Welcome to the Java Programming Forums


The professional, friendly Java community. 21,500 members and growing!


The Java Programming Forums are a community of Java programmers from all around the World. Our members have a wide range of skills and they all have one thing in common: A passion to learn and code Java. We invite beginner Java programmers right through to Java professionals to post here and share your knowledge. Become a part of the community, help others, expand your knowledge of Java and enjoy talking with like minded people. Registration is quick and best of all free. We look forward to meeting you.


>> REGISTER NOW TO START POSTING


Members have full access to the forums. Advertisements are removed for registered users.

Results 1 to 2 of 2

Thread: How to invert?

  1. #1
    Junior Member
    Join Date
    Nov 2009
    Posts
    1
    Thanks
    0
    Thanked 0 Times in 0 Posts

    Default How to invert?

    Hello all,
    My names Andrew! I am struggling with a Java problem!

    How do you invert true/false values?
    ie if a = true make a = false?

    Thanks!


  2. #2
    Administrator copeg's Avatar
    Join Date
    Oct 2009
    Location
    US
    Posts
    5,337
    Thanks
    182
    Thanked 830 Times in 773 Posts
    Blog Entries
    5

    Default Re: How to invert?

    The '!' operator will shift booleans to their opposite value. for example
    if ( !false ) {
         //this will evaluate
    }
    if ( false ){
         //this will not evaluate
    }
    boolean a = true;
    if ( a ){
         //this will evaluate
    }
    a = !a;
    if ( a ){
        //this will not evaluate
    }

Similar Threads

  1. How to invert a word String
    By Truffy in forum Java Programming Tutorials
    Replies: 16
    Last Post: October 3rd, 2009, 02:44 AM