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Thread: Scanner and if

  1. #1
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    Default Scanner and if

    Hi All,
    i build a superclass called Shoes, and some subclasses. One of them is "askerayakkabi" .
    what i want to make is, i use scanner system.in and making user to enter askerayakkabi if they enter after they have to enter size and color. if they choose the askerayakkabi. but the problem is first scanner method for ' String ayakkabituru = cesit.nextLine();' is working. and i can enter the askerayakkabi... after wrote to askerayakkabi in the consule , i would like to if is working and request more data like size of shoes.. color of shoes.. but i didnt get it why that if is not working..thank you in advance
    package denemeleredo;
     
    import java.util.Scanner;
     
    public class Ayakkabisecimi {
     
    	public static void main(String[] args) {
    		// TODO Auto-generated method stub
     
    		Scanner cesit = new Scanner(System.in);
    		System.out.println("Lutfen istediginiz ayakkabiyi giriniz. askerayakkabi,Babet,Iskarpin");
    		String ayakkabituru = cesit.nextLine();
    		System.out.println(ayakkabituru);
     
    		if (ayakkabituru == "askerayakkabi") {
    		    askerayakkabi secilen = new askerayakkabi();
    		    System.out.println("Lutfen istediginiz rengi yaziniz.");
    		    String taleprenk = cesit.nextLine();
    			System.out.println("Lutfen talep edilen olcuyu giriniz");
    			int talepolcu = cesit.nextInt();
    			System.out.println("Talep ettiginiz ayakkabi " + ayakkabituru + " istediginiz renk "+ taleprenk + " ve olcusu " + talepolcu);
    		}
     
     
     
     
    	}
     
    }
    Last edited by erenbayir; January 21st, 2023 at 07:07 AM.

  2. #2
    Super Moderator Norm's Avatar
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    Default Re: Scanner and if

    One problem I see is using == to compare String objects. You need to use the equals method to compare String objects.

    Please edit your post and wrap your code with code tags:

    [code]
    **YOUR CODE GOES HERE**
    [/code]

    to get highlighting and preserve formatting.
    If you don't understand my answer, don't ignore it, ask a question.

  3. The Following User Says Thank You to Norm For This Useful Post:

    erenbayir (January 21st, 2023)

  4. #3
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    Default Re: Scanner and if

    The error is in the line

    if (ayakkabituru == "askerayakkabi") {

    This line uses the == operator to compare two strings. The == operator compares the references to the objects, not the content of the objects. To compare the content of two strings, you should use the .equals() method.

    So, the corrected code would be:

    if (ayakkabituru.equals("askerayakkabi")) {

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