java画小女孩的代码 用java程序画小猫

求java版画图程序的源代码

找到java画小女孩的代码了java画小女孩的代码，很久以前写java画小女孩的代码的一个简单画图java画小女孩的代码，呵呵～当时要求用AWT写，很难受。

package net.miqiang.gui;

import java.awt.BasicStroke;

import java.awt.BorderLayout;

import java.awt.Button;

import java.awt.Color;

import java.awt.Cursor;

import java.awt.Dimension;

import java.awt.Frame;

import java.awt.Graphics;

import java.awt.Graphics2D;

import java.awt.GridLayout;

import java.awt.Label;

import java.awt.Panel;

import java.awt.RenderingHints;

import java.awt.Toolkit;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.awt.event.MouseAdapter;

import java.awt.event.MouseEvent;

import java.awt.event.MouseListener;

import java.awt.event.MouseMotionListener;

import java.awt.event.WindowAdapter;

import java.awt.event.WindowEvent;

import java.awt.image.BufferedImage;

/**

* 简单画图板程序

* 好久没用 AWT java画小女孩的代码了，写起来真别扭，如果用 swing 会很舒服，有空再改写吧。

*

* @author 米强

*

*/

public class TestMain extends Frame {

// 画板

private Palette palette = null;

// 显示当前颜色的面板

private Panel nonceColor = null;

// 画笔粗细

private Label drawWidth = null;

// 画笔端点的装饰

private Label drawCap = null;

// 选取颜色按钮的监听事件类

private ButtonColorAction buttonColorAction = null;

// 鼠标进入按钮后光标样式的监听事件类

private ButtonCursor buttonCursor = null;

// 画笔样式的监听事件

private ButtonStrokeAction buttonStrokeAction = null;

/**

* 构造方法

*

*/

public TestMain() {

// 设置标题栏文字

super("简易画图板");

// 构造一个画图板

palette = new Palette();

Panel pane = new Panel(new GridLayout(2, 1));

// 画笔颜色选择器

Panel paneColor = new Panel(new GridLayout(1, 13));

// 12 个颜色选择按钮

Button [] buttonColor = new Button[12];

Color [] color = {Color.black, Color.blue, Color.cyan, Color.darkGray, Color.gray, Color.green, Color.magenta, Color.orange, Color.pink, Color.red, Color.white, Color.yellow};

// 显示当前颜色的面板

nonceColor = new Panel();

nonceColor.setBackground(Color.black);

paneColor.add(nonceColor);

buttonColorAction = new ButtonColorAction();

buttonCursor = new ButtonCursor();

for(int i = 0; i buttonColor.length; i++){

buttonColor[i] = new Button();

buttonColor[i].setBackground(color[i]);

buttonColor[i].addActionListener(buttonColorAction);

buttonColor[i].addMouseListener(buttonCursor);

paneColor.add(buttonColor[i]);

}

pane.add(paneColor);

// 画笔颜色选择器

Panel paneStroke = new Panel(new GridLayout(1, 13));

// 控制画笔样式

buttonStrokeAction = new ButtonStrokeAction();

Button [] buttonStroke = new Button[11];

buttonStroke[0] = new Button("1");

buttonStroke[1] = new Button("3");

buttonStroke[2] = new Button("5");

buttonStroke[3] = new Button("7");

buttonStroke[4] = new Button("9");

buttonStroke[5] = new Button("11");

buttonStroke[6] = new Button("13");

buttonStroke[7] = new Button("15");

buttonStroke[8] = new Button("17");

buttonStroke[9] = new Button("■");

buttonStroke[10] = new Button("●");

drawWidth = new Label("3", Label.CENTER);

drawCap = new Label("●", Label.CENTER);

drawWidth.setBackground(Color.lightGray);

drawCap.setBackground(Color.lightGray);

paneStroke.add(drawWidth);

for(int i = 0; i buttonStroke.length; i++){

paneStroke.add(buttonStroke[i]);

buttonStroke[i].addMouseListener(buttonCursor);

buttonStroke[i].addActionListener(buttonStrokeAction);

if(i = 8){

buttonStroke[i].setName("width");

}else{

buttonStroke[i].setName("cap");

}

if(i == 8){

paneStroke.add(drawCap);

}

}

pane.add(paneStroke);

// 将画笔颜色选择器添加到窗体中

this.add(pane, BorderLayout.NORTH);

// 将画图板添加到窗体中

this.add(palette);

// 添加窗口监听，点击关闭按钮时退出程序

this.addWindowListener(new WindowAdapter() {

public void windowClosing(WindowEvent e) {

System.exit(0);

}

});

// 设置窗体 ICON 图标

this.setIconImage(Toolkit.getDefaultToolkit().createImage("images/palette.png"));

// 设置窗口的大小

this.setSize(new Dimension(400, 430));

// 设置窗口位置，处于屏幕正中央

this.setLocationRelativeTo(null);

// 显示窗口

this.setVisible(true);

}

/**

* 程序入口

*

* @param args

* 字符串数组参数

*/

public static void main(String[] args) {

new TestMain();

}

/**

* 选取颜色按钮的监听事件类

* @author 米强

*

*/

class ButtonColorAction implements ActionListener {

public void actionPerformed(ActionEvent e) {

Color color_temp = ((Button)e.getSource()).getBackground();

nonceColor.setBackground(color_temp);

palette.setColor(color_temp);

}

}

/**

* 鼠标进入按钮变换光标样式监听事件类

* @author 米强

*

*/

class ButtonCursor extends MouseAdapter {

public void mouseEntered(MouseEvent e) {

((Button)e.getSource()).setCursor(new Cursor(Cursor.HAND_CURSOR));

}

public void mouseExited(MouseEvent e) {

((Button)e.getSource()).setCursor(new Cursor(Cursor.DEFAULT_CURSOR));

}

}

/**

* 设置画笔的监听事件类

* @author 米强

*

*/

class ButtonStrokeAction implements ActionListener {

public void actionPerformed(ActionEvent e) {

Button button_temp = (Button) e.getSource();

String name = button_temp.getName();

if(name.equalsIgnoreCase("width")){

drawWidth.setText(button_temp.getLabel());

palette.setStroke(Float.parseFloat(button_temp.getLabel()));

}else if(name.equalsIgnoreCase("cap")){

drawCap.setText(button_temp.getLabel());

if(button_temp.getLabel().equals("■")){

palette.setStroke(BasicStroke.CAP_SQUARE);

}else if(button_temp.getLabel().equals("●")){

palette.setStroke(BasicStroke.CAP_ROUND);

}

}

}

}

}

/**

* 画板类

*

* @author 米强

*

*/

class Palette extends Panel implements MouseListener, MouseMotionListener {

// 鼠标 X 坐标的位置

private int mouseX = 0;

// 上一次 X 坐标位置

private int oldMouseX = 0;

// 鼠标 Y 坐标的位置

private int mouseY = 0;

// 上一次 Y 坐标位置

private int oldMouseY = 0;

// 画图颜色

private Color color = null;

// 画笔样式

private BasicStroke stroke = null;

// 缓存图形

private BufferedImage image = null;

/**

* 构造一个画板类

*

*/

public Palette() {

this.addMouseListener(this);

this.addMouseMotionListener(this);

// 默认黑色画笔

color = new Color(0, 0, 0);

// 设置默认画笔样式

stroke = new BasicStroke(3.0f, BasicStroke.CAP_ROUND, BasicStroke.JOIN_ROUND);

// 建立 1280 * 1024 的 RGB 缓存图象

image = new BufferedImage(1280, 1024, BufferedImage.TYPE_INT_RGB);

// 设置颜色

image.getGraphics().setColor(Color.white);

// 画背景

image.getGraphics().fillRect(0, 0, 1280, 1024);

}

/**

* 重写 paint 绘图方法

*/

public void paint(Graphics g) {

super.paint(g);

// 转换为 Graphics2D

Graphics2D g2d = (Graphics2D) g;

// 获取缓存图形 Graphics2D

Graphics2D bg = image.createGraphics();

// 图形抗锯齿

bg.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);

// 设置绘图颜色

bg.setColor(color);

// 设置画笔样式

bg.setStroke(stroke);

// 画线，从上一个点到新的点

bg.drawLine(oldMouseX, oldMouseY, mouseX, mouseY);

// 将缓存中的图形画到画板上

g2d.drawImage(image, 0, 0, this);

}

/**

* 重写 update 方法

*/

public void update(Graphics g) {

this.paint(g);

}

/**

* @return stroke

*/

public BasicStroke getStroke() {

return stroke;

}

/**

* @param stroke 要设置的 stroke

*/

public void setStroke(BasicStroke stroke) {

this.stroke = stroke;

}

/**

* 设置画笔粗细

* @param width

*/

public void setStroke(float width) {

this.stroke = new BasicStroke(width, stroke.getEndCap(), stroke.getLineJoin());

}

/**

* 设置画笔端点的装饰

* @param cap 参考 java.awt.BasicStroke 类静态字段

*/

public void setStroke(int cap) {

this.stroke = new BasicStroke(stroke.getLineWidth(), cap, stroke.getLineJoin());

}

/**

* @return color

*/

public Color getColor() {

return color;

}

/**

* @param color 要设置的 color

*/

public void setColor(Color color) {

this.color = color;

}

public void mouseClicked(MouseEvent mouseEvent) {

}

/**

* 鼠标按下

*/

public void mousePressed(MouseEvent mouseEvent) {

this.oldMouseX = this.mouseX = mouseEvent.getX();

this.oldMouseY = this.mouseY = mouseEvent.getY();

repaint();

}

public void mouseReleased(MouseEvent mouseEvent) {

}

/**

* 鼠标进入棋盘

*/

public void mouseEntered(MouseEvent mouseEvent) {

this.setCursor(new Cursor(Cursor.CROSSHAIR_CURSOR));

}

/**

* 鼠标退出棋盘

*/

public void mouseExited(MouseEvent mouseEvent) {

this.setCursor(new Cursor(Cursor.DEFAULT_CURSOR));

}

/**

* 鼠标拖动

*/

public void mouseDragged(MouseEvent mouseEvent) {

this.oldMouseX = this.mouseX;

this.oldMouseY = this.mouseY;

this.mouseX = mouseEvent.getX();

this.mouseY = mouseEvent.getY();

repaint();

}

public void mouseMoved(MouseEvent mouseEvent) {

}

}

相关问答

Q1: JAVA画图板程序，用netbeans做，要求画圆，椭圆，直线，三角形，矩形，可以填充颜色和擦除

import java.applet.*; 

import java.awt.*; 

import java.awt.event.*; 

import java.util.*; 

import javax.swing.*; 

import java.awt.geom.*; 

import java.io.*; 

import java.sql.Connection;

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() 

{ 

            @Override

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(); 

            switch (name) {

                case "black":

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

                    break;

                case "red":

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

                    break;

                case "green":

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

                    break;

                case "blue":

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

                    break;

            }

} 

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

{ 

String selected = SizeChoice.getSelectedItem(); 

            switch (selected) {

                case "1":

                    con = 1;

                    size = new BasicStroke(con,BasicStroke.CAP_BUTT,BasicStroke.JOIN_BEVEL);

                    break;

                case "3":

                    con = 3;

                    size = new BasicStroke(con,BasicStroke.CAP_BUTT,BasicStroke.JOIN_BEVEL);

                    break;

                case "5":

                    con = 5;

                    size = new BasicStroke(con,BasicStroke.CAP_BUTT,BasicStroke.JOIN_BEVEL);

                    break;

                case "7":

                    con = 7;

                    size = new BasicStroke(con,BasicStroke.CAP_BUTT,BasicStroke.JOIN_BEVEL);

                    break;

                case "9":

                    con = 9;

                    size = new BasicStroke(con,BasicStroke.CAP_BUTT,BasicStroke.JOIN_BEVEL);

                    break;

            }

} 

else if(e.getSource()==EraserChoice)//橡皮大小 

{ 

String Esize = EraserChoice.getSelectedItem(); 

if(Esize=="5") 

{ Econ = 5*2; } 

else if(Esize=="9") 

{ Econ = 9*2; } 

else if(Esize=="13") 

{ Econ = 13*2; } 

else if(Esize=="17") 

{ Econ = 17*3; } 

} 

} 

public void mouseDragged(MouseEvent e) 

{ 

Point p1 ; 

switch(toolFlag){ 

case 0://画笔 

x = (int)e.getX(); 

y = (int)e.getY(); 

p1 = new Point(x, y, c, toolFlag, con); 

paintInfo.addElement(p1); 

repaint(); 

break; 

case 1://橡皮 

x = (int)e.getX(); 

y = (int)e.getY(); 

p1 = new Point(x, y, null, toolFlag, Econ); 

paintInfo.addElement(p1); 

repaint(); 

break; 

default : 

} 

} 

public void mouseMoved(MouseEvent e) {} 

public void update(Graphics g) 

{ 

paint(g); 

} 

public void mousePressed(MouseEvent e) 

{ 

Point p2; 

switch(toolFlag){ 

case 3://直线 

x = (int)e.getX(); 

y = (int)e.getY(); 

p2 = new Point(x, y, c, toolFlag, con); 

paintInfo.addElement(p2); 

break; 

case 4: //圆 

x = (int)e.getX(); 

y = (int)e.getY(); 

p2 = new Point(x, y, c, toolFlag, con); 

paintInfo.addElement(p2); 

break; 

case 5: //矩形 

x = (int)e.getX(); 

y = (int)e.getY(); 

p2 = new Point(x, y, c, toolFlag, con); 

paintInfo.addElement(p2); 

break; 

default : 

} 

} 

public void mouseReleased(MouseEvent e) 

{ 

Point p3; 

switch(toolFlag){ 

case 0://画笔 

paintInfo.addElement(cutflag); 

break; 

case 1: //eraser 

paintInfo.addElement(cutflag); 

break; 

case 3://直线 

x = (int)e.getX(); 

y = (int)e.getY(); 

p3 = new Point(x, y, c, toolFlag, con); 

paintInfo.addElement(p3); 

paintInfo.addElement(cutflag); 

repaint(); 

break; 

case 4: //圆 

x = (int)e.getX(); 

y = (int)e.getY(); 

p3 = new Point(x, y, c, toolFlag, con); 

paintInfo.addElement(p3); 

paintInfo.addElement(cutflag); 

repaint(); 

break; 

case 5: //矩形 

x = (int)e.getX(); 

y = (int)e.getY(); 

p3 = new Point(x, y, c, toolFlag, con); 

paintInfo.addElement(p3); 

paintInfo.addElement(cutflag); 

repaint(); 

break; 

default: 

} 

} 

public void mouseEntered(MouseEvent e){} 

public void mouseExited(MouseEvent e){} 

public void mouseClicked(MouseEvent e){} 

public void actionPerformed(ActionEvent e) 

{ 

if(e.getSource()==pen)//画笔 

{toolFlag = 0;} 

if(e.getSource()==eraser)//橡皮 

{toolFlag = 1;} 

if(e.getSource()==clear)//清除 

{ 

toolFlag = 2; 

paintInfo.removeAllElements(); 

repaint(); 

} 

if(e.getSource()==drLine)//画线 

{toolFlag = 3;} 

if(e.getSource()==drCircle)//画圆 

{toolFlag = 4;} 

if(e.getSource()==drRect)//画矩形 

{toolFlag = 5;} 

if(e.getSource()==colchooser)//调色板 

{ 

Color newColor = JColorChooser.showDialog(this,"调色板",c); 

c = newColor; 

} 

if(e.getSource()==openPic)//打开图画 

{ 

openPicture.setVisible(true); 

if(openPicture.getFile()!=null) 

{ 

int tempflag; 

tempflag = toolFlag; 

toolFlag = 2 ; 

repaint(); 

try{ 

paintInfo.removeAllElements(); 

File filein = new File(openPicture.getDirectory(),openPicture.getFile()); 

picIn = new FileInputStream(filein); 

VIn = new ObjectInputStream(picIn); 

paintInfo = (Vector)VIn.readObject(); 

VIn.close(); 

repaint(); 

toolFlag = tempflag; 

} 

catch(ClassNotFoundException IOe2) 

{ 

repaint(); 

toolFlag = tempflag; 

System.out.println("can not read object"); 

} 

catch(IOException IOe) 

{ 

repaint(); 

toolFlag = tempflag; 

System.out.println("can not read file"); 

} 

} 

} 

if(e.getSource()==savePic)//保存图画 

{ 

savePicture.setVisible(true); 

try{ 

File fileout = new File(savePicture.getDirectory(),savePicture.getFile()); 

picOut = new FileOutputStream(fileout); 

VOut = new ObjectOutputStream(picOut); 

VOut.writeObject(paintInfo); 

VOut.close(); 

} 

catch(IOException IOe) 

{ 

System.out.println("can not write object"); 

} 

} 

} 

}//end paintboard 

public class Pb 

{ 

public static void main(String args[]) 

{ new paintboard("画图程序"); } 

}

Q2: 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;

size = new BasicStroke(con,BasicStroke.CAP_BUTT,BasicStroke.JOIN_BEVEL);

}

else if(selected=="3")

{

con = 3;

size = new BasicStroke(con,BasicStroke.CAP_BUTT,BasicStroke.JOIN_BEVEL);

}

else if(selected=="5")

{con = 5;

size = new BasicStroke(con,BasicStroke.CAP_BUTT,BasicStroke.JOIN_BEVEL);

}

else if(selected=="7")

{con = 7;

size = new BasicStroke(con,BasicStroke.CAP_BUTT,BasicStroke.JOIN_BEVEL);

}

else if(selected=="9")

{con = 9;

size = new BasicStroke(con,BasicStroke.CAP_BUTT,BasicStroke.JOIN_BEVEL);

}

}

else if(e.getSource()==EraserChoice)//橡皮大小

{

String Esize = EraserChoice.getSelectedItem();

if(Esize=="5")

{ Econ = 5*2; }

else if(Esize=="9")

{ Econ = 9*2; }

else if(Esize=="13")

{ Econ = 13*2; }

else if(Esize=="17")

{ Econ = 17*3; }

}

}

public void mouseDragged(MouseEvent e)

{

Point p1 ;

switch(toolFlag){

case 0://画笔

x = (int)e.getX();

y = (int)e.getY();

p1 = new Point(x, y, c, toolFlag, con);

paintInfo.addElement(p1);

repaint();

break;

case 1://橡皮

x = (int)e.getX();

y = (int)e.getY();

p1 = new Point(x, y, null, toolFlag, Econ);

paintInfo.addElement(p1);

repaint();

break;

default :

}

}

public void mouseMoved(MouseEvent e) {}

public void update(Graphics g)

{

paint(g);

}

public void mousePressed(MouseEvent e)

{

Point p2;

switch(toolFlag){

case 3://直线

x = (int)e.getX();

y = (int)e.getY();

p2 = new Point(x, y, c, toolFlag, con);

paintInfo.addElement(p2);

break;

case 4: //圆

x = (int)e.getX();

y = (int)e.getY();

p2 = new Point(x, y, c, toolFlag, con);

paintInfo.addElement(p2);

break;

case 5: //矩形

x = (int)e.getX();

y = (int)e.getY();

p2 = new Point(x, y, c, toolFlag, con);

paintInfo.addElement(p2);

break;

default :

}

}

public void mouseReleased(MouseEvent e)

{

Point p3;

switch(toolFlag){

case 0://画笔

paintInfo.addElement(cutflag);

break;

case 1: //eraser

paintInfo.addElement(cutflag);

break;

case 3://直线

x = (int)e.getX();

y = (int)e.getY();

p3 = new Point(x, y, c, toolFlag, con);

paintInfo.addElement(p3);

paintInfo.addElement(cutflag);

repaint();

break;

case 4: //圆

x = (int)e.getX();

y = (int)e.getY();

p3 = new Point(x, y, c, toolFlag, con);

paintInfo.addElement(p3);

paintInfo.addElement(cutflag);

repaint();

break;

case 5: //矩形

x = (int)e.getX();

y = (int)e.getY();

p3 = new Point(x, y, c, toolFlag, con);

paintInfo.addElement(p3);

paintInfo.addElement(cutflag);

repaint();

break;

default:

}

}

public void mouseEntered(MouseEvent e){}

public void mouseExited(MouseEvent e){}

public void mouseClicked(MouseEvent e){}

public void actionPerformed(ActionEvent e)

{

if(e.getSource()==pen)//画笔

{toolFlag = 0;}

if(e.getSource()==eraser)//橡皮

{toolFlag = 1;}

if(e.getSource()==clear)//清除

{

toolFlag = 2;

paintInfo.removeAllElements();

repaint();

}

if(e.getSource()==drLine)//画线

{toolFlag = 3;}

if(e.getSource()==drCircle)//画圆

{toolFlag = 4;}

if(e.getSource()==drRect)//画矩形

{toolFlag = 5;}

if(e.getSource()==colchooser)//调色板

{

Color newColor = JColorChooser.showDialog(this,"调色板",c);

c = newColor;

}

if(e.getSource()==openPic)//打开图画

{

openPicture.setVisible(true);

if(openPicture.getFile()!=null)

{

int tempflag;

tempflag = toolFlag;

toolFlag = 2 ;

repaint();

try{

paintInfo.removeAllElements();

File filein = new File(openPicture.getDirectory(),openPicture.getFile());

picIn = new FileInputStream(filein);

VIn = new ObjectInputStream(picIn);

paintInfo = (Vector)VIn.readObject();

VIn.close();

repaint();

toolFlag = tempflag;

}

catch(ClassNotFoundException IOe2)

{

repaint();

toolFlag = tempflag;

System.out.println("can not read object");

}

catch(IOException IOe)

{

repaint();

toolFlag = tempflag;

System.out.println("can not read file");

}

}

}

if(e.getSource()==savePic)//保存图画

{

savePicture.setVisible(true);

try{

File fileout = new File(savePicture.getDirectory(),savePicture.getFile());

picOut = new FileOutputStream(fileout);

VOut = new ObjectOutputStream(picOut);

VOut.writeObject(paintInfo);

VOut.close();

}

catch(IOException IOe)

{

System.out.println("can not write object");

}

}

}

}//end paintboard

public class pb

{

public static void main(String args[])

{ new paintboard("画图程序"); }

}

Q3: 求一个简单java程序代码，谢谢

public class TestStar {

public static void main(String[] args) {

String star = "*";

for (int i = 0; i 5; i++) {

if (i == 0) {

System.out.print(" " + star);

System.out.println();

}

if (i == 1) {

for (int z = 0; z 4; z++) {

System.out.print(" " + star);

}

System.out.println();

}

if (i == 2) {

System.out.print(" ");

for (int x = 0; x 3; x++) {

System.out.print(" " + star);

}

System.out.println();

}

if (i == 3) {

for (int y = 0; y 2; y++) {

System.out.print(" " + star + " ");

}

}

}

}

}

是好使java画小女孩的代码的 但是我没找到画五角星有什么规律（五角星好象不是正规图形吧？）如果还有什么要求的话 补充问题(如果是用*填充所有的东西 不包括 “ ”的话 我可以重新再给java画小女孩的代码你写一个)

Q4: java究竟怎么在JFrame上画东西？

java在JFrame上画东西，主要是使用paint方法，代码如下：

import java.awt.Color;

import java.awt.Graphics;

import javax.swing.JFrame;

import javax.swing.JPanel;

public class Draw extends JFrame{

JPanel  jPanel=new JPanel();

public Draw() {

            jPanel.setBackground(Color.red);

            add(jPanel); 

   Drawation drawaction=new Drawation();//添加画图，把上面jpanel的设置给覆盖了；要是先添加画图再添加

   add(drawaction);                    //jpanel则把画图覆盖了

  

}

public static void main(String[] args){

             Draw draw=new Draw();

         draw.setTitle("abc");

    draw.setSize(300,300);

    draw.setVisible(true);

    draw.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

}

}

class Drawation extends JPanel{

   public void paintComponent(Graphics g){

     super.paintComponents(g);

 g.drawString("agagh", 50, 45);

   }

}

运行结果如下：

Q5: 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);

}

}

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