Array Questions

1.What is output of following program

public class ArrayDemo { public static void main(String[] args) { int [][] arr=new int [2][]; System.out.println(arr[0][0]); } }

2.What is output of following program

public class ArrayDemo { public static void main(String[] args) { int [] a=null; System.out.println(a[0]); } }

3.What is output of following program

public class ArrayDemo { public static void main(String[] args) { int [] a={}; System.out.println(a[0]); } }

4.What is output of following program

public class ArrayDemo { public static void main(String[] args) { int [] a={1,2,3}; System.out.println(a[0]); } }

5.What is output of following program

public class ArrayDemo { public static void main(String[] args) { int [][] arr=new int [][2]; System.out.println(arr[0][0]); } }

6.What is output of following program

public class Arr { public static void main(String[] args) { Object[] sArr = new String[3]; sArr[2] = 10; } }

7.What is output of following program

public class Arr { public static void main(String[] args) { Number [] sArr = new int[3]; sArr[0] = 10; } }

8.What is output of following program

public class Arr { public static void main(String[] args) { Number [] sArr = new Float[3]; sArr[0] = 10; } }