将J帧转换为JApplet

Question

我创建了一个java代码（jframe），但我试图将它转换为applet，以便它可以出现在html网页上。由于我对Java编码不太熟悉，因此遇到了困难。

这是迄今为止代码：

/** 
    * Implements a program with a pie chart 
* that shows interactive polling results for three candidates 
*/ 

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

    public class Poll extends JApplet { 

     public void init() { 
public Poll() 
    { 

super("Vote for Pat, Ismail, or Clair"); 
Container c = getContentPane(); 
c.setBackground(Color.WHITE); 
PollDisplayPanel chart = new PollDisplayPanel("Pat", "Ismail", "Clair"); 
PollControlPanel controls = new PollControlPanel(chart); 
c.add(chart, BorderLayout.CENTER); 
c.add(controls, BorderLayout.SOUTH); 

Poll w = new Poll(); 
} 



     } 
     } 

这是原来的JFrame代码

/** 
* Implements a program with a pie chart 
* that shows interactive polling results for three candidates 
*/ 

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

    public class Poll extends JFrame 
{ 
public Poll() 
    { 
    super("Vote for Pat, Ismail, or Clair"); 

Container c = getContentPane(); 
c.setBackground(Color.WHITE); 
PollDisplayPanel chart = new PollDisplayPanel("Pat", "Ismail", "Clair"); 
PollControlPanel controls = new PollControlPanel(chart); 
c.add(chart, BorderLayout.CENTER); 
c.add(controls, BorderLayout.SOUTH); 
    } 

    public static void main(String[] args) 
    { 
Poll w = new Poll();} 
    w.setBounds(300, 300, 400, 400); 
w.setDefaultCloseOperation(EXIT_ON_CLOSE); 
w.setVisible(true); 
    } 
    } 

Answer 1

不能直接定义内的​​另一个方法。在这里你已经做了相同的小程序。在init()内部，您正在添加构造函数Poll()。

public void init() { 

public Poll() { 
    super("Vote for Pat, Ismail, or Clair"); 

Container c = getContentPane(); 
    c.setBackground(Color.WHITE); 
    PollDisplayPanel chart = new PollDisplayPanel("Pat", "Ismail", "Clair"); 
    PollControlPanel controls = new PollControlPanel(chart); 
    c.add(chart, BorderLayout.CENTER); 
    c.add(controls, BorderLayout.SOUTH); 

 Poll w = new Poll(); 
    } 

}