demoframe.java

java绘图 java awt 经典绘图的例子,对于初学awt模块的人非常有帮助.

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package swing;

import java.awt.Container;
import java.awt.Dimension;
import java.awt.Toolkit;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.WindowConstants;

/**
 *
 * @author zhaolin
 */
public class DemoFrame extends JFrame{
    public DemoFrame(){
        Dimension d = Toolkit.getDefaultToolkit().getScreenSize();
        System.out.println(d.getWidth());
        System.out.println(d.getHeight());
        JButton jb = new JButton("OK");
        this.getContentPane().add(jb);
        this.pack();
        this.setAlwaysOnTop(true);
        this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
        this.setLocation(50,50);
        this.setSize((int)d.getWidth()-100,(int)d.getHeight()-100);
        this.setVisible(true);
        
    }
    
    public static void main(String[] args) {
        new DemoFrame();
    }

}