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47 lines
934 B
Java
47 lines
934 B
Java
// Test the status of the isAlive() flag before, during, and after thread
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// execution. Check that thread's threadgroup is null after thread exits.
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public class Thread_Alive implements Runnable
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{
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public static void main(String args[]) throws InterruptedException
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{
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Thread_Alive ta = new Thread_Alive();
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Thread t = new Thread(ta);
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System.out.println(t.isAlive());
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t.start();
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System.out.println(t.isAlive());
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Thread.sleep(50);
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synchronized (ta)
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{
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ta.notifyAll();
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}
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t.join();
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System.out.println(t.isAlive());
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try
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{
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t.start();
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System.out.println("Error: dead thread can be restarted.");
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}
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catch (IllegalThreadStateException x)
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{
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System.out.println ("ok");
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}
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System.out.println(t.getThreadGroup());
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}
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public synchronized void run()
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{
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try
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{
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wait();
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}
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catch (InterruptedException x) {}
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}
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}
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