Java source structure - Java program structure, Import Statement, Types of import statement, packages

Project Valhalla provides a venue to explore and incubate advanced Java and language feature candidates such as - Inline Types, Generic Specialization, Enhanced volatile and more and Project Leyden’s major role will be to address the long-term pain points of java like slow startup time , slow time to pick performance and large footprint.

Although we have stated the goal to have OpenJDK and Oracle JDK binaries be as close to each other as possible there remains, at least for JDK 11, several differences between the two options.