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What is the output for the below code ?

class A implements Runnable{
public void run(){
System.out.println("run-a");
}
}
1. public class Test {
2. public static void main(String... args) {
3. A a = new A();
4. Thread t = new Thread(a);
5. t.start();
6. t.start();
7. }
8. }

A.	run-a	B.	run-a run-a
C.	Compilation fails with an error at line 6	D.	Compilation succeed but Runtime Exception

Answer and Explanation

Answer:Compilation succeed but Runtime Exception

Explanation:
Once a thread has been started, it can never be started again. 2nd time t.start() throws
java.lang.IllegalThreadStateException.

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