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Thread: Boolean or If?

  1. #1
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    Default Boolean or If?

    After a few tutorials I've finally started playing around with the GUI and I'm playing with taking user input and putting them into an equation. Right now my problem is trying give a Yes/No answer a value. At first I tried to make it a boolean but got utterly confused. So I turned it into a string and made an if statement that changes the value of a variable. The issue I am having right now is that whether or not I put yes or no for "Are you furthernig your education?" I will get the same output value.

    package sandbox;
     
    import javax.swing.JOptionPane;
     
    class Play {
    	public static void main(String[] args){
    		String money =JOptionPane.showInputDialog("How often do you get paid in a week?");
    		String edu =JOptionPane.showInputDialog("Are you furthering your education?");
    		String pt =JOptionPane.showInputDialog("How often do you workout in a week?");
     
    		int school;
     
    		if (edu == "Yes"){
    			school = 5;
    		} else {school = 0;}
     
    		int paid = Integer.parseInt(money);
    		int excercise = Integer.parseInt(pt);
    		int score = paid+excercise*3*school/2;
     
    		JOptionPane.showMessageDialog(null, "Your value is " + score, "Pass!", JOptionPane.PLAIN_MESSAGE);
    	}
    }


  2. #2
    Super Moderator helloworld922's Avatar
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    Default Re: Boolean or If?

    See: Common Java Mistakes: == operator or equals() method

    After reading that, take a closer look at this line of code:

    if (edu == "Yes")

  3. The Following User Says Thank You to helloworld922 For This Useful Post:

    0ffConstantly (October 26th, 2012)

  4. #3
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    Default Re: Boolean or If?

    Ahhh okay. That was simple. If any other beginners out there are thinking about trying codeacademy.com just don't. They have me confused and using ridiculously wrong syntax.
    Here's the code I ended up with.
    package sandbox;
     
    import javax.swing.JOptionPane;
     
    class Play {
    	public static void main(String[] args){
    		String money =JOptionPane.showInputDialog("How often do you get paid in a week?");
    		String edu =JOptionPane.showInputDialog("Are you furthering your education?");
    		String pt =JOptionPane.showInputDialog("How often do you workout in a week?");
     
    		int school;
    		String eduAnswer = "Yes";
     
    		if (edu.equals(eduAnswer)){
    			school = 5;
    		} else {school = 0;}
     
    		int paid = Integer.parseInt(money);
    		int excercise = Integer.parseInt(pt);
    		int score = paid+excercise*3*school/2;
     
    		JOptionPane.showMessageDialog(null, "Your value is " + score, "Pass!", JOptionPane.PLAIN_MESSAGE);
    	}
    }

    Thanks!

  5. #4
    Super Moderator jps's Avatar
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    Default Re: Boolean or If?

    Just so it was mentioned also... .equalsIgnoreCase

    ...and if your question has been answered please mark the thread as solved. Assistance here if needed.

  6. The Following User Says Thank You to jps For This Useful Post:

    0ffConstantly (October 26th, 2012)

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