Java Object Simple practical case Calculator implementation code _java

The use of methods for objects and properties in Java, simple to write a case

Import Java.util.Scanner;
 Class Calculste {int A;//define two integer int b; String option; Defines the receive operator string public void count () {//To determine the operator switch (option) {case "+": System.out.println ("Compute and:" +a+ "+" +b+ "="
   + (a+b));

   Break
   Case "-": System.out.println ("Calculated difference:" +a+ "-" +b+ "=" + (a-b));

   Break
   Case "*": System.out.println ("Calculated product:" +a+ "*" +b+ "=" + (a*b));

   Break
    Case "/": {//For division operations, the denominator can not be 0 if (b!= 0) {System.out.println ("Calculated quotient:" +a+ "/" +b+ "=" + (A/a));
    }else{System.out.println ("The second number you enter cannot be 0, please re-enter");

   }} break;
   Case "%": System.out.println ("calculated remainder:" +a+ "%" +b+ "=" + (a%b));

   Break
  DEFAULT:SYSTEM.OUT.PRINTLN ("You entered a wrong operator, please re-enter");
 Class Demo3 {//Requirement: Use Java class to describe a calculator class, Calculator has operand 1, operand 2, operator Three common attribute, also have computational function behavior.
  public static void Main (string[] args) {System.out.println ("operation of two digits");

  Scanner SCA = new Scanner (system.in);

  Creates an object for the class Calculste cal = new Calculste ();
  Assign a value to a property System.out.println ("First number:"); CAL.A = (int) sca.nextint ();
  System.out.println ("second number:");

  cal.b = (int) sca.nextint ();
  SYSTEM.OUT.PRINTLN ("Input operation symbol:"); Cal.option = Sca.next ();
 The method that accepts the character//calls the method operation Cal.count ();

 }
}

Here are some effects on the console:

"The Java language is an object-oriented programming language, a class, an object in a class, an object's properties and methods are very important," says Mo.

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