I need a java program to find how many times do the duplicate elements occur in a java arraylist (collections class)
This is my current code and I want to continue this to count the number of times when the duplicate elements occur in the array list
import java.util.*;
public class NumberCount{
public static void main(String args[])
{
System.out.println("Enter how many elements have to be entered");
Scanner x= new Scanner(System.in);
int n=x.nextInt();
ArrayList<Integer> a= new ArrayList<Integer>();
for(int i=0;i<n;i++)
{
System.out.println("Enter your element");
Scanner y= new Scanner(System.in);
int k=y.nextInt();
a.add(k);
}
System.out.println("Elements: "+a);
}
}
}
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