如何使Jbutton可单击并显示文本

Question

我试图创建一个可单击的图像JButton并在单击它后显示文本，但是我似乎无法弄清楚如何使其工作。 我对Java很陌生，因此大量的基本解释对我很有帮助。 这是我目前正在使用的代码。

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

public class States extends JFrame {
  private JTabbedPane jtpFigures = new JTabbedPane();


  //State Labels


    private JButton VTPanel = new JButton();
     frame.add(VTPanel);
  VTPanel.addActionListener(new ActionListener(){
    public void actionPerformed(ActionEvent);
    System.out.println("The State Capital of VT is Montpelier");
}



  private JButton NYPanel = new JButton();
  private JButton CAPanel = new JButton();
  private JButton MEPanel = new JButton();
  private JButton NHPanel = new JButton();
  private JButton CTPanel = new JButton();
  private JButton MAPanel = new JButton();
  private JButton FLPanel = new JButton();
  private JButton HIPanel = new JButton();
  private JButton NDPanel = new JButton();

  //Images for each of the states
  private ImageIcon[] stateImage = {
    new ImageIcon("image/VT.png"),
    new ImageIcon("image/NY.png"),
    new ImageIcon("image/CA.png"),
    new ImageIcon("image/ME.png"),
    new ImageIcon("image/NH.png"),
    new ImageIcon("image/CT.png"),
    new ImageIcon("image/MA.png"),
    new ImageIcon("image/FL.png"),
    new ImageIcon("image/HI.png"),
    new ImageIcon("image/ND.png")};



    public States() {

        //adds each of the images to the panel
        VTPanel.setIcon(stateImage[0]);
        NYPanel.setIcon(stateImage[1]);
        CAPanel.setIcon(stateImage[2]);
        MEPanel.setIcon(stateImage[3]);
        NHPanel.setIcon(stateImage[4]);
        CTPanel.setIcon(stateImage[5]);
        MAPanel.setIcon(stateImage[6]);
        FLPanel.setIcon(stateImage[7]);
        HIPanel.setIcon(stateImage[8]);
        NDPanel.setIcon(stateImage[9]);



    //Adds the panels and name
        add(jtpFigures, BorderLayout.CENTER);
        jtpFigures.add(VTPanel, "Vermont");
        jtpFigures.add(NYPanel, "New York");
        jtpFigures.add(CAPanel, "California");
        jtpFigures.add(MEPanel, "Maine");
        jtpFigures.add(NHPanel, "New Hampshire");
        jtpFigures.add(CTPanel, "Connecticut");
        jtpFigures.add(MAPanel, "Massachusetts");
        jtpFigures.add(FLPanel, "Florida");
        jtpFigures.add(HIPanel, "Hawaii");
        jtpFigures.add(NDPanel, "North Dakota");


        //Sets the default index
        jtpFigures.setSelectedIndex(3);
    }


    public static void main(String[] args) {
        States frame = new States();
        frame.pack();
        frame.setTitle("State License Plates");
        frame.setLocationRelativeTo(null); // Center the frame
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setVisible(true);
        frame.setSize(560,250);

    }
}

Answer 1

您将需要在按钮上添加一个动作监听器。 这里有很好的参考： http : //docs.oracle.com/javase/tutorial/uiswing/events/actionlistener.html