Design a class to overload a function num_calc() as follows

 void num_calc(int num,char ch ) with one integer argument and one character argument,
computes the cube of integer argument if choice ch is ‘c’/ ‘C’ otherwise finds its square.
 void num_calc(int a,int b,char ch) with two integer arguments and one character
argument.It computes the product of integer arguments if ch is’p’ else adds the integers
 void num_calc(String s1,String s2) with two string arguments,which prints whether the strings
are equal or not

import java.util.*;

class Assign9
{
  void num_calc( int num, char ch )
  {
    int s = 0;
    if(ch == 'c' )
      s = num * num * num;
    else
      s = num * num;
    System.out.println(" s = " + s );
  }
  void num_calc( int a, int b, char ch )
  {
    int s = 0;
    if(ch == 'p' )
      s = a * b;
    else
      s = a + b;
    System.out.println(" s = " + s );
  }
  void num_calc( String s1, String s2 )
  {
    if(s1.equals(s2))
      System.out.println("Both Strings are equal.");
    else
      System.out.println("Both Strings are not equal.");
  }
  public static void main(String args[ ])
  {
    Scanner sc = new Scanner(System.in);
    Assign9 ob = new Assign9( );
    ob.num_calc( 5, 'c' );
    ob.num_calc( 8, 3, 'n' );
    ob.num_calc( "String1", "String2" );
  }
}

Output:

s = 125
s = 11
Both Strings are not equal.