The JDK also contains a Java Runtime Environment (JRE) that is able to run compiled Java code. Other tools include an archiver (jar) and a documentation generator (javadoc). One of these development tools is a compiler (javac) that converts Java source code (. It contains tools that allow you to develop and run your Java program. When you want to create a Java application you need a Java Development Kit (JDK). Check following guides if you are looking to download and install JDK 1.5, JDK 1.6, JDK 1.7, JDK 1.9 or JDK 1.10.
