java File經常使用的方法

import java.io.File;

public class a_22 {

public static void main(String[] args) {

	File f= new File("D:\\tianya\\2019.3.14\\html");
	System.out.println(f.isDirectory());
	System.out.println(f.isAbsolute());
	System.out.println(f.isFile());
	System.out.println(f.isHidden());
	System.out.println(f.canExecute());
	System.out.println(f.canRead());
	System.out.println(f.canWrite());
	System.out.println(f.getAbsolutePath());
	System.out.println(f.getFreeSpace());
	System.out.println(f.getName());
	System.out.println(f.getParent());
	System.out.println(f.getTotalSpace());
	System.out.println(f.getUsableSpace());
	String a[]=f.list();
	for(int i=0;i<a.length;i++)
		System.out.println(a[i]);
	System.out.println(f.exists());

}

}