java绘制基本图形代码,根据java代码画类图

求Java 实现绘制图形并移动代码

代码如下：import javax.microedition.lcdui.Canvas;import javax.microedition.lcdui.Display;import javax.microedition.lcdui.Graphics;import javax.microedition.midlet.MIDlet;import javax.microedition.midlet.MIDletStateChangeException;public class Zfx extends MIDlet { private Display display; public Zfx() { display=Display.getDisplay(this); Zfxc qs=new Zfxc(); display.setCurrent(qs); } protected void destroyApp(boolean arg0) throws MIDletStateChangeException { } protected void pauseApp() { } protected void startApp() throws MIDletStateChangeException { }}class Zfxc extends Canvas implements Runnable{ private int x,y,x1,y1,i; private boolean flag; Zfxc(){ init(); } private void init(){ Thread thread=new Thread(this); thread.start(); } protected void paint(Graphics g) { g.setColor(255,255,255); g.fillRect(0, 0, this.getWidth(), this.getHeight()); g.setColor(0); g.fillRect(x, y, 10, 10); } private void logic(){ if(x=this.getWidth()-10){ x1=2; } if(x1==1){ x+=3; }else if(x1==2){ x-=3; } if(y=this.getHeight()-10){ y1=2; } if(y1==1){ y+=3; }else if(y1==2){ y-=3; } } protected void keyPressed(int keyCode) { if(keyCode==-5){ if(i==0){ flag=true; i=1; }else if(i==1){ flag=false; i=0; } } } public void run() { while(true){ if(flag){ logic(); } repaint(); try { Thread.sleep(80); } catch (InterruptedException e) { e.printStackTrace(); } } }}求Java 实现绘制图形并移动代码

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java绘图，求代码

上代码：

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("画");

JLabel huaban=new huaban();

JPanel jPanel=new JPanel();

JLabel banjingLabel,xLabel,yLabel;

public YuanYiDong(){

banjingLabel=new JLabel("半径");

xLabel=new JLabel("X坐标");

yLabel=new JLabel("Y坐标");

this.setTitle("圆的移动");

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);

}

给分吧！

50分 java Graphics 画图代码补充

最大化图形消失的问题也解决了，注意类名首字母大写

import java.awt.*;

import java.awt.event.*;

import java.util.ArrayList;

import javax.swing.*;

public class Map {

public static void main(String[] args) {

new Draw();

}

class Draw extends JFrame{

ArrayListPoint points = new ArrayListPoint();

JPanel p=new JPanel();

Draw(){

add(p,BorderLayout.CENTER);

p.addMouseListener(new MyMouse());

this.addWindowStateListener(new MyWindow());

this.setResizable(true);

validate();

setBounds(50,50,500,400);

setVisible(true);

}

public void paint (Graphics g){

for(int i = 0;ipoints.size();i++){

g.fillOval(points.get(i).x, points.get(i).y, 30, 30);

}

private class MyWindow implements WindowStateListener{

public void windowStateChanged(WindowEvent arg0) {

repaint();

}

private class MyMouse extends MouseAdapter{

public void mouseClicked(MouseEvent e) {

points.add(e.getPoint());

repaint();

}

用java 在窗体中画一个简单图形。

帮你改了一下。

你要画在panel上，然后frame.add(panel)就能显示。

是不是和applet搞混了，applet复写一些方法就能显示，但现在你编的是java gui

import java.awt.*;

import java.awt.Event.*;

import javax.swing.*; //import javax.swing.Timer;

import java.awt.BasicStroke;

//import java.util.Date;

//import java.text.*;

//import java.util.*;

public class TestGui {

public void paint(Graphics g) {

Graphics2D a2d = (Graphics2D) g;

int x = 120, y = 90, width = 150, height = 150;

a2d.setColor(Color.red);

a2d.setStroke(new BasicStroke(3.0f)); // 设置线条宽度，3.0即线的宽度

a2d.drawOval(x, y, width, height);

}

public static void main(String[] args) {

JFrame frame = new JFrame();

// frame.add(new paint(),BorderLayout.CENTER);

frame.setSize(500, 500);

frame.setLocation(200, 200);

frame.setVisible(true);

Panel p = new Panel();

frame.add(p);

// frame.paint(null);

// TODO code application logic here

}

class Panel extends JPanel {

// 重新覆盖paint方法

public void paint(Graphics g) {

super.paint(g);

Graphics2D a2d = (Graphics2D) g;

int x = 120, y = 90, width = 150, height = 150;

a2d.setColor(Color.red);

a2d.setStroke(new BasicStroke(3.0f)); // 设置线条宽度，3.0即线的宽度

a2d.drawOval(x, y, width, height);

}

关于java中画图形的paint方法

应该先调用父类的paint，即super.paint(g)，不过最好的方法还是继承出一个JPanel的子类，然后重载它的paint方法，然后把这个子类的实例增加到JFrame的容器里

JAVA编译简易画图板代码

import java.applet.*;

import java.awt.*;

import java.awt.event.*;

import java.util.*;

import javax.swing.*;

import java.awt.geom.*;

import java.io.*;

class Point implements Serializable

{

int x,y;

Color col;

int tool;

int boarder;

Point(int x, int y, Color col, int tool, int boarder)

{

this.x = x;

this.y = y;

this.col = col;

this.tool = tool;

this.boarder = boarder;

}

class paintboard extends Frame implements ActionListener,MouseMotionListener,MouseListener,ItemListener

{

int x = -1, y = -1;

int con = 1;//画笔大小

int Econ = 5;//橡皮大小

int toolFlag = 0;//toolFlag:工具标记

//toolFlag工具对应表：

//（0--画笔）；（1--橡皮）；（2--清除）；

//（3--直线）；（4--圆）；（5--矩形）；

Color c = new Color(0,0,0); //画笔颜色

BasicStroke size = new BasicStroke(con,BasicStroke.CAP_BUTT,BasicStroke.JOIN_BEVEL);//画笔粗细

Point cutflag = new Point(-1, -1, c, 6, con);//截断标志

Vector paintInfo = null;//点信息向量组

int n = 1;

FileInputStream picIn = null;

FileOutputStream picOut = null;

ObjectInputStream VIn = null;

ObjectOutputStream VOut = null;

// *工具面板--画笔，直线，圆，矩形，多边形,橡皮，清除*/

Panel toolPanel;

Button eraser, drLine,drCircle,drRect;

Button clear ,pen;

Choice ColChoice,SizeChoice,EraserChoice;

Button colchooser;

Label 颜色,大小B,大小E;

//保存功能

Button openPic,savePic;

FileDialog openPicture,savePicture;

paintboard(String s)

{

super(s);

addMouseMotionListener(this);

addMouseListener(this);

paintInfo = new Vector();

/*各工具按钮及选择项*/

//颜色选择

ColChoice = new Choice();

ColChoice.add("black");

ColChoice.add("red");

ColChoice.add("blue");

ColChoice.add("green");

ColChoice.addItemListener(this);

//画笔大小选择

SizeChoice = new Choice();

SizeChoice.add("1");

SizeChoice.add("3");

SizeChoice.add("5");

SizeChoice.add("7");

SizeChoice.add("9");

SizeChoice.addItemListener(this);

//橡皮大小选择

EraserChoice = new Choice();

EraserChoice.add("5");

EraserChoice.add("9");

EraserChoice.add("13");

EraserChoice.add("17");

EraserChoice.addItemListener(this);

////////////////////////////////////////////////////

toolPanel = new Panel();

clear = new Button("清除");

eraser = new Button("橡皮");

pen = new Button("画笔");

drLine = new Button("画直线");

drCircle = new Button("画圆形");

drRect = new Button("画矩形");

openPic = new Button("打开图画");

savePic = new Button("保存图画");

colchooser = new Button("显示调色板");

//各组件事件监听

clear.addActionListener(this);

eraser.addActionListener(this);

pen.addActionListener(this);

drLine.addActionListener(this);

drCircle.addActionListener(this);

drRect.addActionListener(this);

openPic.addActionListener(this);

savePic.addActionListener(this);

colchooser.addActionListener(this);

颜色 = new Label("画笔颜色",Label.CENTER);

大小B = new Label("画笔大小",Label.CENTER);

大小E = new Label("橡皮大小",Label.CENTER);

//面板添加组件

toolPanel.add(openPic);

toolPanel.add(savePic);

toolPanel.add(pen);

toolPanel.add(drLine);

toolPanel.add(drCircle);

toolPanel.add(drRect);

toolPanel.add(颜色); toolPanel.add(ColChoice);

toolPanel.add(大小B); toolPanel.add(SizeChoice);

toolPanel.add(colchooser);

toolPanel.add(eraser);

toolPanel.add(大小E); toolPanel.add(EraserChoice);

toolPanel.add(clear);

//工具面板到APPLET面板

add(toolPanel,BorderLayout.NORTH);

setBounds(60,60,900,600); setVisible(true);

validate();

//dialog for save and load

openPicture = new FileDialog(this,"打开图画",FileDialog.LOAD);

openPicture.setVisible(false);

savePicture = new FileDialog(this,"保存图画",FileDialog.SAVE);

savePicture.setVisible(false);

openPicture.addWindowListener(new WindowAdapter()

{

public void windowClosing(WindowEvent e)

{ openPicture.setVisible(false); }

});

savePicture.addWindowListener(new WindowAdapter()

{

public void windowClosing(WindowEvent e)

{ savePicture.setVisible(false); }

});

addWindowListener(new WindowAdapter()

{

public void windowClosing(WindowEvent e)

{ System.exit(0);}

});

}

public void paint(Graphics g)

{

Graphics2D g2d = (Graphics2D)g;

Point p1,p2;

n = paintInfo.size();

if(toolFlag==2)

g.clearRect(0,0,getSize().width,getSize().height);//清除

for(int i=0; in ;i++){

p1 = (Point)paintInfo.elementAt(i);

p2 = (Point)paintInfo.elementAt(i+1);

size = new BasicStroke(p1.boarder,BasicStroke.CAP_BUTT,BasicStroke.JOIN_BEVEL);

g2d.setColor(p1.col);

g2d.setStroke(size);

if(p1.tool==p2.tool)

{

switch(p1.tool)

{

case 0://画笔

Line2D line1 = new Line2D.Double(p1.x, p1.y, p2.x, p2.y);

g2d.draw(line1);

break;

case 1://橡皮

g.clearRect(p1.x, p1.y, p1.boarder, p1.boarder);

break;

case 3://画直线

Line2D line2 = new Line2D.Double(p1.x, p1.y, p2.x, p2.y);

g2d.draw(line2);

break;

case 4://画圆

Ellipse2D ellipse = new Ellipse2D.Double(p1.x, p1.y, Math.abs(p2.x-p1.x) , Math.abs(p2.y-p1.y));

g2d.draw(ellipse);

break;

case 5://画矩形

Rectangle2D rect = new Rectangle2D.Double(p1.x, p1.y, Math.abs(p2.x-p1.x) , Math.abs(p2.y-p1.y));

g2d.draw(rect);

break;

case 6://截断，跳过

i=i+1;

break;

default :

}//end switch

}//end if

}//end for

}

public void itemStateChanged(ItemEvent e)

{

if(e.getSource()==ColChoice)//预选颜色

{

String name = ColChoice.getSelectedItem();

if(name=="black")

{c = new Color(0,0,0); }

else if(name=="red")

{c = new Color(255,0,0);}

else if(name=="green")

{c = new Color(0,255,0);}

else if(name=="blue")

{c = new Color(0,0,255);}

}

else if(e.getSource()==SizeChoice)//画笔大小

{

String selected = SizeChoice.getSelectedItem();

if(selected=="1")

{

con = 1;