Question

在以下java消息框示例应用程序中，“确定”按钮显示为三个点（...）。它在JDK 6.0上正常运行。但是JDK 7.0上出现了这个问题。如何解决这个问题？

Jave源代码：

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

public class ShowDialogBox{
  JFrame frame;
  public static void main(String[] args){
  ShowDialogBox db = new ShowDialogBox();
  }

  public ShowDialogBox(){
  frame = new JFrame("Show Message Dialog");
  JButton button = new JButton("Click Me");
  button.addActionListener(new MyAction());
  frame.setLayout(new FlowLayout());
  frame.add(button);
  frame.setSize(400, 400);
  frame.setVisible(true);
  frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
  }

  public class MyAction implements ActionListener{
  public void actionPerformed(ActionEvent e){
  JOptionPane.showMessageDialog(frame,"Eggs are not supposed to be green.","Inane warning",JOptionPane.WARNING_MESSAGE);
  }
  }
}

Answer 1

试试这个：

import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JOptionPane;

public class ShowDialogBox {

    private JFrame frame;

    public static void main(String[] args) {
        ShowDialogBox box = new ShowDialogBox();
    }

    public ShowDialogBox() {
        frame = new JFrame("Show Message Dialog");
        JButton button = new JButton("Click Me");
        button.addActionListener(new MyAction());
        frame.setLayout(new FlowLayout());
        frame.add(button);
        frame.setSize(400, 400);
        frame.setVisible(true);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    }

    class MyAction implements ActionListener {

        @Override
        public void actionPerformed(ActionEvent arg0) {
            JOptionPane.showConfirmDialog(frame,
                    "Eggs are not supposed to be green.", "Inane warning",
                    JOptionPane.DEFAULT_OPTION, JOptionPane.WARNING_MESSAGE);
        }
    }
}

Answer 2

使用JDK 7.0，它对我来说很好。请确保您的JDK没有损坏。

确定按钮消息框错误 - 字符串被截断

2 个答案: