Question about JAVA Threads

Question

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();      }}

Accepted Answer

A A A A B B B B

Answer

Output order is not guaranteed

Answer

None of these

Answer

A B A B A B A B

Answer

Compilation succeed but Runtime Exception

JAVA Threads
Which keyword when applied on a method indicates that only one thread should execute the method at a time.

JAVA Threads
What notifyAll() method do?

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() { }}

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. }

JAVA Threads

JAVA Threads Which keyword when applied on a method indicates that only one thread should execute the method at a time.

JAVA Threads What notifyAll() method do?

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() { }}

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. }

JAVA Threads
Which keyword when applied on a method indicates that only one thread should execute the method at a time.

JAVA Threads
What notifyAll() method do?

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() { }}

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. }