enter coclass Gamehandler extends JFrame implements ActionListener {
//questions
JPanel qpanel = new JPanel();
//answers
JPanel aPanel = new JPanel();
JRadioButton[] responses;
ButtonGroup group = new ButtonGroup();
//bottom
JPanel botPanel = new JPanel();
JButton next = new JButton("next");
JButton finish = new JButton("Finish");
static String guess= " ";
readExcel re = new readExcel();
JLabel label = new JLabel();
public void actionPerformed(ActionEvent event) {
re.readExcel1();
Random rm = new Random();
int radiobuttonsize = readExcel.ColumnTwo.size();
radioButtons rbs = new radioButtons();
scoreTest sr = new scoreTest();
responses = new JRadioButton[readExcel.ColumnTwo.size()];
//adds my radio buttons
//adds action listeneners
//adds get actions
for(int i=0;i<readExcel.ColumnTwo.size();i++){
responses[i]=new JRadioButton(readExcel.ColumnTwo.get(i));
group.add(responses[i]);
aPanel.add(responses[i]);
responses[i].addActionListener(rbs);
responses[i].setActionCommand (String.valueOf(i));
Object selection = responses[0].getAction();
}
int randomguessArray = rm.nextInt(radiobuttonsize);
guess = readExcel.ColumnOne.get(randomguessArray);
label = new JLabel();
label.setText(guess);
qpanel.add(label);
JFrame frame = new JFrame("Test");
frame.setSize(400, 300);
frame.setResizable(true);
frame.setVisible(true);
frame.add(aPanel);
botPanel.add(next);
botPanel.add(finish);
frame.getContentPane().add(qpanel,BorderLayout.NORTH);
frame.getContentPane().add(aPanel,BorderLayout.CENTER);
frame.getContentPane().add(botPanel,BorderLayout.SOUTH);
next.addActionListener(sr);
}
public void changeText(){
label.setText("Work");
System.out.print("hello");
}
我只想在我的 JButton 中添加一个动作监听器，然后能够在我的同一个框架中更改 JLabel。这是我的程序的关键部分。这似乎很简单，老实说我无法弄清楚。也许是因为现在是凌晨 3 点 53 分，而我只工作了 8 个小时。我很想对我的代码有一双新的眼睛。