Java applications evaluate expressions. Evaluating an expression produces a new value that can be stored in a variable, used to make a decision, and more. A simple expression is a literal ...

Listing 4 uses ToDo to annotate an unfinished class method. Java provides a special String value() element that can be used to return a comma-separated list of metadata items. Listing 5 ...

Java collection classes allow a developer to keep track of contained items in one of two ways, either by an indexed count or a key. This creates an obvious limitation where multiple values can’t be ...