當我選擇單選按鈕

Question

我如何執行Java程序時，我選擇單選按鈕

class abc implements ActionListener { 
    public static void main (String args[]){ 

     JFrame frame = new JFrame("Test Frame"); 
     JPanel panel = new JPanel(); 
     Container contpane; contpane = frame.getContentPane(); 

     //added all Radio Buttons 
     JRadiobutton jb = new 
     JRadioButton("test1"); JRadiobutton 
     jb1 = new JRadioButton("test2"); 
     jb.addActionListener(this); 
     jb.addActionListener(this);//when i say "this" it is giving complie time 
        error becaus this keyword will not be accesible 

     } 

     public void actionPerformed(ActionEvent evt){ 

    How do i create the JTextArea and 
    Execute the Java class abc.java in 
    that JTextArea How do i add the 
    JTextArea to the panel and Frame 

    what should i write inorder to execute 
    the java class say abc.java 


    } 
    } 

Answer 1

要回答你的第一個問題，我要如何執行Java程序，重組你的代碼來創建框架和它是你的班級的構造這樣的內容

class abc implements ActionListener { 
    public static void main(String args[]) { 

     new abc(); 
    } 

    abc() { 
     JFrame frame = new JFrame("Test Frame"); 
     JPanel panel = new JPanel(); 
     Container contpane; 
     contpane = frame.getContentPane(); 

     // added all Radio Buttons 
     JRadiobutton jb = new JRadioButton("test1"); 
     JRadiobutton jb1 = new JRadioButton("test2"); 
     jb.addActionListener(this); 
     jb.addActionListener(this); 

    } 

    public void actionPerformed(ActionEvent evt) { 

    } 
} 

我不明白其他問題。