this.age + \", salary=\" +\r\n this.salary + \"]\";\r\n }\r\n\r\n \/**\r\n * Comparator to sort employees list or array in order of Salary\r\n *\/\r\n public static Comparator<Employee> SalaryComparator = new Comparator<Employee>() {\r\n\r\n @Override\r\n public int compare(Employee e1, Employee e2) {\r\n return (int) (e1.getSalary() - e2.getSalary());\r\n }\r\n };\r\n\r\n \/**\r\n * Comparator to sort employees list or array in order of Age\r\n *\/\r\n public static Comparator<Employee> AgeComparator = new Comparator<Employee>() {\r\n\r\n @Override\r\n public int compare(Employee e1, Employee e2) {\r\n return e1.getAge() - e2.getAge();\r\n }\r\n };\r\n\r\n \/**\r\n * Comparator to sort employees list or array in order of Name\r\n *\/\r\n public static Comparator<Employee> NameComparator = new Comparator<Employee>() {\r\n\r\n @Override\r\n public int compare(Employee e1, Employee e2) {\r\n return e1.getName().compareTo(e2.getName());\r\n }\r\n };\r\n}\r\n<\/code><\/pre>\n\u4ee5\u4e0b\u306f\u3001Comparator\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306e\u5225\u306e\u30af\u30e9\u30b9\u5b9f\u88c5\u3067\u3059\u3002\u3053\u306e\u5b9f\u88c5\u3067\u306f\u3001Employee\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306eid\u3092\u6bd4\u8f03\u3057\u3001\u305d\u308c\u304c\u540c\u3058\u5834\u5408\u306b\u306fname\u306b\u3088\u3063\u3066\u6bd4\u8f03\u3057\u307e\u3059\u3002<\/p>\n
package com.scdev.sort;\r\n\r\nimport java.util.Comparator;\r\n\r\npublic class EmployeeComparatorByIdAndName implements Comparator<Employee> {\r\n\r\n @Override\r\n public int compare(Employee o1, Employee o2) {\r\n int flag = o1.getId() - o2.getId();\r\n if(flag==0) flag = o1.getName().compareTo(o2.getName());\r\n return flag;\r\n }\r\n\r\n}\r\n<\/code><\/pre>\nJava\u3092\u4f7f\u7528\u3057\u3066\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u6bd4\u8f03\u3059\u308b\u3055\u307e\u3056\u307e\u306a\u65b9\u6cd5\u3092\u4f7f\u7528\u3057\u3066\u3001\u30c6\u30b9\u30c8\u30af\u30e9\u30b9\u3092\u4ee5\u4e0b\u306b\u793a\u3057\u307e\u3059\u3002Comparable\u3068Comparator\u3092\u4f7f\u7528\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n
package com.scdev.sort;\r\n\r\nimport java.util.Arrays;\r\n\r\npublic class JavaObjectSorting {\r\n\r\n \/**\r\n * This class shows how to sort custom objects array\/list\r\n * implementing Comparable and Comparator interfaces\r\n * @param args\r\n *\/\r\n public static void main(String[] args) {\r\n\r\n \/\/sorting custom object array\r\n Employee[] empArr = new Employee[4];\r\n empArr[0] = new Employee(10, \"Mikey\", 25, 10000);\r\n empArr[1] = new Employee(20, \"Arun\", 29, 20000);\r\n empArr[2] = new Employee(5, \"Lisa\", 35, 5000);\r\n empArr[3] = new Employee(1, \"Pankaj\", 32, 50000);\r\n \r\n \/\/sorting employees array using Comparable interface implementation\r\n Arrays.sort(empArr);\r\n System.out.println(\"Default Sorting of Employees list:\\n\"+Arrays.toString(empArr));\r\n \r\n \/\/sort employees array using Comparator by Salary\r\n Arrays.sort(empArr, Employee.SalaryComparator);\r\n System.out.println(\"Employees list sorted by Salary:\\n\"+Arrays.toString(empArr));\r\n \r\n \/\/sort employees array using Comparator by Age\r\n Arrays.sort(empArr, Employee.AgeComparator);\r\n System.out.println(\"Employees list sorted by Age:\\n\"+Arrays.toString(empArr));\r\n \r\n \/\/sort employees array using Comparator by Name\r\n Arrays.sort(empArr, Employee.NameComparator);\r\n System.out.println(\"Employees list sorted by Name:\\n\"+Arrays.toString(empArr));\r\n \r\n \/\/Employees list sorted by ID and then name using Comparator class\r\n empArr[0] = new Employee(1, \"Mikey\", 25, 10000);\r\n Arrays.sort(empArr, new EmployeeComparatorByIdAndName());\r\n System.out.println(\"Employees list sorted by ID and Name:\\n\"+Arrays.toString(empArr));\r\n }\r\n\r\n}\r\n<\/code><\/pre>\n\u4e0a\u8a18\u306e\u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u51fa\u529b\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059\u3002<\/p>\n
Default Sorting of Employees list:\r\n[[id=1, name=Pankaj, age=32, salary=50000], [id=5, name=Lisa, age=35, salary=5000], [id=10, name=Mikey, age=25, salary=10000], [id=20, name=Arun, age=29, salary=20000]]\r\nEmployees list sorted by Salary:\r\n[[id=5, name=Lisa, age=35, salary=5000], [id=10, name=Mikey, age=25, salary=10000], [id=20, name=Arun, age=29, salary=20000], [id=1, name=Pankaj, age=32, salary=50000]]\r\nEmployees list sorted by Age:\r\n[[id=10, name=Mikey, age=25, salary=10000], [id=20, name=Arun, age=29, salary=20000], [id=1, name=Pankaj, age=32, salary=50000], [id=5, name=Lisa, age=35, salary=5000]]\r\nEmployees list sorted by Name:\r\n[[id=20, name=Arun, age=29, salary=20000], [id=5, name=Lisa, age=35, salary=5000], [id=10, name=Mikey, age=25, salary=10000], [id=1, name=Pankaj, age=32, salary=50000]]\r\nEmployees list sorted by ID and Name:\r\n[[id=1, name=Mikey, age=25, salary=10000], [id=1, name=Pankaj, age=32, salary=50000], [id=5, name=Lisa, age=35, salary=5000], [id=10, name=Mikey, age=25, salary=10000]]\r\n<\/code><\/pre>\njava.lang.Comparable\u3068java.util.Comparator\u306f\u3001Java\u3067\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u30bd\u30fc\u30c8\u3092\u63d0\u4f9b\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3067\u304d\u308b\u5f37\u529b\u306a\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3067\u3059\u3002<\/p>\n
\u6bd4\u8f03\u53ef\u80fd\u6027 vs \u6bd4\u8f03\u5668<\/h2>\n\n- \n
Comparable\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306f\u3001\u5358\u4e00\u306e\u30bd\u30fc\u30c8\u65b9\u6cd5\u3092\u63d0\u4f9b\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u3001Comparator\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306f\u7570\u306a\u308b\u30bd\u30fc\u30c8\u65b9\u6cd5\u3092\u63d0\u4f9b\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002<\/ol>\n<\/li>\n<\/ol>\n <\/p>\n
\n- \n
Comparable\u3092\u4f7f\u7528\u3059\u308b\u306b\u306f\u3001\u30af\u30e9\u30b9\u306f\u305d\u308c\u3092\u5b9f\u88c5\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u304c\u3001Comparator\u3092\u4f7f\u7528\u3059\u308b\u5834\u5408\u306f\u30af\u30e9\u30b9\u306b\u5909\u66f4\u3092\u52a0\u3048\u308b\u5fc5\u8981\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/ol>\n<\/li>\n<\/ol>\n <\/p>\n
\n- \n
Comparable\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306fjava.lang\u30d1\u30c3\u30b1\u30fc\u30b8\u306b\u3042\u308a\u3001Comparator\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306fjava.util\u30d1\u30c3\u30b1\u30fc\u30b8\u306b\u5b58\u5728\u3057\u307e\u3059\u3002<\/ol>\n<\/li>\n<\/ol>\n <\/p>\n
Comparable\u3092\u4f7f\u7528\u3059\u308b\u5834\u5408\u3001\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u5074\u3067\u306e\u30b3\u30fc\u30c9\u5909\u66f4\u306f\u5fc5\u8981\u3042\u308a\u307e\u305b\u3093\u3002Arrays.sort()\u3084Collection.sort()\u30e1\u30bd\u30c3\u30c9\u306f\u3001\u81ea\u52d5\u7684\u306b\u30af\u30e9\u30b9\u306ecompareTo()\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002Comparator\u3092\u4f7f\u7528\u3059\u308b\u5834\u5408\u3001\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306fcompare()\u30e1\u30bd\u30c3\u30c9\u3067\u4f7f\u7528\u3059\u308bComparator\u30af\u30e9\u30b9\u3092\u63d0\u4f9b\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/ol>\nComparator\u5f15\u6570\u3092\u53d7\u3051\u53d6\u308bCollections.sort()\u30e1\u30bd\u30c3\u30c9\u304c\u30b9\u30c8\u30e9\u30c6\u30b8\u30fc\u30d1\u30bf\u30fc\u30f3\u306b\u5f93\u3063\u3066\u3044\u308b\u3053\u3068\u3092\u77e5\u3063\u3066\u3044\u307e\u3059\u304b\uff1f<\/p>\n
\u5f0a\u793e\u306eGitHub\u30ea\u30dd\u30b8\u30c8\u30ea\u304b\u3089\u3001\u5b8c\u5168\u306a\u30b3\u30fc\u30c9\u3084\u3055\u3089\u306b\u591a\u304f\u306eJava\u306e\u30b3\u30a2\u4f8b\u3092\u78ba\u8a8d\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
Java\u306b\u304a\u3044\u3066\u3001Comparable\u3068Comparator\u306f\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u30b3\u30ec\u30af\u30b7\u30e7\u30f3\u3092\u30bd\u30fc\u30c8\u3059\u308b\u969b\u306b\u975e\u5e38\u306b\u4fbf\u5229\u3067\u3059\u3002Java\u306f\u3001\u30d7\u30ea\u30df\u30c6\u30a3\u30d6\u578b\u306e\u914d\u5217\u3084\u30e9\u30c3\u30d1\u30fc\u30af\u30e9\u30b9\u306e\u914d\u5217\u3001\u30ea\u30b9\u30c8\u3092\u30bd\u30fc\u30c8\u3059\u308b\u305f\u3081\u306e\u7d44\u307f\u8fbc\u307f\u30e1\u30bd\u30c3\u30c9\u3092\u63d0 […]<\/p>\n","protected":false},"author":8,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[26,61],"class_list":["post-854","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-26","tag-61"],"yoast_head":"\n
Java\u306b\u304a\u3051\u308bComparable\u3068Comparator\u306e\u4f8b\u3092\u6bd4\u8f03\u3057\u3066\u304f\u3060\u3055\u3044\u3002 - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"Java\u306b\u304a\u3051\u308bComparable\u3068Comparator\u306e\u4f8b\u3092\u6bd4\u8f03\u3057\u3066\u304f\u3060\u3055\u3044\u3092\u5206\u304b\u308a\u3084\u3059\u304f\u89e3\u8aac\u3002\u5b9f\u8df5\u7684\u306a\u4f8b\u3068\u30b3\u30fc\u30c9\u3001\u6ce8\u610f\u70b9\u3092\u542b\u3081\u3066\u521d\u5fc3\u8005\u306b\u3082\u7406\u89e3\u3067\u304d\u308b\u3088\u3046\u8aac\u660e\u3057\u307e\u3059\u3002\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/ja\/blog\/java\u306b\u304a\u3051\u308bcomparable\u3068comparator\u306e\u4f8b\u3092\u6bd4\u8f03\u3057\u3066\u304f\u3060\u3055\u3044\u3002\/\" \/>\n<meta property=\"og:locale\" content=\"ja_JP\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Java\u306b\u304a\u3051\u308bComparable\u3068Comparator\u306e\u4f8b\u3092\u6bd4\u8f03\u3057\u3066\u304f\u3060\u3055\u3044\u3002\" \/>\n<meta property=\"og:description\" content=\"Java\u306b\u304a\u3051\u308bComparable\u3068Comparator\u306e\u4f8b\u3092\u6bd4\u8f03\u3057\u3066\u304f\u3060\u3055\u3044\u3092\u5206\u304b\u308a\u3084\u3059\u304f\u89e3\u8aac\u3002\u5b9f\u8df5\u7684\u306a\u4f8b\u3068\u30b3\u30fc\u30c9\u3001\u6ce8\u610f\u70b9\u3092\u542b\u3081\u3066\u521d\u5fc3\u8005\u306b\u3082\u7406\u89e3\u3067\u304d\u308b\u3088\u3046\u8aac\u660e\u3057\u307e\u3059\u3002\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/ja\/blog\/java\u306b\u304a\u3051\u308bcomparable\u3068comparator\u306e\u4f8b\u3092\u6bd4\u8f03\u3057\u3066\u304f\u3060\u3055\u3044\u3002\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - Silicon Cloud\" \/>\n<meta property=\"article:published_time\" content=\"2022-07-27T10:50:45+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-07-31T18:02:31+00:00\" \/>\n<meta name=\"author\" content=\"\u84ee, \u7ffc\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u57f7\u7b46\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"\u84ee, \u7ffc\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u63a8\u5b9a\u8aad\u307f\u53d6\u308a\u6642\u9593\" \/>\n\t<meta name=\"twitter:data2\" content=\"30\u5206\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.silicloud.com\/ja\/blog\/java%e3%81%ab%e3%81%8a%e3%81%91%e3%82%8bcomparable%e3%81%a8comparator%e3%81%ae%e4%be%8b%e3%82%92%e6%af%94%e8%bc%83%e3%81%97%e3%81%a6%e3%81%8f%e3%81%a0%e3%81%95%e3%81%84%e3%80%82\/\",\"url\":\"https:\/\/www.silicloud.com\/ja\/blog\/java%e3%81%ab%e3%81%8a%e3%81%91%e3%82%8bcomparable%e3%81%a8comparator%e3%81%ae%e4%be%8b%e3%82%92%e6%af%94%e8%bc%83%e3%81%97%e3%81%a6%e3%81%8f%e3%81%a0%e3%81%95%e3%81%84%e3%80%82\/\",\"name\":\"Java\u306b\u304a\u3051\u308bComparable\u3068Comparator\u306e\u4f8b\u3092\u6bd4\u8f03\u3057\u3066\u304f\u3060\u3055\u3044\u3002 - Blog - Silicon Cloud\",\"isPartOf\":{\"@id\":\"https:\/\/www.silicloud.com\/ja\/blog\/#website\"},\"datePublished\":\"2022-07-27T10:50:45+00:00\",\"dateModified\":\"2025-07-31T18:02:31+00:00\",\"author\":{\"@id\":\"https:\/\/www.silicloud.com\/ja\/blog\/#\/schema\/person\/cdc124a0aaebf26393d8d591183ca413\"},\"description\":\"Java\u306b\u304a\u3051\u308bComparable\u3068Comparator\u306e\u4f8b\u3092\u6bd4\u8f03\u3057\u3066\u304f\u3060\u3055\u3044\u3092\u5206\u304b\u308a\u3084\u3059\u304f\u89e3\u8aac\u3002\u5b9f\u8df5\u7684\u306a\u4f8b\u3068\u30b3\u30fc\u30c9\u3001\u6ce8\u610f\u70b9\u3092\u542b\u3081\u3066\u521d\u5fc3\u8005\u306b\u3082\u7406\u89e3\u3067\u304d\u308b\u3088\u3046\u8aac\u660e\u3057\u307e\u3059\u3002\",\"breadcrumb\":{\"@id\":\"https:\/\/www.silicloud.com\/ja\/blog\/java%e3%81%ab%e3%81%8a%e3%81%91%e3%82%8bcomparable%e3%81%a8comparator%e3%81%ae%e4%be%8b%e3%82%92%e6%af%94%e8%bc%83%e3%81%97%e3%81%a6%e3%81%8f%e3%81%a0%e3%81%95%e3%81%84%e3%80%82\/#breadcrumb\"},\"inLanguage\":\"ja\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.silicloud.com\/ja\/blog\/java%e3%81%ab%e3%81%8a%e3%81%91%e3%82%8bcomparable%e3%81%a8comparator%e3%81%ae%e4%be%8b%e3%82%92%e6%af%94%e8%bc%83%e3%81%97%e3%81%a6%e3%81%8f%e3%81%a0%e3%81%95%e3%81%84%e3%80%82\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.silicloud.com\/ja\/blog\/java%e3%81%ab%e3%81%8a%e3%81%91%e3%82%8bcomparable%e3%81%a8comparator%e3%81%ae%e4%be%8b%e3%82%92%e6%af%94%e8%bc%83%e3%81%97%e3%81%a6%e3%81%8f%e3%81%a0%e3%81%95%e3%81%84%e3%80%82\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"\u9996\u9875\",\"item\":\"https:\/\/www.silicloud.com\/ja\/blog\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Java\u306b\u304a\u3051\u308bComparable\u3068Comparator\u306e\u4f8b\u3092\u6bd4\u8f03\u3057\u3066\u304f\u3060\u3055\u3044\u3002\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.silicloud.com\/ja\/blog\/#website\",\"url\":\"https:\/\/www.silicloud.com\/ja\/blog\/\",\"name\":\"Blog - Silicon Cloud\",\"description\":\"\",\"inLanguage\":\"ja\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/www.silicloud.com\/ja\/blog\/#\/schema\/person\/cdc124a0aaebf26393d8d591183ca413\",\"name\":\"\u84ee, \u7ffc\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"ja\",\"@id\":\"https:\/\/www.silicloud.com\/ja\/blog\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/27308f733c7fcdac8617926a0100c77213339c4e501310a08c0baf946bf823bc?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/27308f733c7fcdac8617926a0100c77213339c4e501310a08c0baf946bf823bc?s=96&d=mm&r=g\",\"caption\":\"\u84ee, \u7ffc\"},\"url\":\"https:\/\/www.silicloud.com\/ja\/blog\/author\/rentsubasa\/\"},{\"@type\":\"ImageObject\",\"inLanguage\":\"ja\",\"@id\":\"https:\/\/www.silicloud.com\/ja\/blog\/java%e3%81%ab%e3%81%8a%e3%81%91%e3%82%8bcomparable%e3%81%a8comparator%e3%81%ae%e4%be%8b%e3%82%92%e6%af%94%e8%bc%83%e3%81%97%e3%81%a6%e3%81%8f%e3%81%a0%e3%81%95%e3%81%84%e3%80%82\/#local-main-organization-logo\",\"url\":\"\",\"contentUrl\":\"\",\"caption\":\"Blog - Silicon Cloud\"}]}<\/script>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"Java\u306b\u304a\u3051\u308bComparable\u3068Comparator\u306e\u4f8b\u3092\u6bd4\u8f03\u3057\u3066\u304f\u3060\u3055\u3044\u3002 - Blog - Silicon Cloud","description":"Java\u306b\u304a\u3051\u308bComparable\u3068Comparator\u306e\u4f8b\u3092\u6bd4\u8f03\u3057\u3066\u304f\u3060\u3055\u3044\u3092\u5206\u304b\u308a\u3084\u3059\u304f\u89e3\u8aac\u3002\u5b9f\u8df5\u7684\u306a\u4f8b\u3068\u30b3\u30fc\u30c9\u3001\u6ce8\u610f\u70b9\u3092\u542b\u3081\u3066\u521d\u5fc3\u8005\u306b\u3082\u7406\u89e3\u3067\u304d\u308b\u3088\u3046\u8aac\u660e\u3057\u307e\u3059\u3002","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.silicloud.com\/ja\/blog\/java\u306b\u304a\u3051\u308bcomparable\u3068comparator\u306e\u4f8b\u3092\u6bd4\u8f03\u3057\u3066\u304f\u3060\u3055\u3044\u3002\/","og_locale":"ja_JP","og_type":"article","og_title":"Java\u306b\u304a\u3051\u308bComparable\u3068Comparator\u306e\u4f8b\u3092\u6bd4\u8f03\u3057\u3066\u304f\u3060\u3055\u3044\u3002","og_description":"Java\u306b\u304a\u3051\u308bComparable\u3068Comparator\u306e\u4f8b\u3092\u6bd4\u8f03\u3057\u3066\u304f\u3060\u3055\u3044\u3092\u5206\u304b\u308a\u3084\u3059\u304f\u89e3\u8aac\u3002\u5b9f\u8df5\u7684\u306a\u4f8b\u3068\u30b3\u30fc\u30c9\u3001\u6ce8\u610f\u70b9\u3092\u542b\u3081\u3066\u521d\u5fc3\u8005\u306b\u3082\u7406\u89e3\u3067\u304d\u308b\u3088\u3046\u8aac\u660e\u3057\u307e\u3059\u3002","og_url":"https:\/\/www.silicloud.com\/ja\/blog\/java\u306b\u304a\u3051\u308bcomparable\u3068comparator\u306e\u4f8b\u3092\u6bd4\u8f03\u3057\u3066\u304f\u3060\u3055\u3044\u3002\/","og_site_name":"Blog - Silicon Cloud","article_published_time":"2022-07-27T10:50:45+00:00","article_modified_time":"2025-07-31T18:02:31+00:00","author":"\u84ee, \u7ffc","twitter_card":"summary_large_image","twitter_misc":{"\u57f7\u7b46\u8005":"\u84ee, \u7ffc","\u63a8\u5b9a\u8aad\u307f\u53d6\u308a\u6642\u9593":"30\u5206"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/www.silicloud.com\/ja\/blog\/java%e3%81%ab%e3%81%8a%e3%81%91%e3%82%8bcomparable%e3%81%a8comparator%e3%81%ae%e4%be%8b%e3%82%92%e6%af%94%e8%bc%83%e3%81%97%e3%81%a6%e3%81%8f%e3%81%a0%e3%81%95%e3%81%84%e3%80%82\/","url":"https:\/\/www.silicloud.com\/ja\/blog\/java%e3%81%ab%e3%81%8a%e3%81%91%e3%82%8bcomparable%e3%81%a8comparator%e3%81%ae%e4%be%8b%e3%82%92%e6%af%94%e8%bc%83%e3%81%97%e3%81%a6%e3%81%8f%e3%81%a0%e3%81%95%e3%81%84%e3%80%82\/","name":"Java\u306b\u304a\u3051\u308bComparable\u3068Comparator\u306e\u4f8b\u3092\u6bd4\u8f03\u3057\u3066\u304f\u3060\u3055\u3044\u3002 - Blog - Silicon Cloud","isPartOf":{"@id":"https:\/\/www.silicloud.com\/ja\/blog\/#website"},"datePublished":"2022-07-27T10:50:45+00:00","dateModified":"2025-07-31T18:02:31+00:00","author":{"@id":"https:\/\/www.silicloud.com\/ja\/blog\/#\/schema\/person\/cdc124a0aaebf26393d8d591183ca413"},"description":"Java\u306b\u304a\u3051\u308bComparable\u3068Comparator\u306e\u4f8b\u3092\u6bd4\u8f03\u3057\u3066\u304f\u3060\u3055\u3044\u3092\u5206\u304b\u308a\u3084\u3059\u304f\u89e3\u8aac\u3002\u5b9f\u8df5\u7684\u306a\u4f8b\u3068\u30b3\u30fc\u30c9\u3001\u6ce8\u610f\u70b9\u3092\u542b\u3081\u3066\u521d\u5fc3\u8005\u306b\u3082\u7406\u89e3\u3067\u304d\u308b\u3088\u3046\u8aac\u660e\u3057\u307e\u3059\u3002","breadcrumb":{"@id":"https:\/\/www.silicloud.com\/ja\/blog\/java%e3%81%ab%e3%81%8a%e3%81%91%e3%82%8bcomparable%e3%81%a8comparator%e3%81%ae%e4%be%8b%e3%82%92%e6%af%94%e8%bc%83%e3%81%97%e3%81%a6%e3%81%8f%e3%81%a0%e3%81%95%e3%81%84%e3%80%82\/#breadcrumb"},"inLanguage":"ja","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.silicloud.com\/ja\/blog\/java%e3%81%ab%e3%81%8a%e3%81%91%e3%82%8bcomparable%e3%81%a8comparator%e3%81%ae%e4%be%8b%e3%82%92%e6%af%94%e8%bc%83%e3%81%97%e3%81%a6%e3%81%8f%e3%81%a0%e3%81%95%e3%81%84%e3%80%82\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/www.silicloud.com\/ja\/blog\/java%e3%81%ab%e3%81%8a%e3%81%91%e3%82%8bcomparable%e3%81%a8comparator%e3%81%ae%e4%be%8b%e3%82%92%e6%af%94%e8%bc%83%e3%81%97%e3%81%a6%e3%81%8f%e3%81%a0%e3%81%95%e3%81%84%e3%80%82\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"\u9996\u9875","item":"https:\/\/www.silicloud.com\/ja\/blog\/"},{"@type":"ListItem","position":2,"name":"Java\u306b\u304a\u3051\u308bComparable\u3068Comparator\u306e\u4f8b\u3092\u6bd4\u8f03\u3057\u3066\u304f\u3060\u3055\u3044\u3002"}]},{"@type":"WebSite","@id":"https:\/\/www.silicloud.com\/ja\/blog\/#website","url":"https:\/\/www.silicloud.com\/ja\/blog\/","name":"Blog - Silicon Cloud","description":"","inLanguage":"ja"},{"@type":"Person","@id":"https:\/\/www.silicloud.com\/ja\/blog\/#\/schema\/person\/cdc124a0aaebf26393d8d591183ca413","name":"\u84ee, \u7ffc","image":{"@type":"ImageObject","inLanguage":"ja","@id":"https:\/\/www.silicloud.com\/ja\/blog\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/27308f733c7fcdac8617926a0100c77213339c4e501310a08c0baf946bf823bc?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/27308f733c7fcdac8617926a0100c77213339c4e501310a08c0baf946bf823bc?s=96&d=mm&r=g","caption":"\u84ee, \u7ffc"},"url":"https:\/\/www.silicloud.com\/ja\/blog\/author\/rentsubasa\/"},{"@type":"ImageObject","inLanguage":"ja","@id":"https:\/\/www.silicloud.com\/ja\/blog\/java%e3%81%ab%e3%81%8a%e3%81%91%e3%82%8bcomparable%e3%81%a8comparator%e3%81%ae%e4%be%8b%e3%82%92%e6%af%94%e8%bc%83%e3%81%97%e3%81%a6%e3%81%8f%e3%81%a0%e3%81%95%e3%81%84%e3%80%82\/#local-main-organization-logo","url":"","contentUrl":"","caption":"Blog - Silicon Cloud"}]}},"_links":{"self":[{"href":"https:\/\/www.silicloud.com\/ja\/blog\/wp-json\/wp\/v2\/posts\/854","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.silicloud.com\/ja\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.silicloud.com\/ja\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.silicloud.com\/ja\/blog\/wp-json\/wp\/v2\/users\/8"}],"replies":[{"embeddable":true,"href":"https:\/\/www.silicloud.com\/ja\/blog\/wp-json\/wp\/v2\/comments?post=854"}],"version-history":[{"count":1,"href":"https:\/\/www.silicloud.com\/ja\/blog\/wp-json\/wp\/v2\/posts\/854\/revisions"}],"predecessor-version":[{"id":45853,"href":"https:\/\/www.silicloud.com\/ja\/blog\/wp-json\/wp\/v2\/posts\/854\/revisions\/45853"}],"wp:attachment":[{"href":"https:\/\/www.silicloud.com\/ja\/blog\/wp-json\/wp\/v2\/media?parent=854"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.silicloud.com\/ja\/blog\/wp-json\/wp\/v2\/categories?post=854"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.silicloud.com\/ja\/blog\/wp-json\/wp\/v2\/tags?post=854"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}