publicclassTestextendsJFrame{privateJPanelt_1=newJPanel();privateJPanelt_0=newJPanel();privateJLabelj_1=newJLabel("题目1.");privateJLabelanwser=newJLabel("");privateButto...

public class Test extends JFrame{

private JPanel t_1=new JPanel();

private JPanel t_0=new JPanel();

private JLabel j_1=new JLabel("题目1.");

private JLabel anwser=new JLabel("");

private ButtonGroup group1 = new ButtonGroup();

private int a=0;

public Test()

{ setSize(600,600);

setTitle("单选选择题");

layoutt_1();

layoutt_0();

setLayout(new GridLayout(4,1));

add(j_1);add(t_1);

add(t_0);add(anwser);

}

private void layoutt_1()

{JRadioButton A = new JRadioButton("A.");

JRadioButton B = new JRadioButton("B.");

JRadioButton C = new JRadioButton("C.");

JRadioButton D = new JRadioButton("D.");

A.addActionListener(new ActionListener(){

public void actionPerformed(ActionEvent e){

a++;

}

});

t_1.setLayout(new GridLayout(2,2));

t_1.add(A);group1.add(A);

t_1.add(B);group1.add(B);

t_1.add(C);group1.add(C);

t_1.add(D);group1.add(D);

}

private void layoutt_0()

{

JButton button_2=new JButton("提交答案");

button_2.addActionListener(new ActionListener(){

public void actionPerformed(ActionEvent e){

anwser.setText("正确的答题数为："+a+"题");

}

}

t_0.add(button_1);

}

public static void main(String[] args)

{

Test test_1=new Test();

test_1.setVisible(true);

}

}

源代码太长被我删了很多，程序就是要求5个单选题，两个按钮：提交和重新输入，提交后显示答对题数。因为每个正确选项都有事件监听，所以运行后若先选正确选项在改为错误选项后，其显示的答对数量会比真实的多1，可是我又不知道怎么改。。。

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