{"id":55,"date":"2021-08-24T10:58:23","date_gmt":"2021-08-24T02:58:23","guid":{"rendered":"https:\/\/www.52dixiaowo.com\/javav2\/?p=55"},"modified":"2021-08-24T14:40:00","modified_gmt":"2021-08-24T06:40:00","slug":"java%e9%9d%a2%e5%90%91%e5%af%b9%e8%b1%a1%e4%b9%8b%e5%b0%81%e8%a3%85","status":"publish","type":"post","link":"https:\/\/www.52dixiaowo.com\/javav2\/post-55.html","title":{"rendered":"java\u9762\u5411\u5bf9\u8c61\u4e4b\u5c01\u88c5"},"content":{"rendered":"\n<p>\u5c01\u88c5\uff0c\u662f\u9762\u5411\u5bf9\u8c61\u7684\u4e09\u5927\u7279\u6027\u4e4b\u4e00\u3002<\/p>\n\n\n\n<p>\u5c01\u88c5\u4e00\u8bcd\uff0c\u53ef\u4ee5\u6709\u591a\u79cd\u7406\u89e3\uff1a<\/p>\n\n\n\n<ul><li>\u628a\u591a\u884c\u4ee3\u7801\u6253\u5305\u4e3a\u4e00\u4e2a\u65b9\u6cd5<\/li><li>\u9690\u85cf\u5185\u90e8\u7684\u7ec6\u8282\uff0c\u53ea\u66b4\u9732\u7edf\u4e00\u7684\u63a5\u53e3<\/li><\/ul>\n\n\n\n<p>\u5728java\u4e2d\u7684\u9762\u5411\u5bf9\u8c61\uff0c\u5c01\u88c5\u4e5f\u6709\u591a\u79cd\u610f\u4e49<\/p>\n\n\n\n<ol><li>\u628a\u6bcf\u4e00\u4e2ajava\u6587\u4ef6\u4f7f\u7528package\u6253\u5305<\/li><li>\u628a\u5177\u6709\u76f8\u540c\u5c5e\u6027\u3001\u884c\u4e3a\u7684\u5bf9\u8c61\u5f52\u4e3a\u4e00\u7c7b<\/li><li>\u7c7b\u6210\u5458\u62e5\u67094\u79cd\u6743\u9650\u4fee\u9970\u7b26<\/li><li>\u628a\u4e00\u4e2a\u7c7b\u7684\u5c5e\u6027\u79c1\u6709\u5316\uff0c\u5e76\u4f7f\u7528getter\/setter\u65b9\u6cd5\u8bbf\u95ee<\/li><\/ol>\n\n\n\n<h2>package\u4e0eimport<\/h2>\n\n\n\n<p>\u5305\uff0c\u662fjava\u5de5\u7a0b\u7684\u91cd\u8981\u7ed3\u6784\uff0c\u4e00\u4e2a\u5de5\u7a0b\u53ef\u4ee5\u6709\u591a\u4e2a\u5305\uff0c\u6bcf\u4e2a\u5305\u5bf9\u5e94\u7684\u662f\u4e00\u4e2a\u6587\u4ef6\u5939<\/p>\n\n\n\n<p>\u5305\uff08package\uff09\u7528\u4e8e\u7ba1\u7406java\u6587\u4ef6\uff0c\u540c\u4e00\u4e2a\u5305\u4e0b\u7684\u5916\u90e8\u7c7b\u4e0d\u53ef\u4ee5\u540c\u540d\uff0c\u5728\u4e0d\u540c\u5305\u4e0b\u7684\u7c7b\u53ef\u4ee5\u540c\u540d\uff0c\uff0c\u5728\u4e00\u4e2a\u6587\u4ef6\u5939\u4e0b\uff0c\u53ef\u4ee5\u6709\u591a\u4e2a .java \u6587\u4ef6\uff0c\u6bcf\u4e2ajava\u6587\u4ef6\u53ef\u4ee5\u6709\u591a\u4e2a\u7c7b\uff0c\u6709\u4e14\u4ec5\u6709\u4e00\u4e2a\u7c7b\u4e3apublic\uff0c\u5176\u4ed6\u5916\u90e8\u7c7b\u53ea\u80fd\u662fdefault<\/p>\n\n\n\n<p>\u6bcf\u4e2ajava\u6587\u4ef6\u5934\u90e8\u7b2c\u4e00\u884c\u4f7f\u7528package\u8bed\u53e5\u6253\u5305\uff0c\u8bed\u6cd5\u4e3a package \u6587\u4ef6\u5939\u540d<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>package abc.def;   \/\/ \u5728src\u4e0b\u7684abc\u76ee\u5f55\u4e0b\u7684def\u76ee\u5f55<\/code><\/pre>\n\n\n\n<p>\u5982\u679c\u4e0d\u6253\u5305\uff0c\u5219\u5728\u9ed8\u8ba4\u5305\u4e0b\uff0c\u4f46\u5b83\u5c06\u65e0\u6cd5\u88ab\u5176\u4ed6\u7c7b\u5bfc\u5165\u4f7f\u7528\uff0c\u4f7f\u7528import \u8bed\u53e5\u5728\u5176\u4ed6\u4efb\u4e00 java\u6587\u4ef6\u4e2d\u4f7f\u7528import \u5305\u540d.\u7c7b\u540d<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>import abc.def.MyClass;  \/\/ abc.def\u5305\u4e0b\u7684 MyClass \u7c7b<\/code><\/pre>\n\n\n\n<p>\u901a\u5e38\u8ba4\u4e3ajava\u5de5\u7a0b\u4e2dsrc\u76ee\u5f55\u4e0b\u662fjava\u6587\u4ef6\uff0c\u8be5\u76ee\u5f55\u5373default\u76ee\u5f55<\/p>\n\n\n\n<p>\u5bfc\u5305\u65f6\uff0c\u8fd8\u9700\u8981\u6ce8\u610f\uff1a<\/p>\n\n\n\n<ul><li>java\u6587\u4ef6\u4e2ddefault\u4fee\u9970\u7684\u5916\u90e8\u7c7b\u4e0d\u53ef\u4ee5\u5bfc\u5165<\/li><li>\u53ef\u4ee5\u4f7f\u7528 \u5305\u540d.* \u5bfc\u5165\u8be5\u5305\u4e0b\u6240\u6709\u7684\u7c7b<\/li><li>\u540c\u4e00\u4e2a\u5305\u4e0b\u4e0d\u9700\u8981\u4f7f\u7528import\u8bed\u53e5\u5bfc\u5305<\/li><\/ul>\n\n\n\n<h2>\u7c7b\u4e0e\u5bf9\u8c61<\/h2>\n\n\n\n<p>\u4ec0\u4e48\u662f\u7c7b\uff1f\u4ec0\u4e48\u662f\u5bf9\u8c61\uff1f<\/p>\n\n\n\n<p>\u7c7b\uff1a\u8868\u793a\u4e00\u7c7b\u5177\u6709\u76f8\u540c\u5c5e\u6027\u3001\u884c\u4e3a\u7684\u5bf9\u8c61\u7684\u96c6\u5408\uff0c\u662f\u4e00\u4e2a\u62bd\u8c61\u6982\u5ff5<\/p>\n\n\n\n<p>\u5bf9\u8c61\uff1a\u5bf9\u8c61\u662f\u6307\u6839\u636e\u7c7b\u521b\u5efa\u7684\u4e00\u4e2a\u5b9e\u4f8b\u5316\u7684\u5b9e\u4f53<\/p>\n\n\n\n<h4>\u7c7b\u4e0e\u5bf9\u8c61\u7684\u5173\u7cfb<\/h4>\n\n\n\n<p>\u7c7b\uff0c\u8868\u793a\u4e00\u4e2a\u6a21\u677f\uff0c\u5728\u7f16\u5199\u5bf9\u8c61\u524d\uff0c\u5fc5\u987b\u5148\u6709\u7c7b\u8fd9\u4e2a\u6a21\u677f<\/p>\n\n\n\n<p>\u5bf9\u8c61\uff0c\u5bf9\u8c61\u662f\u7c7b\u7684\u5b9e\u4f8b\uff0c\u5bf9\u8c61\u662f\u7531\u7c7b\u8fd9\u4e2a\u6a21\u677f\u521b\u5efa\uff08new\uff09\u7684<\/p>\n\n\n\n<h4>java\u7c7b\u4f53\u7ed3\u6784<\/h4>\n\n\n\n<p>\u7c7b\u4f53\u4e2d\u53ef\u4ee5\u6709\u5982\u4e0b6\u79cd\u5185\u5bb9<\/p>\n\n\n\n<ol><li>\u6210\u5458\u53d8\u91cf\uff08\u5305\u542b\u9759\u6001\uff09<\/li><li>\u6210\u5458\u65b9\u6cd5<\/li><li>\u6784\u9020\u65b9\u6cd5<\/li><li>\u9759\u6001\u4ee3\u7801\u5757<\/li><li>\u975e\u9759\u6001\u4ee3\u7801\u5757\uff08\u5b9e\u4f8b\u4ee3\u7801\u5757\uff09<\/li><li>\u5185\u90e8\u7c7b<\/li><\/ol>\n\n\n\n<p>\u5176\u4e2d\uff0c\u7528\u7684\u6700\u591a\u7684\u662f\uff0c\u201d\u6210\u5458\u53d8\u91cf\u201d \u548c \u201c\u6210\u5458\u65b9\u6cd5\u201d<\/p>\n\n\n\n<p>\u4f8b\u5982\uff0c\u521b\u5efa\u4e00\u4e2a Student \u7c7b\uff0c\u5373\u7f16\u5199 class \u4ee3\u7801<\/p>\n\n\n\n<ul><li>\u5c5e\u6027(\u6210\u5458\u53d8\u91cf)\uff1a\u59d3\u540d\uff0c\u5e74\u9f84<\/li><li>\u65b9\u6cd5(\u6210\u5458\u65b9\u6cd5)\uff1a\u5403\u996d\uff0c\u5b66\u4e60\uff0c\u7761\u89c9<\/li><\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>public class Student{\n  String name; \/\/\u59d3\u540d\n  int age; \/\/\u5e74\u9f84\n  public void eat(){\n    System.out.println(\"\u5f00\u59cb\u5403\u996d\");\n  }\n  public void sleep(){\n    System.out.println(\"\u5f00\u59cb\u7761\u89c9\");\n  }\n  public void study(){\n    System.out.println(\"\u5f00\u59cb\u5b66\u4e60\");\n  }\n}<\/code><\/pre>\n\n\n\n<h4>new\u5173\u952e\u5b57\uff0c\u521b\u5efa\u5bf9\u8c61<\/h4>\n\n\n\n<p>new \u5173\u952e\u5b57\u7528\u4e8e \u4ece\u7c7b\u4e2d\u521b\u5efa\u5bf9\u8c61\uff0c\u4f7f\u7528new\u540e\uff0c\u6bcf\u4e2a\u5bf9\u8c61\u90fd\u5c06\u83b7\u5f97\u5404\u81ea\u7684\u5185\u5b58<\/p>\n\n\n\n<p>\u8bed\u6cd5\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\u7c7b\u540d\u79f0 \u5bf9\u8c61\u540d\u79f0 = new \u7c7b\u540d\u79f0(\u53c2\u6570);<\/code><\/pre>\n\n\n\n<p>\u5bf9\u8c61\u540d\u79f0\uff0c\u662f\u4e00\u4e2a\u53d8\u91cf\uff0c\u9075\u5b88\u6807\u8bc6\u7b26\u7684\u547d\u540d\u89c4\u5219<\/p>\n\n\n\n<p>\u5176\u4e2d\u7684\u53c2\u6570\uff0c\u662f\u6784\u9020\u51fd\u6570\u4e2d\u4f20\u9012\u7684\u53c2\u6570\uff0c\u6784\u9020\u51fd\u6570\u53ef\u4ee5\u4e3a\u7a7a\u53c2\uff1b<\/p>\n\n\n\n<p>\u4e0b\u9762\uff0c\u521b\u5efa\u4e00\u4e2a Student \u5bf9\u8c61\uff0c\u5e76\u4f7f\u7528\uff08\u83b7\u53d6\u5c5e\u6027\u548c\u8c03\u7528\u65b9\u6cd5\uff09<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>public static void main(String&#91;] args) {\n\tStudent stu = new Student();\n\tSystem.out.println(\"\u5b66\u751f\u7684\u540d\u79f0\u662f\"+stu.age);\n\tstu.study();\n}<\/code><\/pre>\n\n\n\n<h4>javaBean<\/h4>\n\n\n\n<p>\u4e00\u4e2a\u6807\u51c6\u7684java\u7c7b\uff0c\u53eb\u505ajavaBean\uff0c\u62e5\u67094\u4e2a\u7279\u70b9<\/p>\n\n\n\n<ul><li>\u6240\u6709\u7684\u6210\u5458\u53d8\u91cf\uff0c\u90fd\u8981\u4f7f\u7528 private \u4fee\u9970<\/li><li>\u6bcf\u4e2a\u6210\u5458\u53d8\u91cf\uff0c\u90fd\u5fc5\u987b\u6709\u4e00\u5bf9 Getter\/Setter<\/li><li>\u5fc5\u987b\u6709\u4e00\u4e2a\u65e0\u53c2\u6784\u9020<\/li><li>\u5fc5\u987b\u6709\u4e00\u4e2a\u5168\u53c2\u6784\u9020<\/li><\/ul>\n\n\n\n<h2>4\u79cd\u6743\u9650\u4fee\u9970\u7b26<\/h2>\n\n\n\n<p>4\u79cd\u6743\u9650\u4fee\u9970\u7b26\uff0c\u662f\u9488\u5bf9\u7c7b\u4e2d\u6210\u5458\u7684\uff0c\u5305\u62ec\u6210\u5458\u5c5e\u6027\uff08\u5305\u62ec\u9759\u6001\uff09\u3001\u6210\u5458\u65b9\u6cd5\u3001\u5c40\u90e8\u7c7b\u7b49<\/p>\n\n\n\n<p>\u8fd9\u91cc\u7684default\u5e76\u4e0d\u662fswitch\/case\u7684default\uff0c\u800c\u662f\u8868\u793a\u201c\u7f3a\u7701\u201d\uff0c4\u79cd\u6743\u9650\u4fee\u9970\u7b26\u8bbf\u95ee\u63a7\u5236\u5982\u4e0b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><th>\u4fee\u9970\u7b26<\/th><th>\u5f53\u524d\u7c7b<\/th><th>\u540c\u4e00\u5305\u5185<\/th><th>\u4e0d\u540c\u5305\u5b50\u7c7b<\/th><th>\u4e0d\u540c\u5305\u975e\u5b50\u7c7b<\/th><\/tr><tr><td><code>public<\/code><\/td><td>Y<\/td><td>Y<\/td><td>Y<\/td><td>Y<\/td><\/tr><tr><td><code>protected<\/code><\/td><td>Y<\/td><td>Y<\/td><td>Y<\/td><td>N<\/td><\/tr><tr><td><code>default<\/code><\/td><td>Y<\/td><td>Y<\/td><td>N<\/td><td>N<\/td><\/tr><tr><td><code>private<\/code><\/td><td>Y<\/td><td>N<\/td><td>N<\/td><td>N<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2>getter\/setter\u65b9\u6cd5<\/h2>\n\n\n\n<p>\u8fd92\u79cd\u65b9\u6cd5\uff0c\u662f\u628a\u5c5e\u6027\u79c1\u6709\u5316\uff0c\u7136\u540e\u7528public\u65b9\u6cd5\u516c\u5f00\u8bbf\u95ee\u7684\u624b\u6bb5\uff0c\u90a3\u4e48\uff0c\u5b83\u662f\u5426\u6709\u610f\u4e49\uff1f\u5b83\u5230\u5e95\u6709\u4ec0\u4e48\u610f\u4e49\uff1f<\/p>\n\n\n\n<p>\u8fd92\u4e2a\u65b9\u6cd5\u662f\u6709\u610f\u4e49\u7684\uff0c\u5e76\u975e\u591a\u6b64\u4e00\u4e3e\uff0c\u4f8b\u5982\uff1a<\/p>\n\n\n\n<ul><li>\u4f7f\u7528getter\/setter\u66b4\u9732\u63a5\u53e3\u65f6\uff0c\u5373\u4f7f\u4fee\u6539\u4e86\u5185\u90e8\u5c5e\u6027\uff0c\u4f46\u5916\u90e8\u5e76\u4e0d\u5f71\u54cd<\/li><li>\u53ef\u4ee5\u5bf9\u6570\u636e\u8fdb\u884c\u989d\u5916\u7684\u6821\u9a8c\uff0c\u6bd4\u5982\u5b58\u503c\u9650\u5b9a\u8303\u56f4<\/li><li>\u591a\u6001\u65f6\u8c03\u7528\u5b50\u7c7b\u5c5e\u6027<\/li><li>\u53ef\u4ee5\u7528\u4e8elambda\u8868\u8fbe\u5f0f<\/li><li>\u53ef\u4ee5\u7528\u4e8e\u60f0\u6027\u6c42\u503c\uff0c\u5f53\u6570\u636e\u88ab\u8c03\u7528\uff0c\u518d\u8ba1\u7b97\u5c5e\u6027<\/li><li>\u5728\u591a\u7ebf\u7a0b\u65f6\uff0c\u7ebf\u7a0b\u5b89\u5168<\/li><li>&#8230;<\/li><\/ul>\n\n\n\n<p>\u5728\u7f16\u5199getter\/setter\u65f6\uff0c\u901a\u5e38\u4f7f\u7528getXxx()\u53d6\u503c\uff0c\u7136\u540e\u4f7f\u7528setXxx(x)\u5b58\u503c<\/p>\n\n\n\n<p>\u4f46\u5bf9\u4e8eboolean\u7c7b\u578b\uff0c\u53d6\u503c\u662fisXxx()\uff0c\u4f8b\u5982\u4ee5\u4e0b\u5b9e\u4f8b<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>public class Human {\n    \n    private String name;\n    private int age;\n    private  char sex;\n    private  boolean check;\n\n    public String getName() {\n        return name;\n    }\n\n    public void setName(String name) {\n        this.name = name;\n    }\n\n    public int getAge() {\n        return age;\n    }\n\n    public void setAge(int age) {\n        this.age = age;\n    }\n\n    public char getSex() {\n        return sex;\n    }\n\n    public void setSex(char sex) {\n        this.sex = sex;\n    }\n\n    public boolean isCheck() {  \/\/ \u4e0d\u662fsetCheck\n        return check;\n    }\n\n    public void setCheck(boolean check) {\n        this.check = check;\n    }\n}<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>\u5c01\u88c5\uff0c\u662f\u9762\u5411\u5bf9\u8c61\u7684\u4e09\u5927\u7279\u6027\u4e4b\u4e00\u3002 \u5c01\u88c5\u4e00\u8bcd\uff0c\u53ef\u4ee5\u6709\u591a\u79cd\u7406\u89e3\uff1a \u628a\u591a\u884c\u4ee3\u7801\u6253\u5305\u4e3a\u4e00\u4e2a\u65b9\u6cd5 \u9690\u85cf\u5185\u90e8\u7684\u7ec6\u8282\uff0c\u53ea\u66b4\u9732&hellip; <a href=\"https:\/\/www.52dixiaowo.com\/javav2\/post-55.html\" class=\"more-link\">\u7ee7\u7eed\u9605\u8bfb <span class=\"screen-reader-text\">java\u9762\u5411\u5bf9\u8c61\u4e4b\u5c01\u88c5<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[4],"tags":[],"_links":{"self":[{"href":"https:\/\/www.52dixiaowo.com\/javav2\/wp-json\/wp\/v2\/posts\/55"}],"collection":[{"href":"https:\/\/www.52dixiaowo.com\/javav2\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.52dixiaowo.com\/javav2\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.52dixiaowo.com\/javav2\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.52dixiaowo.com\/javav2\/wp-json\/wp\/v2\/comments?post=55"}],"version-history":[{"count":0,"href":"https:\/\/www.52dixiaowo.com\/javav2\/wp-json\/wp\/v2\/posts\/55\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.52dixiaowo.com\/javav2\/wp-json\/wp\/v2\/media?parent=55"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.52dixiaowo.com\/javav2\/wp-json\/wp\/v2\/categories?post=55"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.52dixiaowo.com\/javav2\/wp-json\/wp\/v2\/tags?post=55"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}