java繪圖，求代碼

上代碼：

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import java.awt.BorderLayout;

import java.awt.Color;

import java.awt.FlowLayout;

import java.awt.Graphics;

import java.awt.Image;

import java.awt.LayoutManager;

import java.awt.Paint;

import javax.swing.JButton;

import javax.swing.JFrame;

import javax.swing.JLabel;

import javax.swing.JPanel;

import javax.swing.JTextField;

import java.awt.event.*;

public class YuanYiDong extends JFrame{

private static int BANJIN=0;

private static int X=0;

private static int Y=0;

JTextField rTxt=new JTextField(5);

JTextField xField=new JTextField(5);

JTextField yField=new JTextField(5);

JButton paintBt=new JButton("畫");

JLabel huaban=new huaban();

JPanel jPanel=new JPanel();

JLabel banjingLabel,xLabel,yLabel;

public YuanYiDong(){

banjingLabel=new JLabel("半徑");

xLabel=new JLabel("X坐標(biāo)");

yLabel=new JLabel("Y坐標(biāo)");

this.setTitle("圓的移動");

this.setLocation(300,100);

this.setSize(500, 400);

this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

this.setVisible(true);

this.add(rTxt);

jPanel.setLayout(new FlowLayout());

add(huaban,BorderLayout.CENTER);

jPanel.add(banjingLabel);

jPanel.add(rTxt);

jPanel.add(xLabel);

jPanel.add(xField);

jPanel.add(yLabel);

jPanel.add(yField);

jPanel.add(paintBt);

add(jPanel,BorderLayout.NORTH);

paintBt.addActionListener(new ActionListener() {

@Override

public void actionPerformed(ActionEvent e) {

// TODO Auto-generated method stub

BANJIN=Integer.parseInt(rTxt.getText());

X=Integer.parseInt(xField.getText());

Y=Integer.parseInt(yField.getText());

huaban.repaint();

}

});

}

private void drawCirlce(Graphics g) {

g.setColor(Color.blue);

g.fillOval(X, Y, BANJIN,BANJIN);

}

public static void main(String[] args) {

YuanYiDong frame = new YuanYiDong();

}

public class huaban extends JLabel{

public huaban(){}

public void paint(Graphics g) {

Image image = createImage(getWidth(), getHeight());

drawCirlce(image.getGraphics());

g.drawImage(image, 0, 0, null);

}

}

}

給分吧！

用java編寫一個簡單的畫圖程序。不用復(fù)雜

import java.awt.*;

import java.awt.event.*;

import java.awt.geom.*;

import javax.swing.*;

//不規(guī)則圖形的繪制

public class IrregularShapeDemo extends JFrame {

GeneralPath gPath= new GeneralPath(); //GeneralPath對象實(shí)例

Point aPoint;

//構(gòu)造函數(shù)

public IrregularShapeDemo() {

super("不規(guī)則圖形的繪制"); //調(diào)用父類構(gòu)造函數(shù)

enableEvents(AWTEvent.MOUSE_EVENT_MASK|AWTEvent.MOUSE_MOTION_EVENT_MASK); //允許事件

setSize(300, 200); //設(shè)置窗口尺寸

setVisible(true); //設(shè)置窗口可視

setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); //關(guān)閉窗口時退出程序

}

public void paint(Graphics g) { //重載窗口組件的paint()方法

Graphics2D g2D = (Graphics2D)g; //獲取圖形環(huán)境

g2D.draw(gPath); //繪制路徑

}

public static void main(String[] args) {

new IrregularShapeDemo();

}

protected void processMouseEvent(MouseEvent e) { //鼠標(biāo)事件處理

if(e.getID() == MouseEvent.MOUSE_PRESSED) {

aPoint = e.getPoint(); //得到當(dāng)前鼠標(biāo)點(diǎn)

gPath = new GeneralPath(); //重新實(shí)例化GeneralPath對象

gPath.moveTo(aPoint.x,aPoint.y); //設(shè)置路徑點(diǎn)

}

}

protected void processMouseMotionEvent(MouseEvent e) { //鼠標(biāo)運(yùn)動事件處理

if(e.getID() == MouseEvent.MOUSE_DRAGGED) {

aPoint = e.getPoint(); //得到當(dāng)前鼠標(biāo)點(diǎn)

gPath.lineTo(aPoint.x, aPoint.y); //設(shè)置路徑

gPath.moveTo(aPoint.x, aPoint.y);

repaint(); //重繪組件

}

}

}

求一個最簡單的在JAVA上畫圖形的代碼。

import java.awt.*;

class MyFrame extends Frame{

MyPanel p = new MyPanel();

public MyFrame(){

this.add(p);

this.setSize(300,300);

//省略了關(guān)閉窗口的代碼

this.setVisible(true);

}

public static void main(String[] args){

new MyFrame();

}

class MyPanel extends Panel

{

public void paint(Graphics g){

g.drawLine(0,0,300,300);

}

}

}