JProgressBar 在 actionevent 中不显示进度条

问题描述

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

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

public class Project extends JFrame implements ActionListener,ItemListener
{
    JFrame frm = new JFrame("Welcome aboard!");
    JFrame frame = new JFrame("Calculating...");
    JFrame JP = new JFrame("JACK 'N POY");
    JLabel wait = new JLabel("                Please wait for minimal seconds");
    JLabel label = new JLabel(new ImageIcon("rps1.gif"));
    JProgressBar prog = new JProgressBar(1,100);
    JPanel pane = new JPanel();
    
    JLabel lbl = new JLabel("             Welcome to Rock,Paper and Scissor!");
    JLabel icon = new JLabel(new ImageIcon("Open.gif"));
    JLabel title = new JLabel("JACK EN POY");
    JLabel pname = new JLabel();
    JLabel cname = new JLabel("Computer");
    JLabel pscore = new JLabel("Player pts: ");
    JLabel cscore = new JLabel("Computer pts: ");
    
    Font fhead = new Font("Courier",Font.BOLD,30);
    Font fPSubHead = new Font("Courier",Font.PLAIN,15);
    Font fscores = new Font("Courier",11);

    JButton btn = new JButton("GO");
    JButton btn1 = new JButton("Clear");
    JButton proceed = new JButton("Proceed");
    
    JRadioButton [] pc = new JRadioButton[3];
    JRadioButton [] cc = new JRadioButton[3];
    
    ButtonGroup pgrp = new ButtonGroup();
    ButtonGroup cgrp = new ButtonGroup();
    
    String[] choices = {"Rock","Paper","Scissor"};
    Integer[] loc = {80,110,140};
    
    String pmove,cmove,name;
    
    int p = 0,c = 0;
    
    Random rdm = new Random();
    
    public Project()
    {
        Welcome();
        setJLabel();
        setJRadio();
        setJButton();
        setJPane();
        setJFrame();
    }
    
    public void Welcome()
    {
        name = JOptionPane.showInputDialog(null,"Enter your name: ","Demographics",JOptionPane.QUESTION_MESSAGE);
        name = "" + name.toupperCase().charat(0) + name.substring(1).toLowerCase();
        pname.setText(name);
        
        frm.getContentPane().setBackground(Color.DARK_GRAY);
        frm.setDefaultCloSEOperation(JFrame.EXIT_ON_CLOSE);
        frm.setSize(300,200);
        frm.setLocation(550,300);
        frm.add(icon,BorderLayout.norTH);
        frm.add(lbl,BorderLayout.CENTER);
        frm.add(proceed,BorderLayout.soUTH);
        frm.setResizable(false);
        lbl.setForeground(Color.white);
        proceed.addActionListener(new ActionListener() 
            {
            @Override
            public void actionPerformed(ActionEvent arg0) {
                frm.dispose();
                JP.setVisible(true);
                return;
            }});
        frm.setVisible(true);
    }
    
    public void Jprog()
    {
        prog.setValue(0);
        prog.setBounds(0,100,50);
        prog.setStringPainted(true);
        prog.setBackground(Color.DARK_GRAY);
        prog.setForeground(Color.red);
        wait.setForeground(Color.WHITE);
        frame.setDefaultCloSEOperation(JFrame.disPOSE_ON_CLOSE);
        frame.setLocation(550,300);
        frame.setSize(300,190);
        frame.getContentPane().setBackground(Color.DARK_GRAY);
        frame.add(label,BorderLayout.norTH);
        frame.add(wait,BorderLayout.CENTER);
        frame.add(prog,BorderLayout.soUTH);
        frame.setVisible(true);
        fill();
        frame.dispose();
    }
    
    public void fill() 
    {
        int i=0;
    
        while(i<=100)
        {
            prog.setValue(i);
            try {
                Thread.sleep(20);
            } catch (InterruptedException e) {
                e.printstacktrace();
            }
            i+=1;
        } 
        prog.setString("Already Done!");
    }
    
    public void setJLabel()
    {
        title.setSize(200,50);
        title.setLocation(48,0);
        title.setFont(fhead);
        title.setForeground(Color.YELLOW);
        
        pname.setSize(100,30);
        pname.setLocation(30,50);
        pname.setFont(fPSubHead);
        pname.setForeground(Color.CYAN);

        cname.setSize(100,30);
        cname.setLocation(185,50);
        cname.setFont(fPSubHead);
        cname.setForeground(Color.magenta);

        pscore.setSize(150,30);
        pscore.setLocation(15,180);
        pscore.setFont(fscores);
        pscore.setText(pscore.getText() + p);
        pscore.setForeground(Color.white);

        cscore.setSize(150,30);
        cscore.setLocation(170,180);
        cscore.setFont(fscores);
        cscore.setText(cscore.getText() + c);
        cscore.setForeground(Color.white);
    }
    
    public void setJFrame()
    {
        JP.setSize(300,300);
        JP.setLocation(525,250);
        JP.setDefaultCloSEOperation(EXIT_ON_CLOSE);
        JP.setResizable(false);
        JP.getContentPane().setBackground(Color.DARK_GRAY);
        JP.add(pane);
    }
    
    public void setJRadio()
    {
        for(int i=0; i<choices.length; i++){
            pc[i] = new JRadioButton(choices[i],false);
            pc[i].setSize(80,30);
            pc[i].setLocation(20,loc[i]);
            pc[i].addItemListener(this);
            pc[i].setForeground(Color.white);
            pc[i].setBackground(Color.DARK_GRAY);

            cc[i] = new JRadioButton(choices[i],false);
            cc[i].setSize(80,30);
            cc[i].setLocation(185,loc[i]);
            cc[i].setEnabled(false);
            cc[i].setForeground(Color.white);
            cc[i].setBackground(Color.DARK_GRAY);
            
            pgrp.add(pc[i]);
            cgrp.add(cc[i]);
        }
    }

    public void setJPane()
    {
        pane.setLayout(null);
        pane.add(title);
        pane.add(pname);
        pane.add(cname);
        pane.add(pscore);
        pane.add(cscore);
        pane.setBackground(Color.DARK_GRAY);
        
        pane.add(btn);
        pane.add(btn1);
        
        for(int i=0; i<choices.length; i++)
        {
            pane.add(pc[i]);
            pane.add(cc[i]);
        }
    }
    
    public void setJButton()
    {
        btn.setSize(100,20);
        btn.setLocation(40,230);
        btn.setEnabled(false);
        
        btn1.setSize(100,20);
        btn1.setLocation(150,230);
        
        btn.addActionListener(this);
        btn1.addActionListener(this);
    }
    
    public static void main(String[] args) 
    {
        new Project();
    }
    
    public void clear()
    {
        pgrp.clearSelection();
        cgrp.clearSelection();
        btn.setEnabled(false);
    }
    
    public void Output()
    {
        if(pmove.equals("Rock") && cmove.equals("Paper"))
        {
            cscore.setText("Computer pts: " + (c+=1));
            JOptionPane.showMessageDialog(null,"Points goes to Computer!");
        }
        else if(pmove.equals("Rock") && cmove.equals("Scissor"))
        {
            pscore.setText("Player pts: " + (p+=1));
            JOptionPane.showMessageDialog(null,"Points goes to " + name + "!");
        }
        else if(pmove.equals("Paper") && cmove.equals("Rock"))
        {
            pscore.setText("Player pts: " + (p+=1));
            JOptionPane.showMessageDialog(null,"Points goes to " + name + "!");
        }
        else if(pmove.equals("Paper") && cmove.equals("Scissor"))
        {
            cscore.setText("Computer pts: " + (c+=1));
            JOptionPane.showMessageDialog(null,"Points goes to Computer!");
        }
        else if(pmove.equals("Scissor") && cmove.equals("Paper"))
        {
            pscore.setText("Player pts: " + (p+=1));
            JOptionPane.showMessageDialog(null,"Points goes to " + name + "!");
        }
        else if(pmove.equals("Scissor") && cmove.equals("Rock"))
        {
            cscore.setText("Computer pts: " + (c+=1));
            JOptionPane.showMessageDialog(null,"Points goes to Computer!");
        }
        else
        {
            JOptionPane.showMessageDialog(null,"DRAW!");
        }
        
        if(c == 5)
        {
            btn1.setEnabled(true);
            for(int j=0; j<choices.length; j++)
            pc[j].setEnabled(false);
            JOptionPane.showMessageDialog(null,"Your such a loser," + name + "!!!");
        }
        else if(p == 5)
        {
            btn1.setEnabled(true);
            for(int j=0; j<choices.length; j++)
            pc[j].setEnabled(false);
            JOptionPane.showMessageDialog(null,"Congratulations " + name + "!");
        }
        clear();
    }
    
    public void actionPerformed(ActionEvent ae)
    {
        if(ae.getSource() == btn)
        {
            int i = rdm.nextInt(3);
            cc[i].setSelected(true);
            cmove = cc[i].getActionCommand();
            Jprog();
            Output();
        }
        else
        {
            clear();
            p = c = 0;
            
            for(int i=0;i<choices.length; i++)
                pc[i].setEnabled(true);
            
            cscore.setText("Computer pts: " + c);
            pscore.setText("Player pts: " + p);
        }
    }
        
    public void itemStateChanged(ItemEvent ie)
    {
        for(int i=0; i<choices.length; i++)
        {
            if(pc[i].isSelected())
            {
                pmove = pc[i].getActionCommand();
                btn.setEnabled(true);
            }
        }
    }
}

我很困惑为什么它没有显示。它只显示一个空白帧，但它的工作方式就像一个进度条，在给定的时间执行后，它会处理。它只显示在动作事件之外时，但这样做时，我无法实现我想要的。 JProgressBar 函数是 Jprog()。

解决方法

暂无找到可以解决该程序问题的有效方法，小编努力寻找整理中！

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