Java MethodsLesson 23Free preview

Java Scope

This lesson is part of Java · All levels

Summary

Scope determines where a variable can be accessed in a program. Variables declared in a method can only be used in that method, whereas fields declared in a class level can be used by all methods in the class. Understanding the scope helps avoid missing variable errors or name conflicts.

Key points

Local variables are declared in the method and only live in it
Field classes are declared outside the method and are accessible by many methods
The variable within the block {} only holds until the curly braces mark the closing
The local variable name covers the shadow of the field name with the same name in the method

Full lesson

Code examples and quizzes

Full lessons, code examples, and quizzes are available to subscribers. 5 questions.