\u76ee\u5f55\u662f\u7ba1\u7406\u6587\u4ef6\u7684\u7279\u6b8a\u673a\u5236\uff0c\u540c\u7c7b\u6587\u4ef6\u4fdd\u5b58\u5728\u540c\u4e00\u4e2a\u76ee\u5f55\u4e0b\u4e0d\u4ec5\u53ef\u4ee5\u7b80\u5316\u6587\u4ef6\u7ba1\u7406\uff0c\u800c\u4e14\u8fd8\u53ef\u4ee5\u63d0\u9ad8\u5de5\u4f5c\u6548\u7387\u3002Java \u8bed\u8a00\u5728 java.io \u5305\u4e2d\u5b9a\u4e49\u4e86\u4e00\u4e2a File \u7c7b\u4e13\u95e8\u7528\u6765\u7ba1\u7406\u78c1\u76d8\u6587\u4ef6\u548c\u76ee\u5f55\u3002
\n<\/p>\n
\u6bcf\u4e2a File \u7c7b\u5bf9\u8c61\u8868\u793a\u4e00\u4e2a\u78c1\u76d8\u6587\u4ef6\u6216\u76ee\u5f55\uff0c\u5176\u5bf9\u8c61\u5c5e\u6027\u4e2d\u5305\u542b\u4e86\u6587\u4ef6\u6216\u76ee\u5f55\u7684\u76f8\u5173\u4fe1\u606f\u3002\u901a\u8fc7\u8c03\u7528 File \u7c7b\u63d0\u4f9b\u7684\u5404\u79cd\u65b9\u6cd5\uff0c\u80fd\u591f\u521b\u5efa\u3001\u5220\u9664\u3001\u91cd\u540d\u540d\u6587\u4ef6\u3001\u5224\u65ad\u6587\u4ef6\u7684\u8bfb\u5199\u6743\u9650\u4ee5\u53ca\u662f\u5426\u5b58\u5728\uff0c\u8bbe\u7f6e\u548c\u67e5\u8be2\u6587\u4ef6\u7684\u6700\u8fd1\u4fee\u6539\u65f6\u95f4\u7b49\u3002\u4e0d\u540c\u64cd\u4f5c\u7cfb\u7edf\u5177\u6709\u4e0d\u540c\u7684\u6587\u4ef6\u7cfb\u7edf\u7ec4\u7ec7\u65b9\u5f0f\uff0c\u901a\u8fc7\u4f7f\u7528 File \u7c7b\u5bf9\u8c61\uff0cJava \u7a0b\u5e8f\u53ef\u4ee5\u7528\u4e0e\u5e73\u53f0\u65e0\u5173\u7684\u3001\u7edf\u4e00\u7684\u65b9\u5f0f\u6765\u5904\u7406\u6587\u4ef6\u548c\u76ee\u5f55\u3002
\n\u521b\u5efa File \u7c7b\u7684\u5bf9\u8c61<\/p>\n
\u521b\u5efa File \u7c7b\u5bf9\u8c61\u9700\u8981\u7ed9\u51fa\u5176\u6240\u5bf9\u5e94\u7684\u6587\u4ef6\u540d\u6216\u76ee\u5f55\u540d\uff0cFile \u7c7b\u7684\u6784\u9020\u65b9\u6cd5<\/p>\n
\u6784\u9020\u65b9\u6cd5\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u529f\u80fd\u63cf\u8ff0
\npublic File(String path) \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u6307\u5b9a\u4e0e File \u5bf9\u8c61\u5173\u8054\u7684\u6587\u4ef6\u6216\u76ee\u5f55\u540d\uff0cpath \u53ef\u4ee5\u5305\u542b\u8def\u5f84\u53ca\u6587\u4ef6\u548c\u76ee\u5f55\u540d
\npublic File(String path, String name) \u00a0\u00a0\u00a0\u00a0 \u4ee5 path \u4e3a\u8def\u5f84\uff0c\u4ee5 name \u4e3a\u6587\u4ef6\u6216\u76ee\u5f55\u540d\u521b\u5efa File \u5bf9\u8c61
\npublic File(File dir, String name) \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u7528\u73b0\u6709\u7684 File \u5bf9\u8c61 dir \u4f5c\u4e3a\u76ee\u5f55\uff0c\u4ee5 name \u4f5c\u4e3a\u6587\u4ef6\u6216\u76ee\u5f55\u540d\u521b\u5efa File \u5bf9\u8c61
\npublic File(URL ui) \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u4f7f\u7528\u7ed9\u5b9a\u7684\u7edf\u4e00\u8d44\u6e90\u5b9a\u4f4d\u7b26\u6765\u5b9a\u4f4d\u6587\u4ef6<\/p>\n
\u5728\u4f7f\u7528 File \u7c7b\u7684\u6784\u9020\u65b9\u6cd5\u65f6\uff0c\u9700\u8981\u6ce8\u610f\u4e0b\u9762\u51e0\u70b9\uff1a
\n\uff081\uff09path \u53c2\u6570\u53ef\u4ee5\u662f\u7edd\u5bf9\u8def\u5f84\uff0c\u4e5f\u53ef\u4ee5\u662f\u76f8\u5bf9\u8def\u5f84\uff0c\u4e5f\u53ef\u4ee5\u662f\u78c1\u76d8\u4e0a\u7684\u67d0\u4e2a\u76ee\u5f55\u3002
\n\uff08 2\uff09\u7531\u4e8e\u4e0d\u540c\u64cd\u4f5c\u7cfb\u7edf\u4f7f\u7528\u7684\u76ee\u5f55\u5206\u9694\u7b26\u4e0d\u540c\uff0c\u53ef\u4ee5\u4f7f\u7528 System \u7c7b\u7684\u4e00\u4e2a\u9759\u6001\u53d8\u91cfSystem.dirSep\uff0c\u6765\u5b9e\u73b0\u5728\u4e0d\u540c\u64cd\u4f5c\u7cfb\u7edf\u4e0b\u90fd\u901a\u7528\u7684\u8def\u5f84\u3002\u5982\uff1a
\n\u00a0\u00a0\u00a0 “d:”+System.dirSep+”myjava”+System.dirSep+”file”
\n\u83b7\u53d6\u5c5e\u6027\u548c\u64cd\u4f5c<\/p>\n
\u501f\u52a9 File \u5bf9\u8c61\uff0c\u53ef\u4ee5\u83b7\u53d6\u6587\u4ef6\u548c\u76f8\u5173\u76ee\u5f55\u7684\u5c5e\u6027\u4fe1\u606f\u5e76\u53ef\u4ee5\u5bf9\u5176\u8fdb\u884c\u7ba1\u7406\u548c\u64cd\u4f5c\u3002
\n\u65b9\u6cd5\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u529f\u80fd\u63cf\u8ff0
\nboolean canRead() \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u5982\u679c\u6587\u4ef6\u53ef\u8bfb\uff0c\u8fd4\u56de\u771f\uff0c\u5426\u5219\u8fd4\u56de\u5047
\nboolean canWrite() \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u5982\u679c\u6587\u4ef6\u53ef\u5199\uff0c\u8fd4\u56de\u771f\uff0c\u5426\u5219\u8fd4\u56de\u5047
\nboolean exists() \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u5224\u65ad\u6587\u4ef6\u6216\u76ee\u5f55\u662f\u5426\u5b58\u5728
\nboolean createNewFile() \u00a0\u00a0\u00a0 \u82e5\u6587\u4ef6\u4e0d\u5b58\u5728\uff0c\u5219\u521b\u5efa\u6307\u5b9a\u540d\u5b57\u7684\u7a7a\u6587\u4ef6\uff0c\u5e76\u8fd4\u56de\u771f\uff0c\u82e5\u4e0d\u5b58\u5728\u8fd4\u56de\u5047
\nboolean isFile() \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u5224\u65ad\u5bf9\u8c61\u662f\u5426\u4ee3\u8868\u6709\u6548\u6587\u4ef6
\nboolean isDirectory() \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u5224\u65ad\u5bf9\u8c61\u662f\u5426\u4ee3\u8868\u6709\u6548\u76ee\u5f55
\nboolean equals(File f) \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u6bd4\u8f83\u4e24\u4e2a\u6587\u4ef6\u6216\u76ee\u5f55\u662f\u5426\u76f8\u540c
\nstring getName() \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u8fd4\u56de\u6587\u4ef6\u540d\u6216\u76ee\u5f55\u540d\u7684\u5b57\u7b26\u4e32
\nstring getPath() \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u8fd4\u56de\u6587\u4ef6\u6216\u76ee\u5f55\u8def\u5f84\u7684\u5b57\u7b26\u4e32
\nlong length() \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u8fd4\u56de\u6587\u4ef6\u7684\u5b57\u8282\u6570\uff0c\u82e5 File \u5bf9\u8c61\u4ee3\u8868\u76ee\u5f55\uff0c\u5219\u8fd4\u56de 0
\nlong lastModified() \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u8fd4\u56de\u6587\u4ef6\u6216\u76ee\u5f55\u6700\u8fd1\u4e00\u6b21\u4fee\u6539\u7684\u65f6\u95f4
\nString[] list() \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u5c06\u76ee\u5f55\u4e2d\u6240\u6709\u6587\u4ef6\u540d\u4fdd\u5b58\u5728\u5b57\u7b26\u4e32\u6570\u7ec4\u4e2d\u5e76\u8fd4\u56de\uff0c\u82e5 File \u5bf9\u8c61\u4e0d\u662f\u76ee\u5f55\u8fd4\u56de null
\nboolean delete() \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u5220\u9664\u6587\u4ef6\u6216\u76ee\u5f55\uff0c\u5fc5\u987b\u662f\u7a7a\u76ee\u5f55\u624d\u80fd\u5220\u9664\uff0c\u5220\u9664\u6210\u529f\u8fd4\u56de\u771f\uff0c\u5426\u5219\u8fd4\u56de\u5047
\nboolean mkdir() \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u521b\u5efa\u5f53\u524d\u76ee\u5f55\u7684\u5b50\u76ee\u5f55\uff0c\u6210\u529f\u8fd4\u56de\u771f\uff0c\u5426\u5219\u8fd4\u56de\u5047
\nboolean renameTo(File newFile) \u00a0\u5c06\u6587\u4ef6\u91cd\u547d\u540d\u4e3a\u6307\u5b9a\u7684\u6587\u4ef6\u540d<\/p>\n
\u3010\u4f8b 10-11\u3011\u5224\u65ad\u8f93\u5165\u7684\u7edd\u5bf9\u8def\u5f84\u662f\u4ee3\u8868\u4e00\u4e2a\u6587\u4ef6\u6216\u4e00\u4e2a\u76ee\u5f55\u3002\u82e5\u662f\u6587\u4ef6\u8f93\u51fa\u6b64\u6587\u4ef6\u7684\u7edd\u5bf9\u8def\u5f84\uff0c\u5e76\u5224\u65ad\u6b64\u6587\u4ef6\u7684\u6587\u4ef6\u5c5e\u6027\uff08\u662f\u5426\u53ef\u8bfb\u5199\u6216\u9690\u85cf\uff09;\u82e5\u662f\u76ee\u5f55\u5219\u8f93\u51fa\u8be5\u76ee\u5f55\u4e0b\u6240\u6709\u6587\u4ef6\uff08\u4e0d\u5305\u62ec\u9690\u85cf\u6587\u4ef6\uff09\u3002
\n[java]import java.io.*;
\nclass ep10_11{
\n\u00a0\u00a0\u00a0 public static void main(String args[]) throws IOException{
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 String FilePath;
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 InputStreamReader in=new InputStreamReader(System.in);
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 BufferedReader a=new BufferedReader(in);
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 System.out.println("\u8bf7\u8f93\u5165\u4e00\u4e2a\u7edd\u5bf9\u8def\u5f84\uff1a");
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 FilePath=a.readLine(); \/\/\u5c06 FilePath \u4f5c\u4e3a\u8f93\u5165\u503c
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 File FileName=new File(FilePath); \/\/\u83b7\u5f97\u6b64\u8def\u5f84\u7684\u6587\u4ef6\u540d\u79f0
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 if (FileName.isDirectory()){ \/\/\u5224\u65ad\u6b64\u6587\u4ef6\u662f\u5426\u4e3a\u76ee\u5f55
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 System.out.println((FileName.getName())+"\u4e3a\u4e00\u4e2a\u76ee\u5f55");
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 System.out.println("================");
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 File FileList[]=FileName.listFiles(); \/\/\u5c06\u76ee\u5f55\u4e0b\u6240\u6709\u6587\u4ef6\u5b58\u5165\u6570\u7ec4
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 for(int i=0;i<FileList.length;i++){
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 if(FileList[i].isHidden()==false){ \/\/\u5224\u65ad\u662f\u5426\u4e3a\u9690\u85cf\u6587\u4ef6
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 System.out.println(FileList[i].getName()); \/\/\u8f93\u51fa\u975e\u9690\u85cf\u6587\u4ef6
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 }
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 }
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 }
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 else{
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 System.out.println((FileName.getName())+"\u4e3a\u4e00\u4e2a\u6587\u4ef6");
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 System.out.println("================");
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \/\/\u83b7\u5f97\u6587\u4ef6\u7edd\u5bf9\u8def\u5f84
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 System.out.println("\u7edd\u5bf9\u8def\u5f84\u4e3a\uff1a"+FileName.getAbsolutePath());
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \/\/\u5224\u65ad\u6b64\u6587\u4ef6\u662f\u5426\u53ef\u8bfb\u53d6
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 System.out.println(FileName.canRead()?"\u53ef\u8bfb\u53d6":"\u4e0d\u53ef\u8bfb\u53d6");
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \/\/\u5224\u65ad\u6b64\u6587\u4ef6\u662f\u5426\u53ef\u4fee\u6539
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 System.out.println(FileName.canWrite()?"\u53ef\u4fee\u6539":"\u4e0d\u53ef\u4fee\u6539");
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \/\/\u5224\u65ad\u6b64\u6587\u4ef6\u662f\u5426\u4e3a\u9690\u85cf
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 System.out.println(FileName.isHidden()?"\u4e3a\u9690\u85cf\u6587\u4ef6":"\u975e\u9690\u85cf\u6587\u4ef6");
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 }
\n\u00a0\u00a0\u00a0 }
\n}
\n[\/java]<\/p>\n","protected":false},"excerpt":{"rendered":"
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