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[deAppel]

Code

GeSHi (java):
import java.awt.Container;
import java.io.BufferedReader;
import java.io.File;
import java.io.IOException;
import java.io.InputStreamReader;
 
import javax.swing.ImageIcon;
import javax.swing.JFrame;
import javax.swing.JLabel;
 
/*--------------------------------------------------------------------------
//Author List:
// deAppel					<Creator>
//
//Description:
//	My demo that displays an image using the commandline interface.
//
//Environment:
// This software was developed using Eclipse and Java 1.6
//
//Copyright Information:
// Copyright (C) 2007      <Institution><None>
//		Ark de Appel 			www.engineeringserver.com
//
//----------------------------------------------------------------------*/
 
public class ChooseImage  extends JFrame{
	static JLabel showImage;
	static File f;
 
 
	public void testImage(){ //show demo image, not needed now..
 
		//Container c = getContentPane();
		showImage = new JLabel(new ImageIcon("C:\\42.gif"));
		add(showImage);
		setTitle("My Image number: DEMO");
		pack();
		setLocationRelativeTo(null);
		setVisible(true);
	}
 
	public void showImageGui(int a){
		//Container c = getContentPane();
		String myString  = "c:\\" + Integer.toString(a)+".gif";
		showImage = new JLabel(new ImageIcon(myString));
		add(showImage);
		setTitle("My Image number: " + a);
		pack();
		setLocationRelativeTo(null);
		setVisible(true);
		toFront(); //show image to front.
	}
 
	public static void main(String[] args){
		/* 	Not needed anymore
		 *		System.out.println("First version:");
		 *		MyString m = new MyString();
		 * 	m.testImage();
		 */
		//second version
		System.out.println("Second version:");
		try	{
 
			for(;;){
				BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
				System.out.print("# Enter image number: ");
 
				try{
					String askNumber = br.readLine();
					//System.out.println("get: " + askNumber); Extra output not needed anymore
					int b = Integer.parseInt(askNumber);
					ChooseImage mm = new ChooseImage();
					String myString  = "c:\\" + Integer.toString(b)+".gif";
 
					f = new File("" + myString); //Check file existence before continuing.
					if (f.exists()){
						System.out.println("# loading: " + myString + "\n");
						mm.showImageGui(b);
					}
 
					else{
						System.out.println("# Image not found.\n");
					}
				}
				catch(NumberFormatException NFE){
					System.out.println("# Please enter a number");
				}
			}//end infinite forloop
		}
		catch(IOException IOE){
		}
	}
}
 
 
Created by GeSHI 1.0.7.20

Works with *.gif files but should be able to work with png or other formats.

Output:
Second version:
# Enter image number: 19
# Image not found.

# Enter image number: 1
# loading: c:\1.gif