Java Object Arrays: Definition and Usage

In Java, you can define and use object arrays through the following methods:

1. Define an array of objects.

// 定义一个长度为5的Person对象数组
Person[] persons = new Person[5];
// 初始化对象数组
persons[0] = new Person("Alice", 25);
persons[1] = new Person("Bob", 30);
//...

1. Iterate through the array of objects.

for (int i = 0; i < persons.length; i++) {
    System.out.println(persons[i].getName() + " is " + persons[i].getAge() + " years old");
}

1. Methods and properties that use arrays as parameters.

// 获取对象数组中某个对象的属性
String name = persons[0].getName();
int age = persons[0].getAge();

// 调用对象数组中某个对象的方法
persons[0].sayHello();

By using the above methods, you can define and use arrays of objects to manipulate and access objects within the array.