In addition to its keywords, three of the words you use in a Java program are called literals. Each literal has a specific meaning in the language. You can't use a literal for anything other than its pre-assigned meaning.
The keywords and literal words are all called reserved words because each of these words is reserved for special use in the Java programming language.
The following table lists Java's literal words.
| Literal | What It Does |
false |
One of the two values that a boolean expression can possibly have. |
null |
The "nothing" value. If you intend to have an expression refer to an object of some kind, but the expression doesn't refer to any object, the expression's value is null. |
true |
One of the two values that a boolean expression can possibly have. |
