public class Flower {
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public static void main(String[] args) {
System.out.println("花朵绽放中...");
for (int i = 0; i 10; i++) {
System.out.println("芹液枯第" + (i + 1) + "朵埋瞎花开了!嫌洞");
}
}
}
新建一个java文件,取名叫做PaintJava.java
代码如下:
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;//画笔大镇带小
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);郑派
//(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;
// *工具御丛芦面板--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 PaintJava
{
public static void main(String args[])
{ new paintboard("画图程序"); }
}
累啊..给分吧...!!
import java.awt.*;
import java.applet.*;
import java.awt.event.*;
import javax.swing.*;
public class Fireworks extends Applet implements MouseListener, Runnable {
int x, y;//记录鼠标点击的坐标
int top, point;//好像没用到
public void init() {
x = 0;
y = 0;
setBackground(Color.black);// 设置背景色为黑色
addMouseListener(this);//添加鼠标监听
}
public void paint(Graphics g) {
}
public static void main(String args[]) {
Fireworks applet = new Fireworks();
JFrame frame = new JFrame("TextAreaNew");
frame.addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {//右上角的叉
System.exit(0);
}
});
frame.add(applet, BorderLayout.CENTER);
frame.setSize(800, 400);//程序的框框大小
applet.init();
applet.start();
frame.setVisible(true);//
}
public void run() {
// 变量初始化
Graphics g1;
g1 = getGraphics();//这是画笔,得到一个画笔
int y_move, y_click, x_click;
int v;//用于计算等待的时间
x_click = x;
y_click = y;//把点击的坐标中败保存下来,因为其它线程会去改这两个坐标。
y_move = 400;//用来计算变动的那个点,现在是屏幕的最大高度
v = 3;
int r, g, b;
while (y_move y_click)//如果点击的位置小于最大高度。
{
g1.setColor(Color.black);//画笔设成黑色
g1.fillOval(x_click, y_move, 5, 5);//画圆,圆点在点击的X轴,程序界面的最高点,长为5,宽为5
y_move -= 5;//最高点-5
r = (((int) Math.round(Math.random() * 4321)) % 200) + 55;
g = (((int) Math.round(Math.random() * 4321)) % 200) + 55;
b = (((int) Math.round(Math.random() * 4321)) % 200) + 55;//rgb是光的三原色,这个就是烟花产生的颜色,这里定义成随机的,但在一个范围里
g1.setColor(new Color(r, g, b));//把画笔改成那个颜色
g1.fillOval(x_click, y_move, 5, 5);//画一个亮拿这样的圆
for (int j = 0; j = 10; j++) {
if (r 55)
r -= 20;
if (g 55)
g -= 20;
if (b 55)
b -= 20;
g1.setColor(new Color(r, g, b));
g1.fillOval(x_click, y_move + j * 5, 5, 5);//这一段都是改变颜色,然后画圆的
}
g1.setColor(Color.black);
g1.fillOval(x_click, y_move + 5 * 10, 5, 5);//把上一次画的彩色圆,用黑色画一遍,就能让它消失在背景里
try {
Thread.currentThread().sleep(v++);//让程序等一下,让你看到效果,不然画完的东西一下就不见了,你看不清。
} catch (InterruptedException e) {
}
}//上面这段代码是烟花的升上去的那一串东西的卖键颤效果
for (int j = 12; j = 0; j--) {
g1.setColor(Color.black);
g1.fillOval(x_click, y_move + (j * 5), 5, 5);
try {
Thread.currentThread().sleep((v++) / 3);
} catch (InterruptedException e) {
}
}//让最后的那串东西的点消失
y_move = 400;
g1.setColor(Color.black);
while (y_move y_click) {
g1.fillOval(x_click - 2, y_move, 9, 5);
y_move -= 5;
}//这段不太清楚是干什么的,我把它去掉,看不出效果的变化
v = 15;
for (int i = 0; i = 25; i++) {
r = (((int) Math.round(Math.random() * 4321)) % 200) + 55;
g = (((int) Math.round(Math.random() * 4321)) % 200) + 55;
b = (((int) Math.round(Math.random() * 4321)) % 200) + 55;
g1.setColor(new Color(r, g, b));
g1.drawOval(x_click - 3 * i, y_click - 3 * i, 6 * i, 6 * i);
if (i 23) {
g1.drawOval(x_click - 3 * (i + 1), y_click - 3 * (i + 1),
6 * (i + 1), 6 * (i + 1));
g1.drawOval(x_click - 3 * (i + 2), y_click - 3 * (i + 2),
6 * (i + 2), 6 * (i + 2));
}//上面这段是画爆炸的效果
try {
Thread.currentThread().sleep(v++);//停一下,看效果
} catch (InterruptedException e) {
}
g1.setColor(Color.black);
g1.drawOval(x_click - 3 * i, y_click - 3 * i, 6 * i, 6 * i);//然后画黑圈,相当于让彩圈消失。
}
}
public void mousePressed(MouseEvent e) {//点击从这里开始~~~~~~~~~~~~~~
x = e.getX();
y = e.getY();//得到鼠标点击的坐标
Thread one = new Thread(this);//新建一个线程
one.start();//启动这个线程,到上面的run方法
one = null;//把这个线程置为空,让它执行完以后就释放
}
如果你想一下自己写要怎样写这个程序,就很容易理解这个程序了。
一直从下向上画圆,然后把下面的圆擦掉,就能得到一个向上升的烟花效果,
爆炸效果就是先画小圆再画大圆,然后擦掉小圆,再擦掉大圆。
Java程序:
import java.awt.Graphics;
import javax.swing.JFrame;
import javax.swing.JPanel;
public class Exercise12_10 extends JFrame {
private static final long serialVersionUID = 1L;
private CanvasPanel pnlCanvas = null;
public Exercise12_10(){
super("Exercise12_10");
pnlCanvas = new CanvasPanel();
this.add(pnlCanvas);
this.setSize(250, 250);
this.setVisible(true);
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
public static void main(String[] args) {
new Exercise12_10();
}
}
class CanvasPanel 察并蠢extends JPanel{
private static final long serialVersionUID = 1L;
public void paint(Graphics g){
int W = this.getWidth();
int H = this.getHeight();
int i, j;
int width = W / 8;
int height = H / 8;
int x, y;
for(i=0; i9; i++){
for(j=0; j8; j++){
x = j * width;
y = i * height;
if((i+j)%2 == 0){//画矩形
g.drawRect(x, 蔽肆y, width, height);
}
else{//填充矩形败陪
g.fillRect(x, y, width, height);
}
}
}
}
}
运行结果如图所示: