如何列出页面上的所有小程序

悠悠 2023-02-15 07:49 15阅读 0赞

“ **getAppletContext（）。getApplets（）** ”方法将返回“ Enumeration”对象，该对象包含页面上所有已加载的Applet。

## 例 ##

此示例包含一个按钮，单击后将列出页面上的所有小程序，并逐行显示在文本区域中。

package com.mkyong.applet;
    
    import java.applet.Applet;
    import java.awt.Button;
    import java.awt.TextArea;
    import java.awt.event.ActionEvent;
    import java.awt.event.ActionListener;
    import java.util.Enumeration;
    
    public class AppletExample1 extends Applet implements ActionListener {
    
    	Button button;
    	TextArea textBox;
    	
    	public void init(){
    		button = new Button("List All applets Name");
    		button.setActionCommand("CHANGEME");
    		button.addActionListener(this);
    		add(button);
    		
         	        textBox = new TextArea(5,40);
    	        add(textBox);
    	}
    
    	@Override
    	public void actionPerformed(ActionEvent e) {
    		if(e.getActionCommand().equals("CHANGEME")){
    
    		    Enumeration applets = getAppletContext().getApplets();
    		    
    		    while (applets.hasMoreElements()) {
    		    	
    		        Applet applet = (Applet)applets.nextElement();
    		        String info = ((Applet)applet).getAppletInfo();
    			textBox.append("- " + applet.getClass().getName() + "\n");
    		         
    		    }
    		}
    	}
    }

标签： [小程序][Link 1]

> 翻译自: [https://mkyong.com/applet/how-to-list-out-all-the-applets-on-a-page/][https_mkyong.com_applet_how-to-list-out-all-the-applets-on-a-page]

[Link 1]: https://mkyong.com/tag/applet/
[https_mkyong.com_applet_how-to-list-out-all-the-applets-on-a-page]: https://mkyong.com/applet/how-to-list-out-all-the-applets-on-a-page/