用java实现简易推箱子代码

package yan04;

import java.awt.Button;
import java.awt.Color;
import java.awt.Label;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;

import javax.swing.JFrame;

public class MoveBox extends JFrame implements KeyListener,ActionListener {
    Label label=new Label("单击一个积木，然后移动它");
    Button b[]=new Button[40];
    int x[]=new int[40];
    int y[]=new int[40];
    int k1=70,k2=70,k3=70,k4=70;
    String s="";
    public MoveBox() {
        super("Move Box");
        setLayout(null);
        add(label);
        label.setBounds(0,0,150,30);
        for(int i=0;i<40;i++)
        {
            b[i]=new Button(String.valueOf(i));
            if(i%3==0) b[i].setBackground(Color.red);
            if(i%3==1) b[i].setBackground(Color.blue);
            if(i%3==2) b[i].setBackground(Color.yellow);
            b[i].addKeyListener(this);
            b[i].addActionListener(this);
            add(b[i]);
            if(i%4==0) {
                b[i].setBounds(k1,40,30,30);k1=k1+31;
            }else if(i%4==1) {
                b[i].setBounds(k1,71,30,30);k2=k2+31;
            }else if(i%4==2) {
                b[i].setBounds(k1,102,30,30);k2=k3+31;
            }else if(i%4==3) {
                b[i].setBounds(k1,133,30,30);k2=k4+31;
            }
        }
        for(int i=0;i<40;i++)
        {
            x[i]=b[i].getBounds().x;
            y[i]=b[i].getBounds().y;
        }
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setSize(600,400);
        setVisible(true);
    }
    @Override
    public void actionPerformed(ActionEvent e) {
        for(int i=0;i<40;i++)
        {
            if(e.getSource()==b[i])
                s=b[i].getLabel();
        }    
    }

    @Override
    public void keyTyped(KeyEvent e) {
        
        
    }

    @Override
    public void keyPressed(KeyEvent e) {
        if(e.getKeyCode()==KeyEvent.VK_UP) {
            for(int i=0;i<=39;i++)
            {
                if(s.equals(String.valueOf(i))) {
                    y[i]=y[i]-2;
                    if(y[i]<=0) y[i]=0;
                    b[i].setLocation(x[i],y[i]);
                }
            }
        }else if(e.getKeyCode()==KeyEvent.VK_DOWN) {
            for(int i=0;i<=39;i++)
            {
                if(s.equals(String.valueOf(i))) {
                    y[i]=y[i]+2;
                    if(y[i]>=280) y[i]=280;
                    b[i].setLocation(x[i],y[i]);
                }
            }
        }else if(e.getKeyCode()==KeyEvent.VK_LEFT) {
            for(int i=0;i<=39;i++)
            {
                if(s.equals(String.valueOf(i)))
                {
                    x[i]=x[i]-2;
                    if(x[i]<=0) x[i]=0;
                    b[i].setLocation(x[i],y[i]);
                }
            }
        }
        
    }

    @Override
    public void keyReleased(KeyEvent e) {
        
        
    }
    public static void main(String args[]) {
        new MoveBox();
    }

}