Section 6.2 Program Modules in Java
• Methods are declared within classes. Classes are typically grouped into packages so they can be imported and reused.
• Methods allow you to modularize a program by separating its tasks into self-contained units. The statements in a method are written only once and hidden from other methods.
• Using existing methods as building blocks to create new programs is a form of software reusability (p. 202) that allows you to avoid repeating code within a program.
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