各位大虾，小弟最近做java的课程大作业，遇到一个问题，就是创建了JRadioButton english，math...
然后，创建了一个JmenuItem sort，我想设置JRadioButton的初始可选性是不可选的，在点击了sort后，JRadioButton才变为可选的，请问这个设置JRadioButton的初始可选性的函数是什么啊！不胜感激！！
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jradio.setEnabled(false);
jradio.setEnabled(true);
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setEnable(false)
setEnable(true)
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这是一个具体的实例
- Java code
public class JRadioButtonDemo1 extends JFrame { private boolean isEnable=false; private final ButtonGroup genderGroup=new ButtonGroup(); private JRadioButton boyBtn=null; private JRadioButton girlBtn=null; public JRadioButtonDemo1(){} public JRadioButtonDemo1(String title){ super(title); boyBtn=new JRadioButton("boy"); girlBtn=new JRadioButton("girl"); genderGroup.add(boyBtn); genderGroup.add(girlBtn); Enumeration<AbstractButton> btns=genderGroup.getElements(); while(btns.hasMoreElements()){ AbstractButton btn=btns.nextElement(); btn.setEnabled(JRadioButtonDemo1.this.isEnable); } this.getContentPane().setLayout(new FlowLayout()); this.getContentPane().add(boyBtn); this.getContentPane().add(girlBtn); final JButton radioCtl=new JButton("enable"); radioCtl.addActionListener(new ActionListener(){ @Override public void actionPerformed(ActionEvent e) { //To change body of implemented methods use File | Settings | File Templates. if(JRadioButtonDemo1.this.isEnable){ radioCtl.setText("enable"); }else{ radioCtl.setText("disable"); } JRadioButtonDemo1.this.isEnable=!JRadioButtonDemo1.this.isEnable; Enumeration<AbstractButton> btns=genderGroup.getElements(); while(btns.hasMoreElements()){ AbstractButton btn=btns.nextElement(); btn.setEnabled(JRadioButtonDemo1.this.isEnable); } } }); this.getContentPane().add(radioCtl); girlBtn.addActionListener(new ActionListener(){ @Override public void actionPerformed(ActionEvent arg0) { // TODO Auto-generated method stub// genderGroup.getSelection().g System.out.println(girlBtn.getText()); System.out.println("girlBtn is selected is "+girlBtn.isSelected()); } }); boyBtn.addActionListener(new ActionListener(){ @Override public void actionPerformed(ActionEvent arg0) { // TODO Auto-generated method stub System.out.println(boyBtn.getText()); System.out.println("boyBtn is selected is "+boyBtn.isSelected()); } }); this.pack(); this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); this.setLocationRelativeTo(null); this.setVisible(true); } public static void main(String[] args){ new JRadioButtonDemo1("Demo"); }}