Enpatika

Rule for Local Variable Local variables cannot use any of the access level since their scope is only inside the method . Final is the Only Non Access Modifier that can be applied to a local variable. Local variables are not assigned a default value, hence they need to be initialized.

A block defined inside a method, block, or constructor is called local block in Java. It is also called inner block in Java. It will be executed whenever the enclosing method, constructor, or block is executed. It is not similar to the instance block.

inner class: Can only exist withing the instance of its enclosing class. Has access to all members . local class: class declared in a block. It is like an inner class (has access to all members) but it also has access to local scope.

Rules of Local Inner Class:

Local class: Use it if you need to create more than one instance of a class, access its constructor, or introduce a new, named type (because, for example, you need to invoke additional methods later). Anonymous class: Use it if you need to declare fields or additional methods.

Local classes are similar to inner classes because they cannot define or declare any static members . Local classes in static methods, such as the class PhoneNumber , which is defined in the static method validatePhoneNumber , can only refer to static members of the enclosing class.