一 前面一种比较简洁。后面一种更灵活，因为java可以实现多个接口，但是只能继承一个类
二 适合于资源的共享
如果不涉及 多线程直接资源共享用Thread 比较好，否则实现Runable较好
Thread其实也是实现了Runnable接口 Thread中的start()方法的定i，可以发现此方法中使用了private native void start0()
一种是继承Thread 这种类可以直接调用运行 见：ExtendThread
ExtendThread extends Thread
ExtendThread.start()
实现Runable 见：RunnableThread
RunnableThread et=new RunnableThread("yang");
Thread th=new Thread(et);
th.start();
ExtendThread
package thread.test;
//
public class ExtendThread extends Thread {
private String name;
public ExtendThread(String name ){
this.name=name;
}
public static void main(String[] args) {
ExtendThread et=new ExtendThread("yang");
ExtendThread et2=new ExtendThread("ll");
et.start();
et2.start();
int i=0;
while(i++<100)
{
System.out.println("线程活着没"+et.isAlive());
}
}
public void run(){
for(int i = 0;i<10 ;i++){
System.out.println("运行的线程为："+this.name);
}
System.out.println("我结束了哦");
}
}
package thread.test;
public class RunnableThread implements Runnable {
private String name;
public RunnableThread(String name) {
this.name = name;
}
@Override
public void run() {
// TODO Auto-generated method stub
for (int i = 0; i < 10; i++) {
System.out.println("运行的线程为：" + this.name);
}
System.out.println("我结束了哦");
}
public static void main(String[] args) {
RunnableThread et=new RunnableThread("yang");
RunnableThread et2=new RunnableThread("ll");
//分配新的Thread对象
Thread th=new Thread(et);
Thread th2=new Thread(et2);
th.start();
th2.start();
int i = 0;
// while (i++ < 100) {
// System.out.println("线程活着没" + th.isAlive());
//
// }
}
}
资源共享的例子：
要加上synchronized 进行锁定，否则有多余数据出现
package thread.test;
//本例子用于演示如何共享
public class RunableThread2 implements Runnable {
private Integer ticket=1000;
private String name;
public RunableThread2(String name ){
this.name=name;
}
@Override
public void run() {
// TODO Auto-generated method stub
synchronized(this){
while (ticket>0) {
System.out.println("运行的线程为：" + this.name+"票："+(ticket--));
}
}
}
/**
* @param args
* @CreateDate:2014-3-3
* @author yangll
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
RunableThread2 et=new RunableThread2("yang");
Thread th=new Thread(et);
Thread th2=new Thread(et);
th.start();
th2.start();
}
}
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