javalab16.java

import java.util.*;

class myException extends Exception{
    public myException (String m){
        super (m);
    }
}

class Mycalculator{
    public void power(int n,int m){
        System.out.println("neither of p and n is negative.\n" + m + " power of " + n + "= " + Math.pow(n,m));
    }
}

public class javalab16 {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        Mycalculator ob = new Mycalculator();
        try{
            System.out.print("Enter number1:");
            int n1 = sc.nextInt();
            System.out.print("Enter number2:");
            int n2 = sc.nextInt();
            if(n1<0 || n2<0){
                throw new myException("n and p should be non-negative!!!!!!!!!!!!");
            }
            ob.power(n1, n2);
        }
        catch(myException obj){
            System.out.println(obj.toString());
        }
    }
}