a boolean is a datatype which can only return two values. True and false. Be sure that all your methods start with a lowercase letter, so It would be "test123()". Then you can do:
or (same thing)Code:if(test123() == true) { doSomething(); }
Code:if(test123()) { doSomething(); }
and
or (same thing)Code:if(test123() == false) { doSomething(); }
For more on datatypes look here: Primitive Data Types (The Java™ Tutorials > Learning the Java Language > Language Basics)Code:if(!test123()) { doSomething(); }