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57 lines
1.6 KiB
Java
57 lines
1.6 KiB
Java
/*
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Deadlock describes a situation where two or more threads are blocked forever,
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waiting for each other. Deadlocks can occur in Java when the synchronized
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keyword causes the executing thread to block while waiting to get the lock,
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associated with the specified object. Since the thread might already hold
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locks associated with other objects, two threads could each be waiting for
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the other to release a lock.
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In such case, they will end up waiting forever.
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*/
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public class MyDeadlock
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{
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String str1 = "Java";
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String str2 = "UNIX";
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Thread trd1 = new Thread("My Thread 1")
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{
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public void run()
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{
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while(true)
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{
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synchronized(str1)
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{
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synchronized(str2)
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{
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System.out.println(str1 + str2);
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}
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}
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}
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}
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};
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Thread trd2 = new Thread("My Thread 2")
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{
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public void run()
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{
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while(true)
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{
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synchronized(str2)
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{
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synchronized(str1)
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{
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System.out.println(str2 + str1);
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}
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}
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}
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}
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};
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public static void main(String a[])
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{
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MyDeadlock mdl = new MyDeadlock();
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mdl.trd1.start();
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mdl.trd2.start();
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}
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} |