java绘画_java 实现简单画图功能(简单点的)

Ⅰ java如何实现多线程绘图

首先，如果你只是要实现电子时钟，根本就不需要用到多线程。
如果你真的是要使用，就新建一个类，实现Runnable接口就是了。
如：
class MyThread1 implements Runnable{
public MyThread(){
}
public void run(){
}
}

使用的时候，就：
Thread myThread=new Thread(new MyThread());
myThread.start();

如果要画图，你就直接把组件通过构造方法传到MyThread中就是了

Ⅱ JAVA怎么在背景图片上绘图

画枯掘圆图散旅只是一个简没塌单的做图小工具
不能设置为透明
你可以最其他软件做 PHOTOSHOP或是FIREWORKS

Ⅲ java 绘图时如何用特定画笔字符绘画一个矩形

publicclassYugi{
铅纤publicstaticvoidmain(String[]args){
intc=10;
intk=5;
for(inti=0;i<k;i++){
for(intj=0;j<c;j++){
System.out.print("*");
早激帆}
System.out.println();
}
陆雹}
}

Ⅳ 在Java中如何用程序画一个圆

使用java画圆要用到绘图类Graphics，下面是实例代码和运行效果：

packagecom.dikea.demo01;

importjava.awt.*;

importjavax.swing.*;

//java绘图原理

publicclassdemo_01extendsJFrame{

MyPanelmp=null;

publicstaticvoidmain(String[]args){

//TODO自动生成的方法存根

demo_01demo01=newdemo_01();

}

publicdemo_01(){

mp=newMyPanel();

this.add(mp);

this.setSize(400,300);

this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

this.setVisible(true);

}

//定义一个MyPanel面板，用于绘图区域

classMyPanelextendsJPanel{

//覆盖JPanel

//Graphics是绘图的重要类，可以理解成一支画笔

publicvoidpaint(Graphicsg){

//1.调用父类函数完成初始化任务

//这句话不可以少

super.paint(g);

//先画出一个圆圈

g.drawOval(100,100,30,30);

}

代码复制进ide编程工具，运行效果如下：

Ⅳ 用Java一个简单的画图程序

简单啊，先引入相应的组件包import java.awt.*;import java.awt.event.*;import javax.swing.*;写的类要继承JFrame 接下来就是调用刚刚引入包版里面的方法了，权paint();这是就思路了。

Ⅵ java绘图代码

画笔定义

importjava.awt.*;

/**

*@authorHardneedl

interfaceBrush{

voiddoPaint(Graphicsg);

}

画笔工厂

importjava.awt.*;

/**

*@authorHardneedl

classBrushFactory{

staticfinalintLINE_BRUSH=0;

staticfinalintELLIPSE_BBRUSH=1;

staticfinalintRECTANGLE_BRUSH=2;

staticfinalintPOLYGON_BRUSH=3;

staticfinalintELLIPSE_FILL_BRUSH=4;

staticfinalintRECTANGLE_FILL_BRUSH=5;

staticfinalBrushNO=newNONE();

staticfinalBrushLINE=newLineBrush();

staticfinalBrushELLIPSE=newEllipseBrush();

staticfinalBrushELLIPSE_FILL=newEllipseFillBrush();

staticfinalBrushRECTANGLE=newRectangleBrush();

staticfinalBrushRECTANGLE_FILL=newRectangleFillBrush();

staticfinalBrushPOLYGON=newPolygonBrush();

BrushgetBrush(intbrushIndex){

switch(brushIndex){

caseLINE_BRUSH:returnLINE;

caseELLIPSE_BBRUSH:returnELLIPSE;

caseRECTANGLE_BRUSH:returnRECTANGLE;

caseRECTANGLE_FILL_BRUSH:returnRECTANGLE_FILL;

casePOLYGON_BRUSH:returnPOLYGON;

caseELLIPSE_FILL_BRUSH:returnELLIPSE_FILL;

default:returnNO;

}

{

publicvoiddoPaint(Graphicsg){

Graphicsgg=g.create();

gg.setColor(Color.BLACK);

gg.drawLine(70,70,200,200);

gg.dispose();

}

{

publicvoiddoPaint(Graphicsg){

Graphicsgg=g.create();

gg.setColor(Color.PINK);

gg.drawOval(100,100,200,50);

gg.dispose();

}

{

publicvoiddoPaint(Graphicsg){

Graphicsgg=g.create();

gg.setColor(Color.PINK);

gg.fillOval(100,100,200,50);

gg.dispose();

}

{

publicvoiddoPaint(Graphicsg){

Graphicsgg=g.create();

gg.setColor(Color.RED);

gg.drawPolygon(newint[]{48,50,244,483,310},newint[]{36,192,281,302,77},5);

gg.dispose();

}

{

publicvoiddoPaint(Graphicsg){

Graphicsgg=g.create();

gg.setColor(Color.BLUE);

gg.drawRect(70,70,100,100);

gg.dispose();

}

{

publicvoiddoPaint(Graphicsg){

Graphicsgg=g.create();

gg.setColor(Color.BLUE);

gg.fillRect(70,70,100,100);

gg.dispose();

}

{

publicvoiddoPaint(Graphicsg){

Graphicsgg=g.create();

gg.setColor(Color.RED);

gg.drawString("Nobrushselected!",20,30);

gg.dispose();

}

图形界面

importjavax.swing.*;

importjavax.swing.border.*;

importjava.awt.*;

importjava.awt.event.*;

/**

*@authorHardneedl

finalclassDrawextendsJFrame{

publicStringgetTitle(){return"frametitle";}

=newDimension(600,400);

(){returnsize;}

publicDimensiongetMaximumSize(){returnsize;}

publicDimensiongetMinimumSize(){returnsize;}

publicDimensiongetSize(){returnsize;}

=newLineAction();

=newRectangleAction();

=newRectangleFillAction();

=newEllipseAction();

=newEllipseFillAction();

=newPolygonAction();

=newBrushFactory();

privatestaticBrushbrush;

=newJComponent(){

protectedvoidpaintComponent(Graphicsg){

super.paintComponent(g);

if(brush!=null){

brush.doPaint(g);

}

publicBordergetBorder(){returnBorderFactory.createLineBorder(Color.BLACK,2);}

};

Draw()throwsHeadlessException{

init();

attachListeners();

doLay();

}

privatevoidinit(){

JMenuBarmenuBar=newJMenuBar();

menuBar.add(newJMenu(lineAction));

JMenuelp=newJMenu("椭圆");

elp.add(ellipseAction);

elp.add(ellipseFillAction);

menuBar.add(elp);

JMenurct=newJMenu("矩形");

rct.add(rectangleAction);

rct.add(rectangleFillAction);

menuBar.add(rct);

menuBar.add(newJMenu(polygonAction));

setJMenuBar(menuBar);

}

privatevoidattachListeners(){

setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

}

privatevoiddoLay(){

Containercontainer=getContentPane();

container.add(canvas,BorderLayout.CENTER);

JPanelbuttonsPane=newJPanel(newGridLayout(2,3));

buttonsPane.add(newJButton(lineAction));

buttonsPane.add(newJButton(ellipseAction));

buttonsPane.add(newJButton(rectangleAction));

buttonsPane.add(newJButton(polygonAction));

buttonsPane.add(Box.createHorizontalBox());

buttonsPane.add(newJButton(ellipseFillAction));

buttonsPane.add(newJButton(rectangleFillAction));

container.add(buttonsPane,BorderLayout.SOUTH);

pack();

setVisible(true);

}

{

privateRectangleAction(){super("空心矩形");}