File遍历查找

System.out.println("-------------list()方法--------------");
    File dir2=new File("d:\\");
    String[] list = dir2.list();
    for (String string : list) {
        System.out.println(string);
    }

String[] list=dir.list(new FilenameFilter() {
    @Override
    public boolean accept(File dir, String name) {
        if(name.endsWith(".pdf")){
            return true;
        }
        return false;
    }
});
    for (String string : list) {
        System.out.println(string);
    }    

public static void listFiles(File dir){
    System.out.println(dir.getAbsolutePath());
    File[] listFiles = dir.listFiles();
    if(listFiles!=null){
        for (File file : listFiles) {
            if(file.isDirectory()){//如果是文件夹自己调用自己
            listFiles(file);
            }else{
                System.out.println(file.getAbsolutePath());
            }
        }
    }
}    

public static void deleteDir(File dir){
    File[] files=dir.listFiles();
    if(files!=null){
        for (File file : files) {
            if(file.isDirectory()){
                deleteDir(file);
            }else{
                System.out.println("删除文件:"+
file.getAbsolutePath());
                file.delete();
            }
        }
            
    }
    //删除空文件夹
    System.out.println("删除文件夹:"+dir.getAbsolutePath());
    dir.delete();
}