Java Set 2

Select the valid statement to declare and initialize an array.

• int[] A = {}

• int[] A = (1,2,3)

• int[] A = {1, 2, 3}

• int[][] A = {1,2,3}

Find the value of A[1] after execution of the following program.

int[] a = {0,2,4,1,3};

for(int i = 0; i < a.length; i++)

a[i] = a[(a[i] + 3) % a.length];

• 0

• 1

• 2

• 3

Unlike C-Arrays, the Java-Arrays have ___.

• Names

• Values

• Methods and Fields

• None

A failed method overriding calls the method of a ___ in Java.

• Superclass

• Subclass

• Superclass or Subclass

• None

class X implements Runnable {

public static void main(String args[]) {

/* Missing code? */

}

public void run() {

}

}

Which of the following line of code is suitable to start a thread ?

• a)Thread t = new Thread(X);

• b)Thread t = new Thread(X); t.start();

• c)X run = new X(); Thread t = new Thread(run); t.start();

• d)Thread t = new Thread(); x.run();

Int i;

for(i = 1; i < 6; i++){

if(i > 3) continue;

}

System.out.println(i);

• 3

• 4

• 5

• 6

A Java Class inherits Constants and Methods of an Interface using ____ keyword.

• INTERFACE

• IMPLEMENTS

• EXTENDS

• All the above

Choose correct option

• C

• No output

• None of the above

• Compiler error

Which is the superclass of Error class in Java?

• Throwable

• Exception

• RuntimeException

• None of the above

which one create an anonymous inner class from within class Bar?

• Boo f = new Boo(24) { };

• Boo f = new Bar() { };

• Bar f = new Boo(String s) { };

• Boo f = new Boo.Bar(String s) { };