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. }

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

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JAVA Threads
Given the code. What will be the result?public class Test implements Runnable{ public static void main(String[] args) throws InterruptedException{ Thread a = new Thread(new Test()); a.start(); System.out.print("Begin"); a.join(); System.out.print("End"); } public void run(){ System.out.print("Run"); }}

Compilation fails.
An exception is thrown at runtime.
"BeginRunEnd" is printed.
"BeginEnd" is printed.
"BeginEndRun" is printed.

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

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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. }

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

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JAVA Threads
What notifyAll() method do?

Wakes up one threads that are waiting on this object's monitor
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
None of these

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JAVA Threads
What will be the output of the following program code?public class Test implements Runnable{ public static void main(String[] args){ Thread t = new Thread(this); t.start(); } public void run(){ System.out.println("test"); }}

The program compiles fine, but it does not print anything because t does not invoke the run() method
The program does not compile because this cannot be referenced in a static method.
None of these
The program compiles and runs fine and displays test on the console.

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