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Question
What will happen after compiling and running following 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. }
Options:
A .  run-a
B .  run-a run-a
C .  Compilation fails with an error at line 6
D .  Compilation succeed but Runtime Exception
E .  None of these
Answer: Option D

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