免費(fèi)java程序源代碼,免費(fèi)開源代碼

求一個(gè)簡單java程序代碼，謝謝

public class TestStar {

網(wǎng)站建設(shè)哪家好，找創(chuàng)新互聯(lián)！專注于網(wǎng)頁設(shè)計(jì)、網(wǎng)站建設(shè)、微信開發(fā)、微信小程序定制開發(fā)、集團(tuán)企業(yè)網(wǎng)站建設(shè)等服務(wù)項(xiàng)目。為回饋新老客戶創(chuàng)新互聯(lián)還提供了天峨免費(fèi)建站歡迎大家使用！

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 + " ");

}

}

}

}

}

是好使的 但是我沒找到畫五角星有什么規(guī)律（五角星好象不是正規(guī)圖形吧？）如果還有什么要求的話 補(bǔ)充問題(如果是用*填充所有的東西 不包括 “ ”的話 我可以重新再給你寫一個(gè))

求Java源程序代碼，一整套的就可以，不限制類型

//Threader.java

import java.awt.Graphics;

import java.awt.Color;

public class Threader extends java.awt.Canvas implements Runnable {

int myPosition =0;

String myName;

int numberofSteps=600;

boolean keepRunning = true;

//構(gòu)造函數(shù)

public Threader (String inName){

myName=new String (inName);

}

public synchronized void paint(Graphics g){

//為線程競賽畫一條直線

g.setColor (Color.black);

g.drawLine (0,getSize().height/2,getSize().width,getSize().height/2);

//畫競賽者.

g.setColor (Color.yellow);

g.fillOval((myPosition*getSize().width/numberofSteps),0,15,getSize().height);

}

public void stop(){

keepRunning = false;

}

public void run(){

//循環(huán)直到競賽停止

while ((myPosition numberofSteps) keepRunning){

myPosition++;

repaint();

//將當(dāng)前線程睡眠，畫屏函數(shù)工作.

try{

Thread.currentThread().sleep(10);

}catch (Exception e){System.out.println("Exception on sleep");}

}

System.out.println("Threader:"+myName+" has finished the race");

}

}//end class Threader.

//GreatRace.java

import java.awt.Graphics;

import java.awt.GridLayout;

import java.awt.Frame;

public class GreatRace extends java.applet.Applet implements Runnable{

Threader theRacers[];

static int racerCount = 3;

Thread theThreads[];

Thread thisThread;

static boolean inApplet=true;

int numberofThreadsAtStart;

public void init(){

//計(jì)算工作線程的個(gè)數(shù)

numberofThreadsAtStart = Thread.activeCount();

//確定界面的顯示風(fēng)格

setLayout(new GridLayout(racerCount,1));

//確定競賽者的數(shù)量

theRacers = new Threader [racerCount];

theThreads = new Thread[racerCount];

//為每一個(gè)競賽者創(chuàng)建一個(gè)線程

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

theRacers[x]=new Threader ("Racer #"+x);

theRacers[x].setSize(getSize().width,getSize().height/racerCount);

add (theRacers[x]);

theThreads[x]=new Thread(theRacers[x]);

}

}

public void start(){

//啟動所有的線程

for (int x=0;xracerCount;x++)

theThreads[x].start();

//創(chuàng)建一個(gè)對照線程

thisThread= new Thread (this);

thisThread.start();

}

public void stop(){

for (int x= 0;xtheRacers.length;x++){

theRacers[x].stop();

}

}

public void run(){

//循環(huán)直到結(jié)束

while(Thread.activeCount()numberofThreadsAtStart+2){

try{

thisThread.sleep(100);

} catch (InterruptedException e){

System.out.println("thisThread was interrupted");

}

}

//停止競賽

if (inApplet){

stop();

destroy();

}

else

System.exit(0);

}

public static void main (String argv[]){

inApplet=false;

//監(jiān)測在線競賽者的數(shù)量.

if (argv.length0)

racerCount = Integer.parseInt(argv[0]);

//創(chuàng)建一個(gè)新的界面

Frame theFrame = new Frame("The Great Thread Race");

GreatRace theRace = new GreatRace();

theFrame.setSize(400,200);

theFrame.add ("Center",theRace);

theFrame.show();

theRace.init();

theFrame.pack();

theRace.start();

}

}//end class GreatRace.

求java版畫圖程序的源代碼

找到了，很久以前寫的一個(gè)簡單畫圖，呵呵～當(dāng)時(shí)要求用AWT寫，很難受。

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;

/**

* 簡單畫圖板程序

* 好久沒用 AWT 了，寫起來真別扭，如果用 swing 會很舒服，有空再改寫吧。

*

* @author 米強(qiáng)

*

*/

public class TestMain extends Frame {

// 畫板

private Palette palette = null;

// 顯示當(dāng)前顏色的面板

private Panel nonceColor = null;

// 畫筆粗細(xì)

private Label drawWidth = null;

// 畫筆端點(diǎn)的裝飾

private Label drawCap = null;

// 選取顏色按鈕的監(jiān)聽事件類

private ButtonColorAction buttonColorAction = null;

// 鼠標(biāo)進(jìn)入按鈕后光標(biāo)樣式的監(jiān)聽事件類

private ButtonCursor buttonCursor = null;

// 畫筆樣式的監(jiān)聽事件

private ButtonStrokeAction buttonStrokeAction = null;

/**

* 構(gòu)造方法

*

*/

public TestMain() {

// 設(shè)置標(biāo)題欄文字

super("簡易畫圖板");

// 構(gòu)造一個(gè)畫圖板

palette = new Palette();

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

// 畫筆顏色選擇器

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

// 12 個(gè)顏色選擇按鈕

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};

// 顯示當(dāng)前顏色的面板

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);

// 畫筆顏色選擇器

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

// 控制畫筆樣式

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);

// 將畫筆顏色選擇器添加到窗體中

this.add(pane, BorderLayout.NORTH);

// 將畫圖板添加到窗體中

this.add(palette);

// 添加窗口監(jiān)聽，點(diǎn)擊關(guān)閉按鈕時(shí)退出程序

this.addWindowListener(new WindowAdapter() {

public void windowClosing(WindowEvent e) {

System.exit(0);

}

});

// 設(shè)置窗體 ICON 圖標(biāo)

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

// 設(shè)置窗口的大小

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

// 設(shè)置窗口位置，處于屏幕正中央

this.setLocationRelativeTo(null);

// 顯示窗口

this.setVisible(true);

}

/**

* 程序入口

*

* @param args

* 字符串?dāng)?shù)組參數(shù)

*/

public static void main(String[] args) {

new TestMain();

}

/**

* 選取顏色按鈕的監(jiān)聽事件類

* @author 米強(qiáng)

*

*/

class ButtonColorAction implements ActionListener {

public void actionPerformed(ActionEvent e) {

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

nonceColor.setBackground(color_temp);

palette.setColor(color_temp);

}

}

/**

* 鼠標(biāo)進(jìn)入按鈕變換光標(biāo)樣式監(jiān)聽事件類

* @author 米強(qiáng)

*

*/

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));

}

}

/**

* 設(shè)置畫筆的監(jiān)聽事件類

* @author 米強(qiáng)

*

*/

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);

}

}

}

}

}

/**

* 畫板類

*

* @author 米強(qiáng)

*

*/

class Palette extends Panel implements MouseListener, MouseMotionListener {

// 鼠標(biāo) X 坐標(biāo)的位置

private int mouseX = 0;

// 上一次 X 坐標(biāo)位置

private int oldMouseX = 0;

// 鼠標(biāo) Y 坐標(biāo)的位置

private int mouseY = 0;

// 上一次 Y 坐標(biāo)位置

private int oldMouseY = 0;

// 畫圖顏色

private Color color = null;

// 畫筆樣式

private BasicStroke stroke = null;

// 緩存圖形

private BufferedImage image = null;

/**

* 構(gòu)造一個(gè)畫板類

*

*/

public Palette() {

this.addMouseListener(this);

this.addMouseMotionListener(this);

// 默認(rèn)黑色畫筆

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

// 設(shè)置默認(rèn)畫筆樣式

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

// 建立 1280 * 1024 的 RGB 緩存圖象

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

// 設(shè)置顏色

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

// 畫背景

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

}

/**

* 重寫 paint 繪圖方法

*/

public void paint(Graphics g) {

super.paint(g);

// 轉(zhuǎn)換為 Graphics2D

Graphics2D g2d = (Graphics2D) g;

// 獲取緩存圖形 Graphics2D

Graphics2D bg = image.createGraphics();

// 圖形抗鋸齒

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

// 設(shè)置繪圖顏色

bg.setColor(color);

// 設(shè)置畫筆樣式

bg.setStroke(stroke);

// 畫線，從上一個(gè)點(diǎn)到新的點(diǎn)

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

// 將緩存中的圖形畫到畫板上

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

}

/**

* 重寫 update 方法

*/

public void update(Graphics g) {

this.paint(g);

}

/**

* @return stroke

*/

public BasicStroke getStroke() {

return stroke;

}

/**

* @param stroke 要設(shè)置的 stroke

*/

public void setStroke(BasicStroke stroke) {

this.stroke = stroke;

}

/**

* 設(shè)置畫筆粗細(xì)

* @param width

*/

public void setStroke(float width) {

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

}

/**

* 設(shè)置畫筆端點(diǎn)的裝飾

* @param cap 參考 java.awt.BasicStroke 類靜態(tài)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 要設(shè)置的 color

*/

public void setColor(Color color) {

this.color = color;

}

public void mouseClicked(MouseEvent mouseEvent) {

}

/**

* 鼠標(biāo)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) {

}

/**

* 鼠標(biāo)進(jìn)入棋盤

*/

public void mouseEntered(MouseEvent mouseEvent) {

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

}

/**

* 鼠標(biāo)退出棋盤

*/

public void mouseExited(MouseEvent mouseEvent) {

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

}

/**

* 鼠標(biāo)拖動

*/

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) {

}

}

JAVA源程序代碼

您好，寫了一個(gè)程序，求素?cái)?shù)，并將所有素?cái)?shù)存到ArrayList sushu中：

import?java.util.ArrayList;

import?java.util.zip.Inflater;

public?class?sushu?{

public?static?void?main(String[]?args)?{

int?n=50,b=0;

float?a=0,c=0;

ArrayList?sushu=new?ArrayList();

for(int?i=3;i=n;i++){

int?state=0;

for(int?j=2;j(i/2+1);j++){

a=(float)i/(float)j;

//System.out.println(a);

b=(int)a;

//System.out.println(a-b);

c=a-b;

//System.out.println(c);

if(c==0){state=1;break;}

}

if(state==0)sushu.add(i);

}

System.out.println(sushu);

}

}

輸出結(jié)果為：[3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47]

當(dāng)前名稱：免費(fèi)java程序源代碼,免費(fèi)開源代碼
網(wǎng)站URL：http://muchs.cn/article0/hcipio.html

成都網(wǎng)站建設(shè)公司_創(chuàng)新互聯(lián)，為您提供品牌網(wǎng)站制作、網(wǎng)站排名、域名注冊、App設(shè)計(jì)、網(wǎng)站內(nèi)鏈、小程序開發(fā)

廣告

聲明：本網(wǎng)站發(fā)布的內(nèi)容（圖片、視頻和文字）以用戶投稿、用戶轉(zhuǎn)載內(nèi)容為主，如果涉及侵權(quán)請盡快告知，我們將會在第一時(shí)間刪除。文章觀點(diǎn)不代表本網(wǎng)站立場，如需處理請聯(lián)系客服。電話：028-86922220；郵箱：631063699@qq.com。內(nèi)容未經(jīng)允許不得轉(zhuǎn)載，或轉(zhuǎn)載時(shí)需注明來源： 創(chuàng)新互聯(lián)