Write a java program.

Given an array of integers, 1 a[i] n (n = size of array), some elements appear twice and others appear once.

Find all the elements that appear twice in this array.

Example:

Input:

[4,3,2,7,8,2,3,1]

Output:

2,3

Please implement two methods of a class:

• First method is used to print all the elements that appear twice in the array, array is the parameter of the method
• Main() method: ask user to type a sequence of integers as the values of an array, then call the first method.
• This is write in java.