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. }

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

ANSWER DOWNLOAD EXAMIANS APP

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

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(); }}

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

ANSWER DOWNLOAD EXAMIANS APP

JAVA Threads
What notifyAll() method do?

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

ANSWER DOWNLOAD EXAMIANS APP

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

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

ANSWER DOWNLOAD EXAMIANS APP
MORE MCQ ON JAVA Threads