Program menampilkan gambar di java netbeans

 A.      Kode Program

memasukan gambar:

import java.awt.Canvas;

import java.awt.Graphics;

import java.awt.Image;

import java.awt.Toolkit;

public class tugasfoto extends javax.swing.JFrame {

String one="src/foto/gambar1.jpg";

Image gb1=Toolkit.getDefaultToolkit().getImage(one);

String two="src/foto/gambar2.jpg";

Image gb2=Toolkit.getDefaultToolkit().getImage(two);

String three="src/foto/gambar3.jpg";

Image gb3=Toolkit.getDefaultToolkit().getImage(three);

int l=100;

int t=80;

Image satu;

1.       Tombol Besarkan

private void besarActionPerformed(java.awt.event.ActionEvent evt) {                                     

 Graphics g=canvas1.getGraphics();

        g.setColor(canvas1.getBackground());

        g.fillRect(1,1,canvas1.getWidth()-1,canvas1.getHeight()-1);

        g.drawImage(img,10,10,l,t,this);

        l=l+55;

        t=t+44;

        // TODO add your handling code here:

    }                

                   

2.       Tombol Kecilkan

private void kecilActionPerformed(java.awt.event.ActionEvent evt) {                                     

  Graphics g=canvas1.getGraphics();

        g.setColor(canvas1.getBackground());

        g.fillRect(1,1,canvas1.getWidth()-1,canvas1.getHeight()-1);

g.drawImage(img,10,10,l,t,this);

        l=l-55;

        t=t-44;

        // TODO add your handling code here:

    }                                    

3.       Tombol tampil

private void tampilActionPerformed(java.awt.event.ActionEvent evt) {                                       

   Graphics g=canvas1.getGraphics();

     g.setColor(canvas1.getBackground());

     if(pilihan.getSelectedItem()== "gambar 1")

     {img=gb;

      g.fillRect(1,1,canvas1.getWidth()-1,canvas1.getHeight()-1);

     g.drawImage(gb,0,0,this);

     }

else

      if(pilihan.getSelectedItem()== "gambar 2")

     {img=gb2;

      g.fillRect(1,1,canvas1.getWidth()-1,canvas1.getHeight()-1);

     g.drawImage(gb2,0,0,this);

     }

else

      if(pilihan.getSelectedItem()== "gambar 3")

     {img=gb3;

      g.fillRect(1,1,canvas1.getWidth()-1,canvas1.getHeight()-1);

     g.drawImage(gb3,0,0,this);         

     }

        // TODO add your handling code here:

    } 

4.       Tombol Sembunyi

private void sembunyiActionPerformed(java.awt.event.ActionEvent evt) {                                         

 Graphics g=canvas1.getGraphics();

        g.setColor(canvas1.getBackground());

        g.fillRect(1,1,canvas1.getWidth()-1,canvas1.getHeight()-1);

        // TODO add your handling code here:

    } 

5.       Combo Box

private void pilihanActionPerformed(java.awt.event.ActionEvent evt) {                                       

        // TODO add your handling code here:

    }   

hasil runing :