本文是学习网络上的文章时的总结，感谢大家无私的分享。
Thread类的对象中保存了一些属性信息可以帮助我们辨别每个线程。知道它的一些信息
ID：每一个线程的独特标示；
Name：线程的名称；
Priority：线程对象的优先级。
优先级别在1-10之间。1是最低级，10是*。
Status：线程状态。在java中，线程仅仅有6种状态：new,runnable,blocked,waiting,time
waiting 或terminated。
如今写一个程序，将线程的信息保存到文件里方便查看
package chapter;
public class Calculator2 implements Runnable{
private int number;
public Calculator2(int number){
this.number = number;
}
@Override
public void run() {
// TODO Auto-generated method stub
for (int i = 0; i < 10; i++) {
System.out.printf("%s:%d*%d = %d\n",Thread.currentThread().getName(),number,i,i*number);
}
}
}
package chapter;
import java.io.FileWriter;
import java.io.PrintWriter;
import java.lang.Thread.State; public class Main2 { /**
* <p>
* </p>
* @author zhangjunshuai
* @date 2014-8-8 下午3:36:20
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub Thread[] threads = new Thread[10];
Thread.State[] status = new Thread.State[10];
for (int i = 0; i < 10; i++) {
threads[i] = new Thread(new Calculator2(i));
if((i%2) == 0)
threads[i].setPriority(Thread.MAX_PRIORITY);
else
threads[i].setPriority(Thread.MIN_PRIORITY);
threads[i].setName("Thread"+i);
}
try{
FileWriter file = new FileWriter(".\\xianchenglog1.txt");
PrintWriter pw = new PrintWriter(file);
for(int i =0;i<10;i++){
pw.println("main: status of thread "+i+": "+threads[i].getState());
status[i] = threads[i].getState();
} for(int i =0;i<10;i++){
threads[i].start();
}
boolean finish = false;
while(!finish){
for (int i = 0; i < 10; i++) {
if(threads[i].getState()!=status[i]){
writeThreadInfo(pw,threads[i],status[i]);
}
}
finish = true;
}
pw.close();
}catch(Exception e){ } }
private static void writeThreadInfo(PrintWriter pw, Thread thread, State state) {
pw.printf("Main : Id %d - %s\n",thread.getId(),thread.getName()); pw.printf("Main : Priority: %d\n",thread.getPriority()); pw.printf("Main : Old State: %s\n",state); pw.printf("Main : New State: %s\n",thread.getState()); pw.printf("Main : ************************************\n"); } }
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