Types of variable in Java A variable that contains a whole number, as in the previous examples, is called an “integer” or “int” for short. However, this is just one type of variable in Java.

Java SE 10 (March 2018) introduced type inference for local variables. Java Language Architect Brian Goetz explains the feature.

Java SE 10 introduced var as the type of a local variable declaration and a lambda formal parameter. The compiler treats var as an identifier with special meaning, but it isn’t considered to be ...

Remember that in Java, for a reference variable of some type referring an object of its supertype is forbidden: arrows in Figure 8 must not be directed upwards.

Java’s var keyword Packaged as part of the 2018 version 10 release, the Java var reserved word introduced type inference to the strongly typed Java programming language. Type inference in Java happens ...