Why is 5th requirement not met??

Question about the task

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I tested a couple numbers for the multiple method that takes a string and int for arguments, and it works. But why is the 5th requirement not met?

Make the StringHelper class, which will have 2 static methods:
String multiply(String s, int count) - returns a string that has been repeated count times.
String multiply(String s) - returns a string that has been repeated 5 times.

For example:
Amigo -> AmigoAmigoAmigoAmigoAmigo

Requirements:

The program must not read data from the keyboard.
The StringHelper class's methods must return a string.
The StringHelper class's methods must be static.
The StringHelper class's methods must be public.
The multiply(String s, int count) method must return a string that has been repeated count times.
The multiply(String s) method must return a string that has been repeated 5 times.

package com.codegym.task.task06.task0611; /* StringHelper class */ public class StringHelper { public static String multiply(String s) { String result = s + s + s + s + s; return result; } public static String multiply(String s, int count) { boolean first = true; String result = null; for(int i = 0; i < count; i++) { if (first) { result = s; first = false; } result = result + s; } return result; } public static void main(String[] args) { multiply("Pineapple"); System.out.println(multiply("Pineapple", 10)); } }

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Guadalupe Gagnon

Level 37 , Tampa, United States

11 June 2020, 18:33

useful

If you entered something like this, or any number less than 0:

System.out.println(multiply("Pineapple", 0));

the result would be: null The correct result should be a blank line. You will need to fix this in the code for the task to validate.

Angel Li

Level 18 , Fremont, United States

11 June 2020, 22:39

I changed line 16 to String result = ""; but it still shows that the 5th requirement is not met.

Guadalupe Gagnon

Level 37 , Tampa, United States

12 June 2020, 13:10

What is your code now?

Angel Li

Level 18 , Fremont, United States

12 June 2020, 23:04

This is my current code after changing

String result = null;

String result = "";

This is my code:

package com.codegym.task.task06.task0611;

/*
StringHelper class

*/

public class StringHelper {
    public static String multiply(String s) {
        String result = s + s + s + s + s;
        return result;
    }

    public static String multiply(String s, int count) {
        boolean first = true;
        String result = "";
        for(int i = 1; i <= count; i++) {
            if (first) {
            result = s;
            first = false;
            }
            result = result + s;
        }
        return result;
    }

    public static void main(String[] args) {
        multiply("Pineapple");
        System.out.println(multiply("Pineapple", 0));
    }
}

Guadalupe Gagnon

Level 37 , Tampa, United States

13 June 2020, 05:58

solution

make that an if else statements. The first loop will result in 's' being added to 'result 2 times. This will end up being 1 more time than is necessary when the method ends.

Angel Li

Level 18 , Fremont, United States

13 June 2020, 18:21

I deleted the boolean first and the if else statement and it works now! Thank you!

Angel Li

Level 18 , Fremont, United States

11 June 2020, 18:24

Also I added the

System.out.println()

in line 29 because I was just testing if the results are correct.