Write a java program for overloaded function calculate() with following function definitions.
void calculate(int x, int y ) – to calculate the sum of all even numbers from x till y and print the sum . 

void calculate(char a,char n) – to print all vowels from variable a to n if any void calculate(int x, int y, int z) – to print the middle number from x,y,z if you arrange them in ascending order.