Almost all open source Java software is designed to run with Java SE. There are two different Java SE packages that can be installed: the Java Runtime Environment (JRE) and the Java Development Kit ...

Javaw.exe is an executable component integrated within the Oracle Java Runtime Environment (JRE). It is essential to run certain Java-based programs including JAR files without using a console window.

The Java Runtime Environment (JRE) is a software package developed by Oracle Corporation. It's designed to provide a runtime environment for applications written in Java programming language.