源程序List1.java,展示了如何使用list()方法来检查一个目录的内容的实例

import java.io.File;
public class List1
{
public static void main(String args[])
{
String dirname="\\java";
File f=new File(dirname);
if(f.isDirectory())
{
System.out.println("Directory of"+dirname);
String s[]=f.list();
for(int i=0;i<s.length;i++
{
File f1=new File(dirname +"\\"+s[i]);
if(f1.isDirectory())
{
System.out.println(s[i]+"is a directory");
}
else
{
System.out.println(s[i]+"is a file");
}
}
}
else
{
System.out.println(durname+" is nit a directory");
}
}
}