{"id":31082,"date":"2023-10-27T02:04:50","date_gmt":"2023-08-04T03:42:44","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/java-%e8%be%93%e5%87%ba%e6%95%b0%e7%bb%84\/"},"modified":"2025-08-12T22:14:02","modified_gmt":"2025-08-12T14:14:02","slug":"java-%e8%be%93%e5%87%ba%e6%95%b0%e7%bb%84","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/java-%e8%be%93%e5%87%ba%e6%95%b0%e7%bb%84\/","title":{"rendered":"Java \u8f93\u51fa\u6570\u7ec4"},"content":{"rendered":"

Java\u7684\u6570\u7ec4\u9700\u8981\u5728\u6700\u5f00\u59cb\u786e\u5b9a\u8981\u5b58\u50a8\u7684\u5143\u7d20\u6570\u91cf\uff0c\u5e76\u4e14\u4e4b\u540e\u65e0\u6cd5\u66f4\u6539\u5143\u7d20\u6570\u91cf\u3002
\n\u5982\u679c\u60f3\u8981\u589e\u52a0\u5143\u7d20\uff0c\u53ef\u4ee5\u521b\u5efa\u4e00\u4e2a\u66f4\u5927\u5c3a\u5bf8\u7684\u65b0\u6570\u7ec4\u5e76\u5c06\u539f\u59cb\u6570\u636e\u590d\u5236\u5230\u65b0\u6570\u7ec4\u4e2d\uff0c\u6216\u8005\u4f7f\u7528\u4e00\u79cd\u53eb\u505aArrayList\u7684\u5217\u8868\u3002<\/p>\n

ArrayList\u5c31\u50cf\u662f\u4e00\u4e2a\u53ef\u4ee5\u6539\u53d8\u5143\u7d20\u6570\u91cf\u7684\u6570\u7ec4\uff0c\u7ecf\u5e38\u5728Web\u5e94\u7528\u7a0b\u5e8f\u5f00\u53d1\u4e2d\u4f7f\u7528\u3002<\/p>\n

\u8ba9\u6211\u4eec\u5c1d\u8bd5\u4f7f\u7528\u6570\u7ec4\u3002<\/p>\n
class<\/span> Main<\/span> {<\/span>\r\n  public<\/span> static<\/span> void<\/span> main<\/span>(<\/span>String<\/span>[]<\/span> args<\/span>)<\/span> {<\/span>\r\n    int<\/span>[]<\/span> scores<\/span>;<\/span>\r\n    scores<\/span> =<\/span> new<\/span> int<\/span>[<\/span>3<\/span>];<\/span>\r\n\r\n    scores<\/span>[<\/span>0<\/span>]<\/span> =<\/span> 1<\/span>;<\/span>\r\n    scores<\/span>[<\/span>1<\/span>]<\/span> =<\/span> 5<\/span>;<\/span>\r\n    scores<\/span>[<\/span>2<\/span>]<\/span> =<\/span> 10<\/span>;<\/span>\r\n\r\n    System<\/span>.<\/span>out<\/span>.<\/span>println<\/span>(<\/span>scores<\/span>[<\/span>0<\/span>]);<\/span>\r\n    System<\/span>.<\/span>out<\/span>.<\/span>println<\/span>(<\/span>scores<\/span>[<\/span>1<\/span>]);<\/span>\r\n    System<\/span>.<\/span>out<\/span>.<\/span>println<\/span>(<\/span>scores<\/span>[<\/span>2<\/span>]);<\/span>\r\n  }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u7ed3\u679c\u5c06\u6309\u4ee5\u4e0b\u65b9\u5f0f\u663e\u793a\u3002<\/p>\n
1\r\n5\r\n10\r\n<\/code><\/pre>\n
\u8ba9\u6211\u4eec\u6765\u7406\u89e3\u4e00\u4e0b\u6570\u7ec4\u7684\u4f7f\u7528\u65b9\u6cd5\u3002\u2460 \u58f0\u660e\u4e00\u4e2a\u6570\u7ec4
\n\u2461 \u521b\u5efa\u6570\u7ec4\u5143\u7d20\u5e76\u5411\u6570\u7ec4\u4e2d\u8d4b\u503c
\n\u2462 \u7ed9\u6570\u7ec4\u5143\u7d20\u8d4b\u503c<\/p>\n
\u58f0\u660e\u4e00\u4e2a\u6570\u7ec4
\n\u58f0\u660e\u65b9\u6cd5\u5982\u4e0b\u3002<\/p>\n
int<\/span>[]<\/span> scores<\/span>;<\/span>\r\n<\/code><\/pre>\n
\u5728\u524d\u9762\u7684\u7ae0\u8282\u4e2d\uff0c\u6211\u4eec\u5b66\u4e60\u5230\u5f53\u58f0\u660e\u6574\u6570\u7c7b\u578b\u7684\u53d8\u91cf\u65f6\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u7c7b\u4f3c\u4e8e”int score;”\u7684\u8bed\u6cd5\u3002<\/p>\n
\u4e0e\u6b64\u76f8\u540c\uff0c\u58f0\u660e\u5b58\u50a8int\u7c7b\u578b\u6574\u6570\u7684\u6570\u7ec4\u53ef\u4ee5\u5199\u4f5cint[] scores;\u3002<\/p>\n
\u5728\u8fd9\u91cc\uff0c\u201cint\u201d\u662f\u7528\u6765\u6307\u5b9a\u8981\u4f5c\u4e3a\u5143\u7d20\u5b58\u50a8\u7684\u6570\u636e\u7c7b\u578b\u7684\uff0c\u4f8b\u5982\uff0c\u5982\u679c\u8981\u5b58\u50a8\u957f\u6574\u578b\u7684\u6570\u7ec4\uff0c\u5c31\u4f1a\u58f0\u660e\u4e3along[] scores;\u3002<\/p>\n
\u6211\u521a\u521a\u6267\u884c\u4e86\u4ee5\u4e0b\u4ee3\u7801\uff1a
\n\u521b\u5efa\u6570\u7ec4\u5143\u7d20\u5e76\u5c06\u5176\u5206\u914d\u7ed9\u6570\u7ec4\u3002<\/p>\n
scores<\/span> =<\/span> new<\/span> int<\/span>[<\/span>3<\/span>];<\/span>\r\n<\/code><\/pre>\n
\u53f3\u4fa7\u90e8\u5206\u7684new int[3];\u8868\u793a\u521b\u5efa\u4e86\u4e09\u4e2a\u6574\u578b\u5143\u7d20\u3002<\/p>\n
\u5c06\u503c\u8d4b\u7ed9\u6570\u7ec4\u7684\u5143\u7d20\u3002<\/p>\n
scores<\/span>[<\/span>0<\/span>]<\/span> =<\/span> 1<\/span>;<\/span>\r\n<\/code><\/pre>\n
\u6211\u5728\u914d\u5217scores\u7684\u7b2c\u4e00\u4e2a\u5143\u7d20\u4e2d\u8d4b\u503c\u4e3a”1″\u3002
\n\u5c06”0″\u6307\u5b9a\u4e3a\u8868\u793a\u7b2c\u4e00\u4e2a\u7d22\u5f15\u7684\u7d22\u5f15\u3002
\n\u53e6\u5916\uff0c\u5f53\u4f60\u63d0\u53d6\u6570\u7ec4\u5143\u7d20\u65f6\uff0c\u53ef\u4ee5\u6309\u4ee5\u4e0b\u65b9\u5f0f\u8fdb\u884c\u3002<\/p>\n
scores<\/span>[<\/span>0<\/span>]<\/span>\r\n<\/code><\/pre>\n
\u7406\u89e3\u4e0d\u540c\u7684\u6570\u7ec4\u63cf\u8ff0\u65b9\u6cd5\u5728\u7533\u660e\u6570\u7ec4\u7684\u540c\u65f6\uff0c\u4e5f\u53ef\u4ee5\u521b\u5efa\u5143\u7d20\u7684\u65b9\u6cd5\u3002\u5728\u5148\u524d\u6267\u884c\u7684\u4ee3\u7801\u4e2d\uff0c\u914d\u5217\u7684\u7533\u660e\u548c\u5143\u7d20\u7684\u521b\u5efa\u662f\u5206\u5f00\u8fdb\u884c\u7684\u3002<\/p>\n
int<\/span>[]<\/span> scores<\/span>;<\/span>\r\nscores<\/span> =<\/span> new<\/span> int<\/span>[<\/span>3<\/span>];<\/span>\r\n<\/code><\/pre>\n
\u4e5f\u53ef\u4ee5\u7528\u4e00\u884c\u6765\u63cf\u8ff0\u5982\u4e0b\u7684\u5185\u5bb9\u3002<\/p>\n
int<\/span>[]<\/span> scores<\/span> =<\/span> new<\/span> int<\/span>[<\/span>3<\/span>];<\/span>\r\n<\/code><\/pre>\n
\u5728\u58f0\u660e\u6570\u7ec4\u65f6\u53ef\u4ee5\u4f7f\u7528\u7c7b\u578b\u63a8\u65ad\u7684\u65b9\u6cd5\uff0c\u6570\u7ec4\u4e5f\u53ef\u4ee5\u4f7f\u7528\u7c7b\u578b\u63a8\u65ad\u3002<\/p>\n
var<\/span> scores<\/span> =<\/span> new<\/span> int<\/span>[<\/span>3<\/span>];<\/span>\r\n<\/code><\/pre>\n
\u53ea\u9700\u4e00\u79cd\u9009\u62e9\uff1a\u901a\u8fc7\u5206\u914d\u4e09\u4e2a int \u7c7b\u578b\u7684\u5143\u7d20\uff0c\u53ef\u4ee5\u63a8\u65ad\u51fa scores \u662f\u4e00\u4e2a\u7528\u4e8e\u5b58\u50a8\u5b83\u4eec\u7684\u6570\u7ec4\u3002<\/p>\n
\u5982\u679c\u5728\u58f0\u660e\u6570\u7ec4\u65f6\u5206\u914d\u7684\u503c\u5df2\u7ecf\u786e\u5b9a\uff0c\u53ef\u4ee5\u7701\u7565\u5982\u4e0b\u6240\u793a\u7684\u8d4b\u503c\u8fc7\u7a0b\uff0c\u540c\u65f6\u8fdb\u884c\u58f0\u660e\u548c\u8d4b\u503c\u3002<\/p>\n
int<\/span>[]<\/span> scores<\/span> =<\/span> {<\/span>1<\/span>,<\/span> 5<\/span>,<\/span> 10<\/span>};<\/span>\r\n<\/code><\/pre>\n
\u7406\u89e3\u5217\u8868
\n\u8ba9\u6211\u4eec\u4e86\u89e3\u4e00\u4e0bArrayList
\nArrayList\u662f\u4e00\u79cd\u4f7f\u7528\u53ef\u53d8\u957f\u5ea6\u6570\u7ec4\u7684\u673a\u5236\u3002\u53ef\u53d8\u957f\u5ea6\u6570\u7ec4\u53ef\u4ee5\u968f\u610f\u6539\u53d8\u5176\u957f\u5ea6\uff08\u5143\u7d20\u6570\u91cf\uff09\u3002<\/p>\n
\u7531\u4e8eRuby\u7684\u6570\u7ec4\u662f\u53ef\u53d8\u957f\u5ea6\u7684\uff0c\u6240\u4ee5\u4e0eJava\u7684\u6570\u7ec4\u76f8\u6bd4\uff0cArrayList\u7684\u6027\u8d28\u548c\u7528\u6cd5\u66f4\u4e3a\u63a5\u8fd1\u3002<\/p>\n
import<\/span> java.util.ArrayList<\/span>;<\/span>\r\n\r\nclass<\/span> Main<\/span> {<\/span>\r\n  public<\/span> static<\/span> void<\/span> main<\/span>(<\/span>String<\/span>[]<\/span> args<\/span>)<\/span> {<\/span>\r\n    ArrayList<\/span><<\/span>Integer<\/span>><\/span> scores<\/span> =<\/span> new<\/span> ArrayList<\/span><<\/span>Integer<\/span>>();<\/span>\r\n\r\n    scores<\/span>.<\/span>add<\/span>(<\/span>1<\/span>);<\/span>\r\n    scores<\/span>.<\/span>add<\/span>(<\/span>5<\/span>);<\/span>\r\n    scores<\/span>.<\/span>add<\/span>(<\/span>10<\/span>);<\/span>\r\n    scores<\/span>.<\/span>add<\/span>(<\/span>15<\/span>);<\/span>\r\n\r\n    System<\/span>.<\/span>out<\/span>.<\/span>println<\/span>(<\/span>scores<\/span>.<\/span>get<\/span>(<\/span>0<\/span>));<\/span>\r\n    System<\/span>.<\/span>out<\/span>.<\/span>println<\/span>(<\/span>scores<\/span>.<\/span>get<\/span>(<\/span>1<\/span>));<\/span>\r\n    System<\/span>.<\/span>out<\/span>.<\/span>println<\/span>(<\/span>scores<\/span>.<\/span>get<\/span>(<\/span>2<\/span>));<\/span>\r\n    System<\/span>.<\/span>out<\/span>.<\/span>println<\/span>(<\/span>scores<\/span>.<\/span>get<\/span>(<\/span>3<\/span>));<\/span>\r\n  }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u4f7f\u7528ArrayList\u65f6\u9700\u8981\u5148\u5bfc\u5165\u5e93\u3002
\n\u5728\u7f16\u5199\u4e0a\u8ff0\u4ee3\u7801\u65f6\uff0c\u8bf7\u6ce8\u610f\u7b2c\u4e00\u884c\u6709\u4e00\u4e2aimport\u8bed\u53e5\u3002<\/p>\n
\u8ba9\u6211\u4eec\u4e86\u89e3ArrayList\u7684\u4f7f\u7528\u65b9\u6cd5\u3002\u2460 \u5bfc\u5165\u5e93
\n\u2461 \u58f0\u660eArrayList
\n\u2462 \u7ed9ArrayList\u8d4b\u503c
\n\u2463 \u4eceArrayList\u4e2d\u53d6\u51fa\u5143\u7d20<\/p>\n
\u2460 \u5bfc\u5165\u5e93<\/p>\n
import<\/span> java.util.ArrayList<\/span>;<\/span>\r\n<\/code><\/pre>\n
\u8fdb\u884cArrayList\u7684\u58f0\u660e
\n\u6309\u4ee5\u4e0b\u65b9\u5f0f\u8fdb\u884c\u3002<\/p>\n
ArrayList<\/span><<\/span>\u30c7\u30fc\u30bf\u578b<\/span>><\/span> scores<\/span> =<\/span> new<\/span> ArrayList<\/span><<\/span>\u30c7\u30fc\u30bf\u578b<\/span>>();<\/span>\r\n<\/code><\/pre>\n
\u5728\u4e4b\u524d\u7684\u4ee3\u7801\u4e2d<\/p>\n
ArrayList<\/span><<\/span>Integer<\/span>><\/span> scores<\/span> =<\/span> new<\/span> ArrayList<\/span><<\/span>Integer<\/span>>();<\/span>\r\n<\/code><\/pre>\n
\u5728\u8fd9\u91cc\u6240\u8fdb\u884c\u7684\u52a8\u4f5c\u6709\u4ee5\u4e0b\u4e24\u4e2a\u3002<\/p>\n
\u2460 \u7528\u300cscore\u300d\u4f5c\u4e3a\u540d\u79f0\u58f0\u660e\u4e00\u4e2a\u5b58\u50a8\u6574\u6570\uff08Integer\uff09\u7684ArrayList\u3002
\n\u2461 \u521b\u5efaArrayList\u7684\u5143\u7d20\u3002<\/p>\n
\u7136\u540e\uff0c\u5c06\u2461\u4ee3\u5165\u5230\u2460\u4e2d\u3002<\/p>\n
\u987a\u4fbf\u63d0\u4e00\u4e0b\uff0c\u5728\u53f3\u4fa7\u4e5f\u6307\u5b9a\u4e86\u5143\u7d20\u7684\u6570\u636e\u7c7b\u578b\uff0c\u4f46\u662f\u53ef\u4ee5\u7701\u7565\u8fd9\u4e2a\u6307\u5b9a\u3002
\n\u4ee5\u4e0b\u8fd9\u6837\u5199\u4e5f\u4e0d\u4f1a\u6709\u95ee\u9898\uff0c\u53ef\u4ee5\u6b63\u5e38\u8fd0\u884c\u3002<\/p>\n
ArrayList<\/span><<\/span>Integer<\/span>><\/span> scores<\/span> =<\/span> new<\/span> ArrayList<\/span><>();<\/span>\r\n<\/code><\/pre>\n
\u4e3aArrayList\u8d4b\u503c\u9700\u8981\u4f7f\u7528add\u65b9\u6cd5\u6765\u6dfb\u52a0\u5143\u7d20\u3002<\/p>\n
\u4f7f\u7528add(\u8981\u6dfb\u52a0\u7684\u5143\u7d20)\u8fdb\u884c\u63cf\u8ff0\u3002<\/p>\n
\u5728\u4e4b\u524d\u6267\u884c\u7684\u4ee3\u7801\u4e2d\uff0c\u6211\u4eec\u5411\u540d\u4e3ascores\u7684ArrayList\u4e2d\u6dfb\u52a0\u4e86\u6570\u5b57”1″\u3002<\/p>\n
scores<\/span>.<\/span>add<\/span>(<\/span>1<\/span>);<\/span>\r\n<\/code><\/pre>\n
\u7528ArrayList\u4ece\u4e2d\u63d0\u53d6\u5143\u7d20\u7684\u65b9\u5f0f\u662f\u4f7f\u7528get\uff08\u5e0c\u671b\u83b7\u53d6\u5143\u7d20\u7684\u7d22\u5f15\uff09\u3002\u5c31\u50cf\u4ece\u6570\u7ec4\u4e2d\u63d0\u53d6\u5143\u7d20\u65f6\u4e00\u6837\uff0c\u5f53\u60f3\u8981\u63d0\u53d6\u201c\u7b2c\u4e00\u201d\u4e2a\u5143\u7d20\u65f6\uff0c\u7d22\u5f15\u4e3a\u201c0\u201d\u3002<\/p>\n
scores<\/span>.<\/span>get<\/span>(<\/span>0<\/span>)<\/span>\r\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"
Java\u7684\u6570\u7ec4\u9700\u8981\u5728\u6700\u5f00\u59cb\u786e\u5b9a\u8981\u5b58\u50a8\u7684\u5143\u7d20\u6570\u91cf\uff0c\u5e76\u4e14\u4e4b\u540e\u65e0\u6cd5\u66f4\u6539\u5143\u7d20\u6570\u91cf\u3002 \u5982\u679c\u60f3\u8981\u589e\u52a0\u5143\u7d20\uff0c\u53ef\u4ee5\u521b\u5efa\u4e00\u4e2a\u66f4\u5927 […]<\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[227],"class_list":["post-31082","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-227"],"yoast_head":"\nJava \u8f93\u51fa\u6570\u7ec4 - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"\u5173\u4e8eJava \u8f93\u51fa\u6570\u7ec4\u7684\u6280\u672f\u6587\u7ae0\" \/>\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\/zh\/blog\/java-\u8f93\u51fa\u6570\u7ec4\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Java \u8f93\u51fa\u6570\u7ec4\" \/>\n<meta property=\"og:description\" content=\"\u5173\u4e8eJava \u8f93\u51fa\u6570\u7ec4\u7684\u6280\u672f\u6587\u7ae0\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/zh\/blog\/java-\u8f93\u51fa\u6570\u7ec4\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - 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