Below Program is a Demonstrate usage of Class, Objects, variables and Methods. Calculator Class Source File:
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package com.mypacakage.demo; class CalculatorClass { int val1; int val2; int result; String operation; //Call Below Function after Object creation with arguments //These function will set Result instance variable and display the result //Addition Function public void addition(int arg1, int arg2){ result = arg1+arg2; } //Subtraction Function public void subtraction(int arg1, int arg2){ result = arg1-arg2; } //Multiplication Function public void multiplication(int arg1, int arg2){ result = arg1*arg2; } //Division Function public void division(int arg1, int arg2){ result = arg1/arg2; } //Call any Operation //Function to Demonstrate that while Object is created from other Class Function, //we can set the Class instance variable val1 and val2 and just call the this function public void call_any_ops(char ops){ switch(ops){ case 'A': addition(val1,val2); break; case 'S' : subtraction(val1,val2); break; case 'D' : multiplication(val1,val2); break; case 'M' : division(val1,val2); break; } //Call Show Result Method showresult(); } public void showresult(){ System.out.println("Result of the Operation: " + result); } } |
CalculatorTest Class Source…