mainframe.java~2~

这是各类实用工具的源码100例

package jbufferedimagedemo;

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.awt.image.*;

public class MainFrame extends JFrame {
  private JPanel contentPane;
  private BorderLayout borderLayout1 = new BorderLayout();

  DrawCanvas canvas = new DrawCanvas();

  //Construct the frame
  public MainFrame() {
    enableEvents(AWTEvent.WINDOW_EVENT_MASK);
    try {
      jbInit();
    }
    catch(Exception e) {
      e.printStackTrace();
    }
  }
  //Component initialization
  private void jbInit() throws Exception  {
    //setIconImage(Toolkit.getDefaultToolkit().createImage(MainFrame.class.getResource("[Your Icon]")));
    contentPane = (JPanel) this.getContentPane();
    contentPane.setLayout(borderLayout1);
    this.setSize(new Dimension(400, 300));
    this.setTitle("JBufferedImageDemo");

    contentPane.add(this.canvas,BorderLayout.CENTER);
  }
  //Overridden so we can exit when window is closed
  protected void processWindowEvent(WindowEvent e) {
    super.processWindowEvent(e);
    if (e.getID() == WindowEvent.WINDOW_CLOSING) {
      System.exit(0);
    }
  }

  class DrawCanvas extends Canvas{
    Image image;
    public DrawCanvas(){
      image = this.getToolkit().getImage(ClassLoader.getSystemResource("images/image.jpg"));
      MediaTracker mt = new MediaTracker(this);
      mt.addImage(image,1);

      try{
        mt.waitForAll();
      }catch(Exception err){
        err.printStackTrace();

      }

      if (image.getWidth(this) == -1){
        System.out.println("Could not get the image");
        System.exit(-1);
      }

      this.setBackground(Color.black);

    }

    public void paint(Graphics g){
      Graphics2D g2D = (Graphics2D)g;

      BufferedImage bimage = (BufferedImage)this.createImage(this.getWidth(),this.getHeight());
      bimage.createGraphics().drawImage(this.image,0,0,this);
      g2D.drawImage(bimage,0,0,this);


      }
  }
}