Java多線程:實現方式

在Java中, 多線程的實現有兩種方式：
擴充java.lang.Thread類
實現java.lang.Runnable介面
方法1

/** * @Description: 繼承Thread類, 實現多線程. * @author snoopy * @blog http://blog.csdn.net/huang_xw */package basic.a_start;import org.apache.log4j.Logger;public class TestThread extends Thread {private static Logger logger = Logger.getLogger(TestThread.class);public static void main(String[] args) {TestThread test = new TestThread();logger.debug("在Main線程中啟動線程!");test.start();}public void run() {logger.debug("線上程中運行!");}}

方法2

/** * @Description: 測試Runnable類實現的多線程程式 * @author snoopy * @blog http://blog.csdn.net/huang_xw */package basic.a_start;import org.apache.log4j.Logger;public class TestRunnable {private static Logger logger = Logger.getLogger(TestRunnable.class);public static void main(String[] args) {// 1. 將任務處理代碼移到實現了Runnable介面的類的run方法中。// 2. 建立任務類的一個對象// 3. 由Runnable建立Thread對象// 4. 啟動線程ImpRunnable r1 = new ImpRunnable();ImpRunnable r2 = new ImpRunnable();// 給線程命名有兩種方式// 1.虛擬機器命名 2.用Thread類的構造方法Thread t1 = new Thread(r1, "線程1");Thread t2 = new Thread(r2, "線程2");t1.start();t2.start();}}class ImpRunnable implements Runnable {private static Logger logger = Logger.getLogger(ImpRunnable.class);// 當線程目標run()方法結束時該線程完成。public void run() {for (int i = 0; i < 10; i++) {// for迴圈用來類比一個耗時的操作for (long k = 0; k < 100000000; k++);// 擷取當前線程的對象的方法是: Thread.currentThread()logger.debug(Thread.currentThread().getName() + " 運行" + ": 第" + i + "次");}}}