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Java

Need some help

I'm trying to complete the extra credit for the java basics and I've followed the process for creating the do while loop. I think I must be missing something because whenever I run the program, it doesn't prompt the user to try again after the blacklisted words are entered.

Also, is there a way I can get the contains method to ignore case?

Any help is greatly appreciated! Here is my code:

    String firstName = console.readLine("Enter your first name:  ");
    String lastName = console.readLine("Enter your last name:  ");
    String adjective = console.readLine("Enter an adjective:  ");
    String noun;
    boolean isInvalidWord;
    do { 
             noun = console.readLine("Enter a noun:  ");
             isInvalidWord = (noun.contains("Jerk, dork, nerd, geek"));                
          if (isInvalidWord) { 
             console.printf("Sorry that language isn't allowed. Try again.\n\n");
          }       
    } while(isInvalidWord);

1 Answer

Steven Parker
Steven Parker
231,271 Points

The "contains" argument must be present in entirety to match, so this example would only match if all 4 words were present in that particular order separated by commas. You'll need to match each word separately, or store them in an array and use a loop to test each one.

And you can make your comparison case-insensitive by converting the case before testing:

isInvalidWord = noun.toLowerCase().contains("jerk");
isInvalidWord |= noun.toLowerCase().contains("dork");
// etc.

Thanks! That worked :)

Can I ask what the purpose of the open close parentheses after "toLowerCase" is?

Steven Parker
Steven Parker
231,271 Points

Anytime you call a method, you place parentheses after the method name whether or not you pass any arguments within them.

Thanks a lot for your help!