🔒 Closed Beginners: code refactoring example

[codyscott]

Mga 'tol,

Basic and simple demo ng code refactoring.
If you want to learn more, join our group: "SeriouslyJava"

/******UNREFACTORED ********/

/**
 *
 * Refactoring Series
 * Author: CodyScott for PHcorner
 *
 */
public class Math1 {

   public static void main(String[] args) {
       //add 5 integers
       int num1 = 10;
       int num2 = 5;
       int num3 = 100;
       int num4 = 20;
       int num5 = 5;
   
       int total = num1+num2+num3+num4+num5;
   
       System.out.println("The total is: " + total);
   }
}

/******REFACTORED using method/function for reusability********/

/**
 *
 * Refactoring Series
 * using method/function
 * Author: CodyScott for PHcorner
 */
public class Math2 {

   public static void main(String[] args) {
       //add 5 integers
       int num1 = 10;
       int num2 = 5;
       int num3 = 100;
       int num4 = 20;
       int num5 = 5;
     
       int total = addFiveIntegers(num1,num2,num3,num4,num5);
       int total2 = addFiveIntegers(10,20,30,5,5);
       int total3 = addFiveIntegers(100,(6+6),(10/2),5,(5*5));
     
       System.out.println("The total is: " + total);
       System.out.println("The total2 is: " + total2);
       System.out.println("The total3 is: " + total3);
 
   }
   
   //gawa ng method / function
   //para reusable
   public static int addFiveIntegers(int num1, int num2, int num3, int num4, int num5) {
       int total = 0;
       total = num1+num2+num3+num4+num5;
       return total;
   }

}

/******REFACTORED. Medyo dynamic siya. ********/

/**
 *
 * Refactoring Series
 * user input and while loop
 * para mas dynamic siya
 * Author: CodyScott for PHcorner
 *
 */
import java.util.Scanner;

public class Math3 {

   public static void main(String[] args) {
       Scanner read = new Scanner(System.in);
       boolean loopAgain = true;
       int total = 0;
   
       System.out.println("Start adding. Type 0 to Exit.");
   
           //start of loop or while loopAgain is true
           while(loopAgain) {
               try {
                   int inputNumber = read.nextInt();
                   total += inputNumber;
               
                   if(inputNumber == 0) {
                       loopAgain = false;    //pag 0 na yung in-input, exit na ang app.
                   }
               
               } catch(Exception e) {
                   System.out.println("Invalid entry. Try again!");
                       read.next();
               }
           }
           //end of loop or while loopAgain is false

           //display total at the end
           System.out.println("-------\nTOTAL: " + total);
   }
}

 

[eirele01]

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[codyscott]

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