看jdk文档阿
class
java.io.File方法
File[] listFiles()
Returns an array of abstract pathnames denoting the files in the directory denoted by this abstract pathname.
class
java.io.File方法
File[] listFiles()
Returns an array of abstract pathnames denoting the files in the directory denoted by this abstract pathname.
return;
else
String[] fileList=file.list(); for(int i=0;i < fileList.length; i++){
//........
//...........
}
import java.io.*;
public class files{
public static void main(String args[]){
File input = new File("c:\\aa\\");
File println= input.getParentFile();//取的是父目录
String xprintln = input.getParent();
System.out.println(0);
System.out.println(println.isDirectory());//条件为false所以没有执行你下面的逻辑
if(println.isDirectory()){
System.out.println(1);
String [] list = println.list();
for(int i=0;i<list.length;i++){
System.out.println(2);
System.out.println(list[i]);
}
}
}
}