Example
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Emoticons
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#1 streek405 ?
Reputation: 0
- Posts: 17
- Joined: 10-March 13
Posted Today, 12:15 PM
// NOTE: for some reason I am getting the 'cannot find symbol error' // for line 17...also, am I doing the if else correctly for boolean types? // This program will ask the user his/her gender and age // and will print out results using a nested if else import java.util.Scanner; class NestedIfElse2 { // not finished yet...for nest public static void main(String[] args){ //create variables boolean boy = true; boolean girl = false; // if the user enters girl, then it will be false, cuz girls dont play Pokemon LOL! System.out.println("Hello, my name is Professor Oak. Are you a boy or girl: ?"); String gender = input.next(); System.out.println("Right! Now, how old are you: ?"); int age = input.nextInt(); int old = 100; int adult = 20; int baby = 10; //create nest if(gender.equals(true)){ System.out.println("So you're telling me that you are a boy? Got it!"); } else if(gender.equals(false)){ System.out.println("Girls play video games...?"); } else{ // if they do not input boy or girl System.out.println("You must be a pokemon!"); } } }
Is This A Good Question/Topic? 0
Replies To: Boolean types in If Else Statements
#2 jon.kiparsky ?
Reputation: 5421
- Posts: 8,717
- Joined: 19-March 11
Re: Boolean types in If Else Statements
Posted Today, 12:20 PM
String gender = input.next();
What's an input? You don't seem to have declared this.
#3 streek405 ?
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- Posts: 17
- Joined: 10-March 13
Re: Boolean types in If Else Statements
Posted Today, 07:08 PM
String gender = input.next();
What's an input? You don't seem to have declared this.
Thank you, you're right! But, now when I run it (if I enter boy or girl for the the gender) it prints out the ELSE statement...why is this? I have never used the boolean true/false statements before and I want to know how to do it 
#4 PudgeCo ?
Reputation: -2
- Posts: 8
- Joined: 04-March 11
Re: Boolean types in If Else Statements
Posted Today, 07:28 PM
The problem lies in this line:if(gender.equals(true))
You're trying to use a method that compares String values.
What you will want to do is change the lines like that to one of the following:
Option 1:
if(gender == true)
This will check if your boolean value in gender is true.
Or, Option 2:
if(gender)
This does the same thing as option one, and evaluates whether or not the value is true as well.
Was This Post Helpful? -1
#5 pbl ?
Reputation: 8021
- Posts: 31,132
- Joined: 06-March 08
Re: Boolean types in If Else Statements
Posted Today, 07:38 PM
Option 1:
if(gender == true)
This will check if your boolean value in gender is true.
Or, Option 2:
if(gender)
This does the same thing as option one, and evaluates whether or not the value is true as well.
Completly false.
gender is a String it can'be be == true of if(gender)
maybe if(gender.equals("true"))
#6 jon.kiparsky ?
Reputation: 5421
- Posts: 8,717
- Joined: 19-March 11
Re: Boolean types in If Else Statements
Posted Today, 10:07 PM
gender is a String it can'be be == true of if(gender)
And therefore .equals returns false when you compare a String to a boolean, so it fails.
You might do something like
if (gender.equals("boy") { // ... }
but there will be some complications. Play with it.
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Source: http://www.dreamincode.net/forums/topic/321458-boolean-types-in-if-else-statements/
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