Java 11 and 12 – New Features

Local variables

The usage of var is limited to local variables. These variables are used to store intermediate values and have the shortest life span, as compared to the instance and static variables. The local variables are defined within a method, constructor, or initializer block (both instance and static). Within a method or initializer, they can be defined within constructs, such as if..else loops, switch statements, and the try-with-resources construct.

The following is an example of  Person class, showing possible usage of var to define local variables in initializer blocks, methods (including constructors), loops, as a local variable within switch branches, or a try with resources statement:

public class Person { { var name = "Aqua ...