JAVA Threads
Which of the following are methods of the Thread class?1) yield()2) sleep(long msec)3) go()4) stop()

None of these
3 only
1 , 2 and 4
1 and 3

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JAVA Threads
Predict the output:class A implements Runnable{ public void run(){ try{ for(int i=0;i<4;i++){ Thread.sleep(100); System.out.println(Thread.currentThread().getName()); } }catch(InterruptedException e){ } }}public class Test{ public static void main(String argv[]) throws Exception{ A a = new A(); Thread t = new Thread(a, "A"); Thread t1 = new Thread(a, "B"); t.start(); t.join(); t1.start(); }}

A A A A B B B B
Compilation succeed but Runtime Exception
None of these
Output order is not guaranteed
A B A B A B A B

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JAVA Threads
Analyze the following code:public class Test implements Runnable{ public static void main(String[] args){ Test t = new Test(); t.start(); } public void run() { }}

The program does not compile because the start() method is not defined in the Test class.
The program compiles, but it does not run because the start() method is not defined.
The program compiles and runs fine.
The program compiles, but it does not run because the run() method is not implemented.

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JAVA Threads
What notifyAll() method do?

None of these
Wakes up all threads that are not waiting on this object's monitor
Wakes up all threads that are waiting on this object's monitor
Wakes up one threads that are waiting on this object's monitor

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JAVA Threads
What will happen when you attempt to compile and run the following code?class A implements Runnable{ public void run(){ System.out.println("run-A"); }}1. public class Test{2. public static void main(String argv[]){3. A a = new A();4. Thread t = new Thread(a);5. System.out.println(t.isAlive());6. t.start();7. System.out.println(t.isAlive());8. }9. }

None of these
false run-A false
true run-A true
false run-A true
Compilation fails due to an error on line 7

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JAVA Threads
Analyze the following code:public abstract class Test implements Runnable{ public void doSomething() { };}

The program will not compile because it does not contain abstract methods.
The program will not compile because it does not implement the run() method.
None of these
The program compiles fine.

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