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

An exception is thrown at runtime.
"go" is printed
"gogogo" is printed
"gogo" is printed
Compilation fails.

ANSWER DOWNLOAD EXAMIANS APP

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
None of these
run-a run-a
Compilation succeed but Runtime Exception
run-a

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

ANSWER DOWNLOAD EXAMIANS APP

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. }

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

ANSWER DOWNLOAD EXAMIANS APP

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

The program compiles fine.
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.
None of these

ANSWER DOWNLOAD EXAMIANS APP
MORE MCQ ON JAVA Threads