GUI多帧切换

Question

我正在写一个黑杰克游戏的程序.这是一项我们不会使用gui的任务,但是我正在做这个额外的功劳,我已经创建了两个框架,他们正在工作.在第二帧,我希望能够在按下按钮时切换回第一帧.我该怎么做呢？

第一窗口.............

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


public class BlackJackWindow1 extends JFrame implements ActionListener
{
  private JButton play = new JButton("Play");
  private JButton exit = new JButton("Exit");
  private JPanel pane=new JPanel();
  private JLabel lbl ;

  public BlackJackWindow1()
  {
    super();
    JPanel pane=new JPanel();
    setTitle ("Black Jack!!!!!") ;
    JFrame frame = new JFrame("");

    setVisible(true);
    setSize (380, 260) ;
    setLocation (450, 200) ;
    frame.setDefaultCloseOperation (JFrame.EXIT_ON_CLOSE) ;

    setLayout(new FlowLayout());
    play = new JButton("Start");
    exit = new JButton("exit");
    lbl = new JLabel ("Welcome to Theodores Black Jack!!!!!");

    add (lbl) ;
    add(play, BorderLayout.CENTER);
    play.addActionListener (this);
    add(exit,BorderLayout.CENTER);
    exit.addActionListener (this);
  }
  @Override
  public void actionPerformed(ActionEvent event)
  {
    // TODO Auto-generated method stub
    BlackJackWindow2 bl = new BlackJackWindow2();
    if (event.getSource() == play)
    {
      bl.BlackJackWindow2();
    }
    else if(event.getSource() == exit){
      System.exit(0);
    }
  }

第二窗口......

import javax.swing.* ;

import java.awt.event.* ;
import java.awt.* ;
import java.util.* ;

public class BlackJackWindow2 extends JFrame implements ActionListener
{
  private JButton hit ;
  private JButton stay ;
  private JButton back;
  //private JLabel lbl;

  public void BlackJackWindow2() 
  {
    // TODO Auto-generated method stub
    JPanel pane=new JPanel();
    setTitle ("Black Jack!!!!!") ;
    JFrame frame = new JFrame("");

    setVisible(true);
    setSize (380, 260) ;
    setLocation (450, 200) ;
    frame.setDefaultCloseOperation (JFrame.EXIT_ON_CLOSE) ;

    setLayout(new FlowLayout());
    hit = new JButton("Hit");  
    stay = new JButton("stay");
    back = new JButton("return to main menu");

    // add (lbl) ;
    add(hit, BorderLayout.CENTER);  
    hit.addActionListener (this) ;
    add(stay,BorderLayout.CENTER);
    stay.addActionListener (this) ;
    add(back,BorderLayout.CENTER);
    back.addActionListener (this) ;
  }

  @Override
  public void actionPerformed(ActionEvent event) 
  {
    // TODO Auto-generated method stub
    BlackJackWindow1 bl = new BlackJackWindow1();
    if (event.getSource() == hit)
    {
      //code for the game goes here i will complete later
    }
    else if(event.getSource() == stay){
      //code for game goes here i will comeplete later.
    }
    else 
    {
      //this is where i want the frame to close and go back to the original.
    }
  }
}

Answer 1

第二帧需要对第一帧的引用,以便它可以将焦点设置回第一帧.

您的类也扩展了JFrame,但它们也在其构造函数中创建了其他框架.