Membuat Program Paint Menggunakan Java

Saya akan membantu anda membuat program paint sederhana menggunakan java,..

Silakan copas coding di bawah ini ke Netbeans

/*
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 */

package paint;

/**
 *
 * @author rizal
 */
import java.awt.*;

import java.awt.event.*;

import javax.swing.*;

public class Main {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        // TODO code application logic here



        Icon iconB = new ImageIcon("blue.gif");

        //the blue image icon

        Icon iconM = new ImageIcon("magenta.gif");

        //magenta image icon

        Icon iconR = new ImageIcon("red.gif");

        //red image icon

        Icon iconBl = new ImageIcon("black.gif");

        //black image icon

        Icon iconG = new ImageIcon("green.gif");

        //finally the green image icon

        //These will be the images for our colors.



        JFrame frame = new JFrame("coreet-coreettt");

        //Creates a frame with a title of "Paint it"



        Container content = frame.getContentPane();

        //Creates a new container

        content.setLayout(new BorderLayout());

        //sets the layout



        final PadDraw drawPad = new PadDraw();

        //creates a new padDraw, which is pretty much the paint program



        content.add(drawPad, BorderLayout.CENTER);

        //sets the padDraw in the center



        JPanel panel = new JPanel();

        //creates a JPanel

        panel.setPreferredSize(new Dimension(32, 68));

        panel.setMinimumSize(new Dimension(32, 68));

        panel.setMaximumSize(new Dimension(32, 68));

        //This sets the size of the panel



        JButton clearButton = new JButton("Clear");

        //creates the clear button and sets the text as "Clear"

        clearButton.addActionListener(new ActionListener(){

            public void actionPerformed(ActionEvent e){

                drawPad.clear();

            }

        });

        //this is the clear button, which clears the screen.  This pretty

        //much attaches an action listener to the button and when the

        //button is pressed it calls the clear() method


        JButton redButton = new JButton(iconR);

        //creates the red button and sets the icon we created for red

        redButton.addActionListener(new ActionListener(){

            public void actionPerformed(ActionEvent e){

                drawPad.red();

            }

        });

        //when pressed it will call the red() method.  So on and so on =]


        JButton blackButton = new JButton(iconBl);

        //same thing except this is the black button

        blackButton.addActionListener(new ActionListener(){

            public void actionPerformed(ActionEvent e){

                drawPad.black();

            }

        });


        JButton magentaButton = new JButton(iconM);

        //magenta button

        magentaButton.addActionListener(new ActionListener(){

            public void actionPerformed(ActionEvent e){

                drawPad.magenta();

            }

        });


        JButton blueButton = new JButton(iconB);

        //blue button

        blueButton.addActionListener(new ActionListener(){

            public void actionPerformed(ActionEvent e){

                drawPad.blue();

            }

        });


        JButton greenButton = new JButton(iconG);

        //green button

        greenButton.addActionListener(new ActionListener(){

            public void actionPerformed(ActionEvent e){

                drawPad.green();

            }

        });

        blackButton.setPreferredSize(new Dimension(16, 16));

        magentaButton.setPreferredSize(new Dimension(16, 16));

        redButton.setPreferredSize(new Dimension(16, 16));

        blueButton.setPreferredSize(new Dimension(16, 16));

        greenButton.setPreferredSize(new Dimension(16,16));

        //sets the sizes of the buttons


        panel.add(greenButton);

        panel.add(blueButton);

        panel.add(magentaButton);

        panel.add(blackButton);

        panel.add(redButton);

        panel.add(clearButton);

        //adds the buttons to the panel


        content.add(panel, BorderLayout.WEST);

        //sets the panel to the left


        frame.setSize(300, 300);

        //sets the size of the frame

        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        //makes it so you can close

        frame.setVisible(true);

        //makes it so you can see it

    }

}

class PadDraw extends JComponent{

    Image image;

    //this is gonna be your image that you draw on

    Graphics2D graphics2D;

    //this is what we'll be using to draw on

    int currentX, currentY, oldX, oldY;

    //these are gonna hold our mouse coordinates


    //Now for the constructors

    public PadDraw(){

        setDoubleBuffered(false);

        addMouseListener(new MouseAdapter(){

            public void mousePressed(MouseEvent e){

                oldX = e.getX();

                oldY = e.getY();

            }

        });

        //if the mouse is pressed it sets the oldX & oldY

        //coordinates as the mouses x & y coordinates

        addMouseMotionListener(new MouseMotionAdapter(){

            public void mouseDragged(MouseEvent e){

                currentX = e.getX();

                currentY = e.getY();

                if(graphics2D != null)

                graphics2D.drawLine(oldX, oldY, currentX, currentY);

                repaint();

                oldX = currentX;

                oldY = currentY;

            }

        });

        //while the mouse is dragged it sets currentX & currentY as the mouses x and y

        //then it draws a line at the coordinates

        //it repaints it and sets oldX and oldY as currentX and currentY

    }

    public void paintComponent(Graphics g){

        if(image == null){

            image = createImage(getSize().width, getSize().height);

            graphics2D = (Graphics2D)image.getGraphics();

            graphics2D.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);

            clear();

        }

        g.drawImage(image, 0, 0, null);

    }

    //this is the painting bit

    //if it has nothing on it then

    //it creates an image the size of the window

    //sets the value of Graphics as the image

    //sets the rendering

    //runs the clear() method

    //then it draws the image


    public void clear(){

        graphics2D.setPaint(Color.white);

        graphics2D.fillRect(0, 0, getSize().width, getSize().height);

        graphics2D.setPaint(Color.black);

        repaint();

    }

    //this is the clear

    //it sets the colors as white

    //then it fills the window with white

    //thin it sets the color back to black

    public void red(){

        graphics2D.setPaint(Color.red);

        repaint();

    }

    //this is the red paint

    public void black(){

        graphics2D.setPaint(Color.black);

        repaint();

    }

    //black paint

    public void magenta(){

        graphics2D.setPaint(Color.magenta);

        repaint();

    }

    //magenta paint

    public void blue(){

        graphics2D.setPaint(Color.blue);

        repaint();

    }

    //blue paint

    public void green(){

        graphics2D.setPaint(Color.green);

        repaint();

    }

    //green paint


}

Maka outputnya akan tampil seperti ini