如何刷新/更新/更改JFrame组件

Question

我曾尝试使用invalidate（），validate（），revalidate（），repaint（）但我的JFrame仍然不会刷新或更新或更改...我使用Thread.sleep（）添加一些延迟，但它不会工作。很抱歉，如果代码是非常糟糕的，但请与我裸...我开放的建议

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


public class GameOfLife implements MouseListener, ActionListener { 


public final int MAX_X = 10; 
public final int MAX_Y = 10; 
int[][] matrix_old = new int[MAX_X+2][MAX_Y+2]; 
int[][] matrix_new = new int[MAX_X+2][MAX_Y+2]; 


JFrame mainFrame = new JFrame(); 
    JPanel pnlheader = new JPanel(); 
    JLabel lblheader = new JLabel("Game of Life",JLabel.CENTER); 
    JLabel lblmsg = new JLabel("Please place the cells:D",JLabel.CENTER); 
    JPanel pnlgrid = new JPanel(new GridLayout(10,10)); 
    JButton btnstart = new JButton(); 


    JButton[][] grid; 

//------------------------------------------------------------------------ 


public void GameOfLife(){ 

    mainFrame.setSize(600,500); 
    mainFrame.setLayout(new BorderLayout()); 
    mainFrame.setLocationRelativeTo(null); 
    mainFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 
    mainFrame.getContentPane().setBackground(Color.WHITE); 

     pnlheader.setLayout(new GridLayout(2,1)); 
     pnlheader.add(lblheader); 
     pnlheader.add(lblmsg); 

     pnlgrid.setLayout(new GridLayout(MAX_X,MAX_Y)); 

    grid = new JButton[MAX_X+2][MAX_Y+2]; 
    for(int x = 0 ; x < (MAX_X+2) ; x++){ 
     for(int y = 0 ; y < (MAX_Y+2) ; y++){ 
       grid[x][y] = new JButton(""+x+","+y+""); 
       matrix_old[x][y] = 0 ; 
      if(y != 0 && x != 0 && y != (MAX_Y+1) && x != (MAX_X+1)){ 
        pnlgrid.add(grid[x][y]); 
          grid[x][y].setEnabled(false); 
        grid[x][y].addMouseListener(this); 
       } 
      } 
     } 


    btnstart.setText("Start Generation"); 
    mainFrame.add(pnlheader,BorderLayout.NORTH); 
    mainFrame.add(pnlgrid,BorderLayout.CENTER); 
    mainFrame.add(btnstart,BorderLayout.SOUTH); 

    btnstart.addActionListener(this); 

    mainFrame.setVisible(true); 
    }//end GameOfLife 
//------------------------------------------------------------------------ 

    public void mouseClicked(MouseEvent e){ 
      for(int x = 0 ; x < MAX_X+2 ; x++){ 
        for(int y = 0 ; y < MAX_Y+2 ; y++){ 
           if(e.getSource().equals(grid[x][y])){ 
            if(grid[x][y].isEnabled() == false){ 
             grid[x][y].setEnabled(true); 
             matrix_old[x][y] = 1; 
            } 
           else if(grid[x][y].isEnabled() == true){ 
             grid[x][y].setEnabled(false); 
             matrix_old[x][y] = 0; 
            } 
           }//end if 
        }//end for 
      }//end for 
    }//end mouseClicked 


    public void mouseEntered(MouseEvent e){} 
    public void mouseExited(MouseEvent e){} 
    public void mousePressed(MouseEvent e){} 
    public void mouseReleased(MouseEvent e){} 
//------------------------------------------------------------------------ 

public void actionPerformed(ActionEvent z){ 
    if(z.getSource() == btnstart){ 
      generation(); 
    } 
//------------------------------------------------------------------------ 

public void generation(){ 

try{ 

int checkerResult = 0; 
    for(int gene = 1 ; gene <= 10 ; gene++){ // number of generations 
      for(int rows = 0; rows < MAX_X+2 ; rows++){ //numer for row 
     for(int cols = 0 ; cols < MAX_Y+2 ; cols++){ //number for columns 
     if(matrix_old[rows][cols] == 1 && rows != 0 && cols != 0 && rows != (MAX_Y+1) && cols != (MAX_X+1) ){ // if there is a velue 
checkerResult = checker(rows,cols); 

if(checkerResult >=4 || checkerResult <=1) 
matrix_new[rows][cols]=0; 
}//end if 
else if(matrix_old[rows][cols] == 0 && rows != 0 && cols != 0 && rows != (MAX_Y+1) && cols != (MAX_X+1)){ // if there is a velue 
    checkerResult = checker(rows,cols); 
     if(checkerResult == 3) 
    matrix_new[rows][cols]=1; 
          }//end else if 
        }//end for 
       }//end for 

     exchangeValues(); 
     animateButtons(); 

     lblmsg.setText("Generation # " + gene); 


     try{ 
      Thread.sleep(100); 
     }catch(Exception E){ 
      JOptionPane.showMessageDialog(null, E); 
     } 
mainFrame.setEnabled(false); 
mainFrame.revalidate(); 
mainFrame.validate(); 
mainFrame.repaint(); 
mainFrame.setEnabled(true); 


     }//end for 
}catch(Exception X){ 
     JOptionPane.showMessageDialog(null, X); 
       } 

    }//end generation 

//------------------------------------------------------------------------ 
public int checker(int rows, int cols){ 
    int checkerResult = 0; 

    //above row 

    if(matrix_old[rows-1][cols-1]==1) 
    checkerResult++; 

    if(matrix_old[rows-1][cols]==1) 
    checkerResult++; 

    if(matrix_old[rows-1][cols+1]==1) 
    checkerResult++; 

    //same row 

    if(matrix_old[rows][cols-1]==1) 
    checkerResult++; 

    if(matrix_old[rows][cols+1]==1) 
    checkerResult++; 

    //below row 

    if(matrix_old[rows+1][cols-1]==1) 
    checkerResult++; 

    if(matrix_old[rows+1][cols]==1) 
    checkerResult++; 

    if(matrix_old[rows+1][cols+1]==1) 
    checkerResult++; 

    return checkerResult; 
    } 

//------------------------------------------------------------------------ 
public void exchangeValues(){ 
for(int rows = 0 ; rows < MAX_X+2 ; rows++){ 
    for(int cols = 0 ; cols < MAX_Y+2 ; cols++){ 
      matrix_old[rows][cols] = matrix_new[rows][cols]; 
      System.out.print(matrix_old[rows][cols]); 
     } 
     System.out.println(""); 
    } 
} 
//------------------------------------------------------------------------ 
public void animateButtons(){ 
for(int rows = 0 ; rows < MAX_X+2 ; rows++){ 
    for(int cols = 0 ; cols < MAX_Y+2 ; cols++){ 
      if(matrix_new[rows][cols] == 1){ 
        grid[rows][cols].setEnabled(true); 
       } 
      else if(matrix_new[rows][cols]== 0){ 
        grid[rows][cols].setEnabled(false); 
       } 

     } 
    } 


} 

//------------------------------------------------------------------------ 
public static void main(String [] args){ 
    GameOfLife start = new GameOfLife(); 
    start.GameOfLife(); 
    }// end main 


}//end class2 

Answer 1

使用Swing的定时器来代替了Thread.sleep（该块EDT）。类似这样的东西

ActionListener listener = new ActionListener(){ 
    public void actionPerformed(ActionEvent e){ 
     System.out.println("Hello"); 
    } 
} 

int delay = 5000; 

Timer timer = new Timer(delay, listener); 
timer.setRepeats(false); 
timer.start(); 

Timer javadoc | Timer tutorial