Java图形界面基础案例-怎么画乌龟

来源：互联网发布：卡刀宏软件编辑：程序博客网时间：2024/06/10 04:41

对于上一次的乌龟的设计不知道给位完成的怎么样，没有写出来也没有关系。下面我来展示一下设计的乌龟和代码

import java.awt.*;public class Turtle{    {    public static void main(String[] args)    {        Frame w = new Frame() ;        w.setSize(1366, 768) ;        w.setBackground(Color.LIGHT_GRAY);        MyPanel mp = new MyPanel();        w.add(mp);        w.show();}class MyPanel extends Panel{    int x = 100, y = 400 ,x1 = 400 ,x2 = 700, x3 = 1000;    int j1 = 400 , k1 = 100 ;    int j2 = 400 , k2 = 100 ;    int j3 = 400 , k3 = 100 ;    int j4 = 400 , k4 = 100 ;    public void paint(Graphics g)    {        g.setColor(Color.getHSBColor(169, 40, 3));        g.fillOval(x, y, 70, 100);        g.setColor(Color.BLACK);        g.fillOval(x+10, y+30, 10, 10);        g.fillOval(x+50, y+30, 10, 10);        g.setColor(Color.getHSBColor(169, 40, 3));        g.fillOval(x, y+290, 60, 80);        g.setColor(Color.LIGHT_GRAY);        g.fillOval(x+20, y+300, 60, 80);        g.setColor(Color.getHSBColor(169, 40, 3));        g.fillOval(k1-85, j1+70, 70, 70);    100               g.setColor(Color.getHSBColor(169, 40, 3));        g.fillOval(k2+85, j2+70, 70, 70);         g.setColor(Color.getHSBColor(169, 40, 3));        g.fillOval(k3-80, j3+235, 70, 70);               g.setColor(Color.getHSBColor(169, 40, 3));        g.fillOval(k4+80, j4+235, 70, 70);        g.setColor(Color.GREEN);        g.fillOval(x-66, y+69, 200, 230);        g.setColor(Color.black);        g.drawOval(x-65, y+70, 200, 230);        g.setColor(Color.black);//πÍ∏«        g.drawLine(x+5, y+130, x+75, y+130);        g.drawLine(x-10, y+82, x+5, y+130);        g.drawLine(x+75, y+130, x+100, y+95);        g.drawLine(x-67,y+200,x+135,y+200);        g.drawLine(x+5,y+250,x+75,y+250);        g.drawLine(x+5,y+250,x-20,y+278);        g.drawLine(x+100,y+275,x+75,y+250);        g.drawLine(x+40, y+70, x+40, y+300);    }}

看一下在Eclipse里运行的结果
这里写图片描述
由于代码的实现很简单，所以博主没有写上备注，有不明白的地方可以来问博主。基本就是在paint这个方法里加一些图形和上色。
博主第一次做这个乌龟的时候觉得这个静止的乌龟不好玩，自学了监听方面的只是对这个代码进行立刻修改，楼主把代码放上，感兴趣的可以先提前去了解监听方面的知识

    import java.awt.*;import java.awt.event.*;public class TurtleMove{    public static void main(String[] args)    {        //设置窗体        Frame w = new Frame() ;        w.setSize(1366, 768) ;        w.setBackground(Color.LIGHT_GRAY);        //添加画布        MyWuGuiPa mp = new MyWuGuiPa();        w.add(mp);        //注册键盘事件        w.addKeyListener(mp) ;        mp.addKeyListener(mp) ;        //注册鼠标事件        w.addMouseListener(mp) ;        mp.addMouseListener(mp) ;        //显示        w.show() ;    }}class TurtleMove extends Panel implements KeyListener,MouseListener{            //定义乌龟起始位置            int x = 100, y = 400 ,x1 = 400 ,x2 = 700, x3 = 1000;            //定义乌龟四只脚的变量 j是脚的y轴变量用来控制上下移动 k是脚的x轴的变量用来控制左右移动            int j1 = 400 , k1 = 100 ;            int j2 = 400 , k2 = 100 ;            int j3 = 400 , k3 = 100 ;            int j4 = 400 , k4 = 100 ;            //定义乌龟行动规则             int f = 0 ;    public void paint(Graphics g)    {        //乌龟的头        g.setColor(Color.getHSBColor(169, 40, 3));        g.fillOval(x, y, 70, 100);        g.setColor(Color.BLACK);        g.fillOval(x+10, y+30, 10, 10);        g.fillOval(x+50, y+30, 10, 10);        //龟尾巴        g.setColor(Color.getHSBColor(169, 40, 3));        g.fillOval(x, y+290, 60, 80);        g.setColor(Color.LIGHT_GRAY);        g.fillOval(x+20, y+300, 60, 80);        //乌龟左上腿        g.setColor(Color.getHSBColor(169, 40, 3));        g.fillOval(k1-85, j1+70, 70, 70);        //乌龟右上腿       100               g.setColor(Color.getHSBColor(169, 40, 3));        g.fillOval(k2+85, j2+70, 70, 70);        //乌龟左下腿      100            g.setColor(Color.getHSBColor(169, 40, 3));        g.fillOval(k3-80, j3+235, 70, 70);        //乌龟右下腿                   g.setColor(Color.getHSBColor(169, 40, 3));        g.fillOval(k4+80, j4+235, 70, 70);        //龟盖        g.setColor(Color.GREEN);        g.fillOval(x-66, y+69, 200, 230);        g.setColor(Color.black);        g.drawOval(x-65, y+70, 200, 230);        g.setColor(Color.black);//龟盖        //龟纹        g.drawLine(x+5, y+130, x+75, y+130);        g.drawLine(x-10, y+82, x+5, y+130);        g.drawLine(x+75, y+130, x+100, y+95);        g.drawLine(x-67,y+200,x+135,y+200);        g.drawLine(x+5,y+250,x+75,y+250);        g.drawLine(x+5,y+250,x-20,y+278);        g.drawLine(x+100,y+275,x+75,y+250);        g.drawLine(x+40, y+70, x+40, y+300);    }    @Override    public void keyTyped(KeyEvent e) {        // TODO Auto-generated method stub    }    @Override    public void keyPressed(KeyEvent e)     {        if(e.getKeyCode() == KeyEvent.VK_UP&&j1>0)        {            //定义乌龟向上移动 f==0时候 左上脚和右下脚向前东            // f==1时  右上脚和左下脚向前动            y = y - 10 ;            if(f == 0)            {                j1 = j1 - 20 ;                j4 = j4 - 20 ;            }            if(f == 1)            {                j2 = j2 -20 ;                j3 = j3 -20 ;            }            if(j1 >= j2)            {                f = 0 ;            }            if(j1 < j2)            {                f = 1 ;            }        }        if(e.getKeyCode() == KeyEvent.VK_DOWN&&j4<400)        {            //定义乌龟向下移动 移动规则与向上移动一样            y = y + 10 ;            if(f == 0)            {                j1 = j1 + 20 ;                j4 = j4 + 20 ;            }            if(f == 1)            {                j2 = j2 + 20 ;                j3 = j3 + 20 ;            }            if(j1 <= j2)            {                f = 0 ;            }            if(j1 > j2)            {                f = 1 ;            }        }        if(e.getKeyCode() == KeyEvent.VK_LEFT&&k1>80)        {            //定义乌龟 向左移动 f==0时候 左上和左下脚向左移动            //f==1时候 右上和右下向左移动            x = x - 10 ;            if(f == 0)            {                k1 = k1 - 20 ;                k3 = k3 - 20 ;            }            if(f == 1)            {                k2 = k2 - 20 ;                k4 = k4 - 20 ;            }            if(k1 >= k2)            {                f = 0 ;            }            if(k1 < k2)            {                f = 1 ;            }        }        if(e.getKeyCode() == KeyEvent.VK_RIGHT&&k2<1200)        {            //定义乌龟向右移动 移动规则和向左一样            x = x + 10 ;            if(f == 0)            {                k2 = k2 + 20 ;                k4 = k4 + 20 ;            }            if(f == 1)            {                k1 = k1 + 20 ;                k3 = k3 + 20 ;            }            if(k2 <= k1)            {                f = 0 ;            }            if(k2 > k1)            {                f = 1 ;            }        }        repaint() ;    }    @Override    public void keyReleased(KeyEvent e) {        // TODO Auto-generated method stub    }    @Override    public void mouseClicked(MouseEvent e) {        // TODO Auto-generated method stub    }    @Override    public void mousePressed(MouseEvent e)     {        //定义鼠标点到哪里 乌龟就出现在哪里        x = e.getX() ;        y = e.getY() ;        j1 = e.getY() ;        j2 = e.getY() ;        j3 = e.getY() ;        j4 = e.getY() ;        k1 = e.getX() ;        k2 = e.getX() ;        k3 = e.getX() ;        k4 = e.getX() ;        repaint() ;    }    @Override    public void mouseReleased(MouseEvent e) {        // TODO Auto-generated method stub    }    @Override    public void mouseEntered(MouseEvent e) {        // TODO Auto-generated method stub    }    @Override    public void mouseExited(MouseEvent e) {        // TODO Auto-generated method stub    }}

博主想来想去最后还是自己把注释一行行的写上去了，各位可以拿去参考参考

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