隨意畫等功能的java畫圖程序,根據java代碼畫類圖

本文目錄一覽：

1、用Java一個簡單的畫圖程序
2、java 繪圖程序
3、java 實現簡單畫圖功能(簡單點的)
4、用Java編寫一個繪製圖形的小程序
5、如何實現java畫圖程序,並可在已畫的圖上添加文字等，求大神T-T

用Java一個簡單的畫圖程序

下面是我以前做的小程序，希望能給你點幫助！

package menu;

import java.awt.*;

import java.awt.event.*;

import javax.swing.*;

public class DaYin extends JFrame implements ActionListener{

public DaYin() {

Container c=this.getContentPane();

c.setLayout(new BorderLayout());

JMenuBar jmb=new JMenuBar();

JMenu jm=null;

jm=new JMenu(“文件”);

jmb.add(jm);

jm=new JMenu(“編輯”);

jmb.add(jm);

jm=new JMenu(“打印”);

JMenuItem jmi=new JMenuItem(“打印預覽”);

jmi.addActionListener(this);

jm.add(jmi);

jmb.add(jm);

jm=new JMenu(“幫助”);

jmb.add(jm);

this.setJMenuBar(jmb);

this.setSize(1024,768);

this.setVisible(true);

this.addWindowListener(new WindowAdapter(){

public void windowClosing(WindowEvent e){

System.exit(0);

}

});

}

public static void main(String[] args) {

new DaYin();

}

public void update(Graphics g){

g.setColor(Color.black);

String title[]={“摘要”,”科目”,”子目或戶名”,”借方金額”,”貸方金額”};

String danwei[]={“千”,”百”,”十”,”萬”,”千”,”百”,”十”,”元”,”角”,”分”};

int csx=200;//打印x的初始坐標

int csy=200;//打印y的初始坐標

int x=csx;

int y=csy;

int a=x+20;//打印字體x的初始坐標

int b=y+20;//打印字體y的初始坐標

int row=7;//一共打印出幾條橫線

int cul=5;//一共打印出幾條豎線

int hangju=30;//線與線之間的縱向間距

int lieju=100;//線與線之間的橫向間距

int yy=hangju*row+y;

int c=yy+20;

g.setFont(new Font(“行楷”,Font.TYPE1_FONT,24));

g.drawString(“記賬憑證”, x+160, y-40);//打印出記賬憑證這幾個字

g.drawLine(x+100, y-30, x+340, y-30);//打印出記賬憑證下面的那條線

g.setFont(new Font(“行楷”,Font.TYPE1_FONT,13));

g.drawString(“年月日第_______號”, x+260, y-10);

//g.drawLine(x+430, y-10, x+470, y-10);

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

g.drawLine(x, y, cul*lieju+x+25, y);//此循環用於畫出表格的行

if(i==0)

y+=hangju*2;

else

y+=hangju;

}

y=csy;

g.drawLine(x+lieju*3, y+hangju, cul*lieju+x, y+hangju);//打印出第一行半的橫線

for(int j=0;j=cul;j++){

g.drawLine(x, y, x, row*hangju+y);//此循環用於畫出表格的列

x+=lieju;

}

x=csx;

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

g.setColor(Color.red);//設置顏色

g.setFont(new Font(“”,Font.TYPE1_FONT,13));//設置表頭字體

if(z3)

g.drawString(title[z], a, b+hangju/2);

else

g.drawString(title[z], a, b);//為表格添加表頭

a+=lieju;

}//76-89打印出一個表格形狀

int xx=lieju*3+x+10;

for(int v=0;v=9;v++){

g.drawLine(xx, y+hangju, xx, row*hangju+y+hangju);//此循環用於畫出表格的列

g.setFont(new Font(“”,Font.TYPE1_FONT,11));

g.drawString(danwei[v], xx-10, y+hangju+20);//為表格添加表頭

if(v%2==0)

g.setColor(Color.red);//設置顏色

else

g.setColor(Color.BLUE);//設置顏色

xx+=10;

}

for(int n=0;n9;n++){

g.drawLine(xx, y+hangju, xx, row*hangju+y+hangju);//此循環用於畫出表格的列

g.drawString(danwei[n],xx-10, y+hangju+20);//為表格添加表頭

if(n%2==0)

g.setColor(Color.red);//設置顏色

else

g.setColor(Color.BLUE);//設置顏色

xx+=10;

}

g.drawString(danwei[9],xx-10, y+hangju+20);

g.setColor(Color.black);//設置顏色

for(int i=0;i=1;i++){

g.drawLine(x,yy , cul*lieju+x, yy);//此循環用於畫出表格的行

yy+=hangju;

}

yy=hangju*row+y;

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

g.drawLine(x, yy, x, (row+1)*hangju+y);//此循環用於畫出表格的列

if(j0){

x+=lieju;

}else{

x+=lieju*3;

}

}//112-128打印出表格的最後一行單元格

x=csx;

g.setFont(new Font(“”,Font.TYPE1_FONT,13));

g.drawString(“合計”,x+60, c);

g.drawString(“會計主管記賬出納審核制證”, x+30, yy+50);

g.drawLine(cul*lieju+x+25, y, cul*lieju+x+25, (row+1)*hangju+y);//打印出最後一列

g.drawString(“記”,cul*lieju+x+6, y+15);

g.drawString(“賬”, cul*lieju+x+6, y+35);

g.drawString(“√”, cul*lieju+x+6, y+55);//134-136為最後一列寫入字體

g.drawString(“附”,cul*lieju+x+35, y+75);

g.drawString(“件”, cul*lieju+x+35, y+95);

g.drawString(“張”, cul*lieju+x+35, y+175);//134-136為最後一列後寫入字體

}

public void actionPerformed(ActionEvent e) {

// TODO Auto-generated method stub

if(e.getActionCommand().equals(“打印預覽”)){

this.repaint();

}

使用drawLine()做了一個記賬憑證。

執行點擊”打印”子菜單”打印預覽”就可顯示出我們所畫的”記賬憑證表”

希望這個小程序能夠給你點靈感

java 繪圖程序

我基於你原來畫圖的方法，添加了事件觸發的命令b[j].setActionCommand(“b” + j);否則你不能在事件響應處理的方法中使用e.getActionCommand()，而且字符串的比較用equals方法比較好。現在可以運行了，你可以看一下：

import java.applet.Applet;

import java.awt.*;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

public class drawing extends Applet implements ActionListener {

Button b[] = new Button[5];

String fontname = “仿宋_GB2312”;

int style = Font.PLAIN;

int size = 24;

int index = 0;

Font myfont;

public void init() {

setSize(700,700);

myfont = new Font(fontname, style, size);

b[0] = new Button(“扇形”);

b[1] = new Button(“圓形”);

b[2] = new Button(“三角形”);

b[3] = new Button(“長方形”);

b[4] = new Button(“橢圓形”);

for (int j = 0; j b.length; j++) {

b[j].setBounds(10, 10, 50, 20);

b[j].addActionListener(this);

b[j].setActionCommand(“b” + j);

add(b[j]);

}

public void actionPerformed(ActionEvent e) {

if (e.getActionCommand().equals(“b0”)) {

index = 0;

repaint();

}

if (e.getActionCommand().equals(“b1”)) {

index = 1;

repaint();

}

if (e.getActionCommand().equals(“b2”)) {

index = 2;

repaint();

}

if (e.getActionCommand().equals(“b3”)) {

index = 3;

repaint();

}

if (e.getActionCommand().equals(“b4”)) {

index = 4;

repaint();

}

public void paint(Graphics g) {

switch (index) {

case 0:

g.fillArc(0, 60, 80, 60, 30, 120);

break;

case 1:

g.drawOval( 300, 50, 60, 60);

break;

case 2:

Polygon filledPolygon = new Polygon();

filledPolygon.addPoint(380, 50);

filledPolygon.addPoint(380, 110);

filledPolygon.addPoint(450, 90);

g.drawPolygon(filledPolygon);

break;

case 3:

g.drawRect( 200, 50, 80, 60);

break;

case 4:

g.drawOval(100, 50, 80, 60);

break;

default:

g.fillArc(0, 60, 80, 60, 30, 120);

break;

}

* public void paint(Graphics g) { g.fillArc( 0, 60, 80, 60, 30, 120);

* //繪製扇形 g.drawOval( 100, 50, 80, 60); g.drawRect( 200, 50, 80, 60);

* g.drawOval( 300, 50, 60, 60); Polygon filledPolygon=new Polygon();

* filledPolygon.addPoint(380,50); filledPolygon.addPoint(380,110);

* filledPolygon.addPoint(450,90); g.drawPolygon(filledPolygon); }

}

java 實現簡單畫圖功能(簡單點的)

樓主給你一個我編的，直接保存成pb.java編譯運行，就是你要的畫圖功能

____________________________________________________________________

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;//畫筆大小

int Econ = 5;//橡皮大小

int toolFlag = 0;//toolFlag:工具標記

//toolFlag工具對應表：

//（0–畫筆）；（1–橡皮）；（2–清除）；

//（3–直線）；（4–圓）；（5–矩形）；

Color c = new Color(0,0,0); //畫筆顏色

BasicStroke size = new BasicStroke(con,BasicStroke.CAP_BUTT,BasicStroke.JOIN_BEVEL);//畫筆粗細

Point cutflag = new Point(-1, -1, c, 6, con);//截斷標誌

Vector paintInfo = null;//點信息向量組

int n = 1;

FileInputStream picIn = null;

FileOutputStream picOut = null;

ObjectInputStream VIn = null;

ObjectOutputStream VOut = null;

// *工具面板–畫筆，直線，圓，矩形，多邊形,橡皮，清除*/

Panel toolPanel;

Button eraser, drLine,drCircle,drRect;

Button clear ,pen;

Choice ColChoice,SizeChoice,EraserChoice;

Button colchooser;

Label 顏色,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();

/*各工具按鈕及選擇項*/

//顏色選擇

ColChoice = new Choice();

ColChoice.add(“black”);

ColChoice.add(“red”);

ColChoice.add(“blue”);

ColChoice.add(“green”);

ColChoice.addItemListener(this);

//畫筆大小選擇

SizeChoice = new Choice();

SizeChoice.add(“1”);

SizeChoice.add(“3”);

SizeChoice.add(“5”);

SizeChoice.add(“7”);

SizeChoice.add(“9”);

SizeChoice.addItemListener(this);

//橡皮大小選擇

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(“畫筆”);

drLine = new Button(“畫直線”);

drCircle = new Button(“畫圓形”);

drRect = new Button(“畫矩形”);

openPic = new Button(“打開圖畫”);

savePic = new Button(“保存圖畫”);

colchooser = new Button(“顯示調色板”);

//各組件事件監聽

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);

顏色 = new Label(“畫筆顏色”,Label.CENTER);

大小B = new Label(“畫筆大小”,Label.CENTER);

大小E = new Label(“橡皮大小”,Label.CENTER);

//面板添加組件

toolPanel.add(openPic);

toolPanel.add(savePic);

toolPanel.add(pen);

toolPanel.add(drLine);

toolPanel.add(drCircle);

toolPanel.add(drRect);

toolPanel.add(顏色); 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,”打開圖畫”,FileDialog.LOAD);

openPicture.setVisible(false);

savePicture = new FileDialog(this,”保存圖畫”,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://畫筆

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://畫直線

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

g2d.draw(line2);

break;

case 4://畫圓

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://畫矩形

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://截斷，跳過

i=i+1;

break;

default :

}//end switch

}//end if

}//end for

}

public void itemStateChanged(ItemEvent e)

{

if(e.getSource()==ColChoice)//預選顏色

{

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)//畫筆大小

{

String selected = SizeChoice.getSelectedItem();

if(selected==”1″)

{

con = 1;