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别踩白块源代码java js别踩白块

IT技术线程

JAVA中为什么画出的图形没法显示出来？你这个是代码里面拼写错误了，改成下面的可以显示
class DontStepOnWhitePiece extends JPanel
{
public void paint(Graphics g)//上面的这里拼写错误 ， panit
{
super.paint(g);
g.setColor(Color.black);
g.drawRect(0, 0, 100, 100);
}
java初学者如何编写别踩黑白块 ， 求编写内容 在eclipse里，是要有图形用户界面的，别乱复制小弟?。蠢茨阏娴氖浅跹О 。橄罄郌riut定义在哪个包中都可以，但是在它的子类中要导入，importFruit这个类，然后在Fruit这个类中定义一个抽象方法harvest（），不做任何实现就可以啦
JAVA别踩白块怎么让一行除了黑块其他都是白块import java.awt.Color;import java.awt.GridLayout;import javax.swing.JButton;import javax.swing.JFrame; public class MiGong extends JFrame{private static final long serialVersionUID = 1L;private static final int ROW = 8;private static final int COL = 9;int[][] map = {{2,0,1,0,0,0,1,0},{0,0,1,0,0,0,1,0},{0,0,1,0,1,1,0,0},{0,1,1,1,0,0,0,0},{0,0,0,1,0,0,0,0},{0,1,0,0,0,1,0,1},{0,1,1,1,1,0,0,1},{1,1,0,0,0,1,0,1},{1,1,0,0,0,0,0,3}};public static void main ( String args[] ){new MiGong ();}public MiGong (){setTitle ("迷宫");setLayout (new GridLayout (ROW, COL, 0, 0));for ( int h = 0; hCOL; h++ ){for ( int g = 0; gROW; g++ ){switch (map[h][g]){case 0:JButton p = new JButton ();p.setBackground (Color.red);add (p);break;case 1:JButton q = new JButton ();q.setBackground (Color.blue);add (q);break;case 2:JButton m = new JButton ("入口");m.setBackground (Color.green);add (m);break;case 3:JButton n = new JButton ("出口");n.setBackground (Color.green);add (n);break;}}}pack ();setLocationRelativeTo (null);setDefaultCloseOperation (EXIT_ON_CLOSE);setVisible (true);}}
典型Java线程池的代码及其各部分功能介绍（ ）根据xml文件来管理线程池别踩白块源代码java的最大最小线程数（ ）对线程池通过Timer定期扫描以防止线程未激活 （ ）通过某一个变量（本程序中是freeThreadCount）来得到空闲线程别踩白块源代码java的数目一 配置xml（listen xml）是?xml version= encoding= UTF ?configConsumeThreadPoolminPools /minPools　! 线程池最小线程 maxPools /maxPools! 线程池最大线程 checkThreadPeriod /checkThreadPeriod　! 检查线程池中线程的周期 分钟 /ConsumeThreadPool/config二 对于ConsumeThreadPoolPara的javabean:import java io *;public class ConsumeThreadPoolPara implements Serializable{private int minPools;private int maxPools;private int checkThreadPeriod;public int getMinPools(){return minPools;}public int getMaxPools(){return maxPools;}public int getCheckThreadPeriod(){return checkThreadPeriod;}public void setMinPools(int minPools){this minPools = minPools;}public void setMaxPools(int maxPools){this maxPools = maxPools;}public void setCheckThreadPeriod(int checkThreadPeriod){this checkThreadPeriod = checkThreadPeriod;}public String toString(){return minPools+ + maxPools+ +checkThreadPeriod;}public ConsumeThreadPoolPara() {}public static void main(String[] args) {ConsumeThreadPoolPara consumeThreadPool = new ConsumeThreadPoolPara();}}三 解析xml程序代码（生成ConsumeThreadPoolPara）使用jdom解析 import jdom *;import jdom input SAXBuilder;import java io *;import java util *;public class ParseConfig {static Hashtable Listens = null;static ConnPara connpara = null;static ConsumeThreadPoolPara consumeThreadPoolPara = null;private static String configxml = listen xml ;static{getConsumeThreadPoolPara();　//得到消费的线程池的参数}/*** 装载文档* @return 返回根结点* @throws JDOMException*/public static Element loadDocument() throws JDOMException{SAXBuilder parser = new SAXBuilder(); // 新建立构造器try {Document document = parser build(configxml);Element root = document getRootElement();return root;}catch(JDOMException e){logger error( listen xml文件格式非法别踩白块源代码java！ );throw new JDOMException();}}public static ConsumeThreadPoolPara getConsumeThreadPoolPara(){if(consumeThreadPoolPara ==null){try {Element root = loadDocument();Element consumeThreadPool = root getChild( ConsumeThreadPool );if (consumeThreadPool != null) { //代表有数据库配置consumeThreadPoolPara = new ConsumeThreadPoolPara();Element minPools = consumeThreadPool getChild( minPools );consumeThreadPoolPara setMinPools(Integer parseInt(minPools getTextTrim()));Element maxPools = consumeThreadPool getChild( maxPools );consumeThreadPoolPara setMaxPools(Integer parseInt(maxPools getTextTrim()));Element checkThreadPeriod = consumeThreadPool getChild( checkThreadPeriod );consumeThreadPoolPara setCheckThreadPeriod(Integer parseInt(checkThreadPeriod getTextTrim()));}}catch (JDOMException e) {}}return consumeThreadPoolPara;}}四 线程池源代码import java util *;/*** pTitle: 线程池/p* pDescription: 采集消费模块/p* pCopyright: Copyright (c) /p* pCompany: /p* @author 张荣斌* @version */public class ThreadPool {private static int minPools = ; //最小连接池数目private static int maxPools = ; //最大连接池数目private static int checkThreadPeriod = ; //检查连接池的周期ArrayList m_ThreadList;　//工作线程列表LinkedList m_RunList = null;　//工作任务列表int totalThread = ;　//总线程数static int freeThreadCount = ;　//未被使用的线程数目private java util Timer timer = null;　//定时器static Object o = new Object();static{　//先初始化线程池的参数ConsumeThreadPoolPara consumeThreadPoolPara = ParseConfig getConsumeThreadPoolPara();if(consumeThreadPoolPara!=null){minPools = consumeThreadPoolPara getMinPools();maxPools = consumeThreadPoolPara getMaxPools();checkThreadPeriod = consumeThreadPoolPara getCheckThreadPeriod()* * ;}}public void setMinPools(int minPools){this minPools = minPools;}public void setMaxPools(int maxPools){this maxPools = maxPools;}public void setCheckThreadPeriod(int checkThreadPeriod){this checkThreadPeriod = checkThreadPeriod;}public ThreadPool() {m_ThreadList=new ArrayList();m_RunList=new LinkedList();for(int i= ;iminPools;i++){WorkerThread temp=new WorkerThread();totalThread = totalThread + ;m_ThreadList add(temp);temp start();try{Thread sleep( );}catch(Exception e){}}timer = new Timer(true);　//启动定时器timer schedule(new CheckThreadTask(this) checkThreadPeriod);}/*** 当有一个工作来的时候启动线程池的线程* 当空闲线程数为 的时候 看总线程是否小于最大线程池的数目 就new一个新的线程 否则sleep 直到有空闲线程为止;* 当空闲线程不为 则将任务丢给空闲线程去完成* @param work*/public synchronized void run(String work){if (freeThreadCount == ) {if(totalThreadmaxPools){WorkerThread temp = new WorkerThread();totalThread = totalThread + ;m_ThreadList add(temp);temp start();synchronized(m_RunList){m_RunList add(work);m_RunList notify();}}else{while (freeThreadCount == ) {try {Thread sleep( );}catch (InterruptedException e) {}}synchronized(m_RunList){m_RunList add(work);m_RunList notify();}}} else {synchronized(m_RunList){m_RunList add(work);m_RunList notify();}}}/*** 检查所有的线程的有效性*/public synchronized void checkAllThreads() {Iterator lThreadIterator = erator();while (lThreadIterator hasNext()) { //逐个遍厉WorkerThread lTestThread = (WorkerThread) lThreadIterator next();if (! (lTestThread isAlive())) { //如果处在非活动状态时lTestThread = new WorkerThread(); //重新生成个线程lTestThread start(); //启动}}}/*** 打印调试信息*/public void printDebugInfo(){System out println( totalThread= +totalThread);System out println( m_ThreadList size()= +m_ThreadList size());}/**** pTitle: 工作线程类/p* @author 张荣斌* @version */class WorkerThread extends Thread{boolean running = true;String work;public void run(){while(running){synchronized(o){freeThreadCount++;}synchronized(m_RunList){while(m_RunList size() == ){try{m_RunList wait();if(!running) return;}catch(InterruptedException e){} lishixinzhi/Article/program/Java/gj/201311/27379

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