Closed Refactoring series 2 - "dynamic" math

[codyscott]

'mga 'tol,

Again, some kind of refactoring.
To be learned:
- paggawa ng methods/functions
- paggamit ng while loop
- paggamit ng Scanner (for user input)
- preview ng Exception for errors


/******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);
    }
}

 

[Name is not available]

Nice topic, saktong sakto sa pinag aaralan namin kaso nag array na kanina hahaha

 

[--psy]

Nice one sir!