File类

import java.io.*;
import java.util.*;
public class TestFile 
{
	public static void main(String[] args) throws IOException 
	{

		File file= new File(".");

		System.out.println(file.getName());
		System.out.println(file.getParent());
		System.out.println(file.getAbsolutePath());
		File tempFile=file.createTempFile("aaa",".txt",file);
		tempFile.deleteOnExit();


		File newFile= new File(System.currentTimeMillis()+"");
        System.out.println("newFile是否存在："+newFile.exists());
        newFile.createNewFile();
        newFile.mkdir();

		String[] strList = file.list();
		System.out.println("-------------当前的路径下所有的文件盒路劲：---------------------");
		for(String fileName:strList){
		    System.out.println(fileName);
		}
    System.out.println("-------------系统的根路径如下：-----------------------------：");
		File[] roots=File.listRoots();
		for(File root:roots){
		    System.out.println(root);
		}
	}
}