Java小程序之显示文件夹结构

import java.io.File;

public class DirStructure {
public void showStructure(File file,int level){
DirStructure ds=new DirStructure();
for(int i=1;i<=level;i++){
System.out.print(" ");
}
System.out.println("-"+file.getName());

if(file.isDirectory()){

File[] f=file.listFiles();

for(File t:f){
ds.showStructure(t,level+1);
}
}
}
}

import java.io.File;

public class Test {
public static void main(String[] args) {
File file=new File("D:/hello");
DirStructure d=new DirStructure();
d.showStructure(file,0);
}
}