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

Camel case vs. pascal case usage Most languages and development frameworks distinguish between the types of components that should be written in a given naming format. For example in Java, classes, ...

Java SE 10 (March 2018) introduced type inference for local variables. Previously, declaring a local variable required a manifest (explicit) type declaration.