文件查找(备注)

se7en8974

package cn.demo.action;import java.io.BufferedReader;import java.io.File;import java.io.FileFilter;import java.io.IOException;import java.io.InputStreamReader;public class Test implements FileFilter{//先判断操作系统，true为window系统否则为liunx系统public static boolean isWindowsOS(){    boolean isWindowsOS = false;    String osName = System.getProperty("os.name");    if(osName.toLowerCase().indexOf("windows")>-1){      isWindowsOS = true;    }    return isWindowsOS; }/** * @param args * @throws IOException  */public static void main(String[] args) throws IOException {// TODO Auto-generated method stub    File[] roots=File.listRoots();    for(int i=0;i< roots.length;i++){      System.out.println(roots[i].getPath());    }        System.out.println("请输入要查找的盘：");     BufferedReader in1 = new BufferedReader(new InputStreamReader(System.in));     String filename1 = in1.readLine();     File file1 = new File(filename1);     File[] fox = file1.listFiles();     String[] filelist1 = file1.list();     int length1;     try {       length1 = filelist1.length;     }     catch (NullPointerException e) {       throw new NullPointerException("错误：没有输入正确的要查找的文件所在盘");     }     //输入文件或文件夹     System.out.println("请输入要查找的文件或文件夹：");     BufferedReader in2 = new BufferedReader(new InputStreamReader(System.in));     String filename2 = in2.readLine();     File file2 = new File(filename1);     String[] filelist2 = file2.list();        //查找文件或文件夹     int f = 0;     for (int i = 0; i < length1; i++) {       if (filelist1[i].indexOf(filename2) >= 0) {         System.out.println(fox[i]);         f++;       }     }     if (f <= 0) {       System.out.println("没有你要找的文件");     }       }public boolean accept(File pathname) {return false;}}