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ListAllFiles.java
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66 lines (57 loc) · 1.34 KB
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package io;
import java.io.File;
import java.util.ArrayList;
import java.util.List;
public class ListAllFiles {
private static int level;//用于记录目录或文件的层数,为缩进服务
//使用递归来显示某一目录下所有的文件(要有缩进)
public static void listAll(File file){
if(file.isFile()||file.listFiles().length==0){
return ;
}
else{
File [] files=file.listFiles();
files=sort(files);
for(File f:files){
StringBuffer buffer=new StringBuffer();
if(f.isFile()){
buffer.append(getTabs(level));
buffer.append(f.getName());
}
else{
buffer.append(getTabs(level));
buffer.append(f.getName());
buffer.append("\\");
}
System.out.println(buffer);
if(f.isDirectory()){
level++;
listAll(f);
level--;
}
}
}
}
//排序,使得目录显示在文件的上面
private static File[] sort(File[] files){
List<File> list=new ArrayList<File>();
for(File f:files){
if(f.isDirectory()){list.add(f);}
}
for(File f:files){
if(f.isFile()){list.add(f);}
}
return list.toArray(new File[files.length]);
}
public static String getTabs(int level){
StringBuffer buffer=new StringBuffer();
for(int i=0;i<level;i++){
buffer.append("\t");
}
return buffer.toString();
}
public static void main(String[] args) {
File file=new File("F:\\TDDOWNLOAD");
listAll(file);
}
}