j_example.java

一个十分好的java基础学习的课件

// ////////////////////////////////////////////////////////
// 
// J_Example.java
// 

// ////////////////////////////////////////////////////////

import java.io.*; 

public class J_Example
{

    public static void main(String args[])
    {
        for (int i = 0; i < args.length; i++)
        { 
            File f = new File(args[i]); 
            if (f.exists( ))
            { 
                System.out.println("getName: " + f.getName( ));
                System.out.println("getPath: " + f.getPath( ));
                System.out.println("getAbsolutePath: " + f.getAbsolutePath( )); 
                System.out.println("getParent: " + f.getParent( )); 
                if (f.canWrite( ))
                    System.out.println(f.getName( ) + " is writable."); 
                if (f.canRead( ))
                    System.out.println(f.getName( ) + " is readable."); 
                if (f.isFile( ))
                    System.out.println(f.getName( ) + " is a file.");
                else if (f.isDirectory( ))
                     System.out.println(f.getName( ) + " is a directory."); 
                else System.out.println("What is this?"); 
                if (f.isAbsolute( ))
                     System.out.println(f.getAbsolutePath( )+ " is an absolute path.");
                else System.out.println(f.getName( ) + " is not an absolute path."); 
                System.out.println("Last Modified: " + f.lastModified( )); 
                System.out.println(f.getName( ) + " is " + f.length( ) + " bytes."); 
            } 
            else System.out.println("Can't find the file " + args[i]);
        } // End of loop: for
    } // End of method: main

} // End of class: J_Example