![]() ![]() To start, the JRE is a Sun/Oracle-only creation and not a real part of OpenJDK. And correspondingly, neither OpenJDK nor Oracle JDK 11 provide a JRE option for download either. In fact, with the release of JDK 11, they are officially gone. To give one such example, as of this article's publish date, the JRE for the most recent Oracle Java 8 update (Java SE 8 update 191) consumes 196 MB on a Windows 64 system, whereas the JDK version takes a whopping 366 MB disk space.Īs has been announced some time ago, the Java Plugin's and Java Web Start's days are numbered. The JDK, on the other hand, encompasses everything in the JRE plus all of the framework and utilities required by Java developers. It contains all of the necessary components required to execute Java programs including the Java Virtual Machine, the Java Class Libraries, and the (now) legacy client deployments technologies like the Java Plugin and Java Web Start. The predominant choice for desktop users is the JRE. Speaking from years of customer interactions, there is still a good deal of confusion surrounding these two terms. ![]() ![]() Download and install the Java Development Kit or JDK.Download and install the Java Runtime Environment or JRE.Historically, when opting to install Oracle's (and previously Sun's) implementation of the Java platform, users have been presented with two options: ![]()
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