myapplication.java

来自「教给你如何将JavaApplet程序转化为JavaApplication程序的一」· Java 代码 · 共 67 行

// written by : Christine Amarra
// December 15, 2004

//To use swing and graphics components
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;

//public class MyApplet extends JApplet
public class MyApplication extends JFrame 
{
	private DrawingCanvas canvas = null;
	private JButton button = null;
		
	//the main method needed for the application
	public static void main(String args[])
	{
		MyApplication frame = new MyApplication();
		frame.show();
	}

	public MyApplication()
	{
		this.init(); //calling init()

		//frame-specific calls
		this.setSize(450,450); //you have to set the size of the frame
		this.setTitle("MyApplication");
		
		this.addWindowListener(new WindowAdapter()
							   {
								   //anonymous inner class for WindowAdapter
							   		public void windowClosing( WindowEvent we )
							   		{
							   			System.exit(0);
							   		}
							   });
	}
	
	//initialize components here
	public void init()
	{
		Container c = this.getContentPane();
		
		button = new JButton("Click Me");
		c.add(button, "North");
		//The old way of doing action listeners on buttons...
		//button.addActionListener(this);
		//Don't forget to define actionPerformed();
		
		//The new way of doing action listeners on buttons...
		button.addActionListener( new ActionListener()
								{
								   //anonymous inner class for WindowAdapter
									public void actionPerformed( ActionEvent ae )
									{
										System.out.println("Clicked!");
									}
								});
		//we'll be discussing more on this next year... :)
		
		canvas = new DrawingCanvas();
		c.add(canvas);
		
	}
	
}