JAVA Threads
In java a thread can be created by ..........

Implementing Runnable interface.
Extending the thread class.
None of these
Both of the above

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

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

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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. }

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

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