JAVA Threads
Which of the following constructor of class Thread is valid one?

Thread(String threadName, int priority)
Thread(int priority)
Thread(Runnable threadOb, String threadName)
None of these
Thread(Runnable threadOb, int priority)

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JAVA Threads
What will be the output?class A extends Thread{ public void run(){ for(int i=0; i<2; i++){ System.out.println(i); } }}public class Test{ public static void main(String argv[]){ Test t = new Test(); t.check(new A(){}); } public void check(A a){ a.start(); }}

0 0
Compilation error, class A has no start method
0 1
Compilation succeed but runtime exception
None of these

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JAVA Threads
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. }

None of these
Compilation succeed but Runtime Exception
run-a run-a
Compilation fails with an error at line 6
run-a

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