Can you please tell me why it is not working?

[normal knoll]

Can you please tell me why it is not working?It says: "yes" cannot be resolved to a variable

[silk prism]

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[normal knoll]

package ilkprojem;
import javax.swing.JOptionPane;
public class Main {

public static void main(String[] args) {
    

    
    
    JOptionPane.showMessageDialog(null,"Please respond with either yes or no");
    
    String fur = JOptionPane.showInputDialog("Does it have fur?");
    

    if (fur == yes) {
        System.out.println("it is a mammal");
    }
    else {
        System.out.println("it is not a mammal");
    }
    
    
    
    
}

here is my code

[silk nest]

variable yes?

[normal knoll]

yes

[green thunder]

change yes to "yes"

[silk nest]

if (fur.equals(yes)) {
    System.out.println("it is a mammal");
}```

[green thunder]

why so complicated

[green thunder]

also use .equals not == for string comparison

[silk prism]

Looks like you're having some trouble comparing strings, check out this stackoverflow question for help.

[silk nest]

or

    System.out.println("it is a mammal");
}```

[normal knoll]

Thank you

I'm really new

[green thunder]

Everyone starts at one point i guess

[sage pike]

it's better to use "yes".equals(fur), if you don't want to have nullpointerexception

[normal knoll]

I did a terrible mistake of not putting double quotes

Thx