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. }

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

ANSWER DOWNLOAD EXAMIANS APP

JAVA Threads
What is the output for the below code ?public class Test extends Thread{ public static void main(String argv[]){ Test t = new Test(); t.run(); } public void start(){ for(int i = 0; i < 10; i++){ System.out.println("Value of i = " + i); } }}

A run time error indicating that no run method is defined for the Thread class
A compile time error indicating that no run method is defined for the Thread class
None of these
Clean compile and at run time the values 0 to 9 are printed out
Clean compile but no output at runtime

ANSWER DOWNLOAD EXAMIANS APP

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"); }}

None of these
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.
The program compiles and runs fine and displays test on the console.

ANSWER DOWNLOAD EXAMIANS APP

JAVA Threads
What notifyAll() method do?

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

ANSWER DOWNLOAD EXAMIANS APP
MORE MCQ ON JAVA Threads