Define a class to accept values into an integer array of order 4 x 4 and check whether it is a DIAGONAL array or not. An array is DIAGONAL if the sum of the left diagonal elements equals the sum of the right diagonal elements. Print the appropriate message.

Example:

3 4 2 5
2 5 2 3
5 3 2 7
1 3 7 1

Sum of the left diagonal element = 3 + 5 + 2 + 1 = 11

Sum of the right diagonal element = 5 + 2 + 3 + 1 = 11

The statement used to find the total number of Strings present in the string array String s[] is:

1. s.length
2. s.length()
3. length(s)
4. len(s)

What is the output of the Java code given below?

String color[] = {"Blue", "Red", "Violet"};
System.out.println(color[2].length());

1. 6
2. 5
3. 3
4. 2

Write a Java program to store n numbers in an one dimensional array. Pass this array to a function number(int a[]). Display only those numbers whose sum of digit is prime.