递归输出当前目录下的所有文件以及文件大小

import java.io.File;

public class FileList {
public static void main(String[] args) {
FileList fileList = new FileList();
File file = new File("F:"+File.separator+"class");
fileList.list(file);
}

public void list(File file){
printName(file);
if(file.isDirectory()){
File[] list = file.listFiles();
for (File file2 : list) {
list(file2);
}
}
}

public void printName(File file){
String name = file.getName();
if(file.isDirectory())
System.out.println("Dir: "+name);
else
System.out.println(file.getName()+" "+file.length());
}

}