/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
 
/* Name of the class has to be "Main" only if the class is public. */
class MathFunctions {
 
public static void addToInt(Integer x, Integer amountToAdd) {
	 x = x + amountToAdd;
	 System.out.println("xx :"+x);
}
public static void main(String[] args) {
 Integer a = 15;
 Integer b = 10;
 MathFunctions.addToInt(a, b);
 System.out.println(a); }
 
 }

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