Java AWT工具包

本文概述

• AWT Toolkit类声明
• Java AWT工具包示例
• Java AWT Toolkit示例：beep()
• Java AWT Toolkit示例：更改TitleBar图标

Toolkit类是Abstract Window Toolkit中每个实现的抽象超类。 Toolkit的子类用于绑定各种组件。它继承了Object类。

AWT Toolkit类声明

public abstract class Toolkit extends Object

Java AWT工具包示例

import java.awt.*;
public class ToolkitExample {
  public static void main(String[] args) {
	  Toolkit t = Toolkit.getDefaultToolkit();
	  System.out.println("Screen resolution = " + t.getScreenResolution());
	  Dimension d = t.getScreenSize();
	  System.out.println("Screen width = " + d.width);
	  System.out.println("Screen height = " + d.height);
  }
}

输出：

Screen resolution = 96
Screen width = 1366
Screen height = 768

Java AWT Toolkit示例：beep()

import java.awt.event.*;
public class ToolkitExample {
public static void main(String[] args) {
	Frame f=new Frame("ToolkitExample");
	Button b=new Button("beep");
	b.setBounds(50, 100, 60, 30);
	f.add(b);	
	f.setSize(300, 300);
	f.setLayout(null);
	f.setVisible(true);
	b.addActionListener(new ActionListener(){
		public void actionPerformed(ActionEvent e){
			Toolkit.getDefaultToolkit().beep();
		}
	});		
}
}

输出：

Java AWT Toolkit示例：更改TitleBar图标

import java.awt.*; 
class ToolkitExample { 
ToolkitExample(){ 
Frame f=new Frame(); 
Image icon = Toolkit.getDefaultToolkit().getImage("D:\\icon.png");
f.setIconImage(icon);
f.setLayout(null); 
f.setSize(400, 400); 
f.setVisible(true); 
} 
public static void main(String args[]){ 
new ToolkitExample(); 
} 
}

输出：