JAVA Threads
What is the output for the below code ?class A implements Runnable{ public void run(){ System.out.println(Thread.currentThread().getName()); }}1. public class Test{2. public static void main(String... args){3. A a = new A();4. Thread t = new Thread(a);5. t.setName("good");6. t.start();7. }8. }

good
Compilation fails with an error at line 5
null
None of these
Compilation succeed but Runtime Exception

ANSWER DOWNLOAD EXAMIANS APP

JAVA Threads
What notifyAll() method do?

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

ANSWER DOWNLOAD EXAMIANS APP

JAVA Threads
What will happen when you attempt to compile and run the following code?1. public class Test extends Thread{2. public static void main(String argv[]){3. Test t = new Test();4. t.run();5. t.start();6. }7. public void run(){8. System.out.println("run-test");9. }10. }

Compilation fails due to an error on line 4
run-test run-test
None of these
Compilation fails due to an error on line 7
run-test

ANSWER DOWNLOAD EXAMIANS APP

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

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

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"); }}

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

ANSWER DOWNLOAD EXAMIANS APP

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(); }}

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

ANSWER DOWNLOAD EXAMIANS APP
MORE MCQ ON JAVA Threads