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| package threadtest;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;
import java.lang.Thread.State;
public class ThreadInfo02 {
public static void main(String[] args) throws IOException {
Thread[] threads = new Thread[10];
Thread.State status[] = new Thread.State[10];
for (int i=0; i<10; i++){
threads[i]=new Thread(new Calculator02(i));
if ((i%2)==0){
threads[i].setPriority(Thread.MAX_PRIORITY);
} else {
threads[i].setPriority(Thread.MIN_PRIORITY);
}
threads[i].setName("Thread "+i);
}
PrintWriter pw = new PrintWriter(new FileWriter("/Users/zhangqingli/Desktop/log.txt"));
for (int i=0; i<10; i++){
pw.println("Main : Status of Thread "+i+" : " +threads[i].getState());
pw.flush();
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]);
status[i]=threads[i].getState();
}
}
finish=true;
for (int i=0; i<10; i++){
finish=finish && (threads[i].getState()==State.TERMINATED);
}
}
}
private static void writeThreadInfo(PrintWriter pw, Thread 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");
pw.flush();
}
}
class Calculator02 implements Runnable {
private int number;
public Calculator02(int number) {
this.number=number;
}
@Override
public void run() {
for (int i=1; i<=10; i++){
try {
Thread.sleep(3000);
} catch (InterruptedException e) {
e.printStackTrace();
}
System.out.printf("%s: %d * %d = %d\n", Thread.currentThread().getName(), number, i, i*number);
}
}
}
Thread 1: 1 * 1 = 1
Thread 0: 0 * 1 = 0
Thread 3: 3 * 1 = 3
Thread 2: 2 * 1 = 2
Thread 4: 4 * 1 = 4
Thread 6: 6 * 1 = 6
Thread 7: 7 * 1 = 7
Thread 9: 9 * 1 = 9
Thread 5: 5 * 1 = 5
Thread 8: 8 * 1 = 8
...
Thread 4: 4 * 9 = 36
Thread 9: 9 * 9 = 81
Thread 3: 3 * 9 = 27
...
log.txt
Main : Status of Thread 0 : NEW
Main : Status of Thread 1 : NEW
Main : Status of Thread 2 : NEW
Main : Status of Thread 3 : NEW
Main : Status of Thread 4 : NEW
Main : Status of Thread 5 : NEW
Main : Status of Thread 6 : NEW
Main : Status of Thread 7 : NEW
Main : Status of Thread 8 : NEW
Main : Status of Thread 9 : NEW
Main : Id 8 - Thread 0
Main : Priority: 10
Main : Old State: NEW
Main : New State: TIMED_WAITING
Main : ************************************
Main : Id 9 - Thread 1
Main : Priority: 1
Main : Old State: NEW
Main : New State: TIMED_WAITING
Main : ************************************
...
Main : ************************************
Main : Id 15 - Thread 7
Main : Priority: 1
Main : Old State: TIMED_WAITING
Main : New State: RUNNABLE
Main : ************************************
Main : Id 16 - Thread 8
Main : Priority: 10
Main : Old State: RUNNABLE
Main : New State: TIMED_WAITING
Main : ************************************
Main : Id 9 - Thread 1
Main : Priority: 1
Main : Old State: BLOCKED
Main : New State: TIMED_WAITING
Main : ************************************
...
|