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

ANSWER DOWNLOAD EXAMIANS APP

JAVA Threads
Analyze the following code:public class Test implements Runnable{ public static void main(String[] args){ Test t = new Test(); t.start(); } public void run() { }}

The program does not compile because the start() method is not defined in the Test class.
The program compiles and runs fine.
The program compiles, but it does not run because the start() method is not defined.
The program compiles, but it does not run because the run() method is not implemented.

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); } }}

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

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

ANSWER DOWNLOAD EXAMIANS APP

JAVA Threads
What will be the output after compiling and executing the following code?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"); }}

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

ANSWER DOWNLOAD EXAMIANS APP
MORE MCQ ON JAVA Threads