Why You Should Care About The Differences Between OpenJDK AndOracleJDK ? There are several reasons why you might care about the differences between open source and proprietary software. First, there are some security concerns with open source software. Second, you need to understand how the licensing works so you can make sure you're not violating any terms. Third, you need to understand what features each version offers so you can choose the one that meets your needs. Finally, you need to understand the differences between the two versions because they offer different levels of support.
There are several reasons why one might choose to use either the OpenJDK or Oracle JDK. One reason is because of licensing. Both versions of the JDK are free to download and use, but there are some restrictions with the OpenJDK. For instance, the OpenJDK cannot be used in certain countries where Oracle has exclusive rights to the Java trademark. Another reason to consider using the Oracle JDK is because of its support. The Oracle JDK comes with extensive documentation and training materials. It also includes updates and bug fixes as soon as possible after they become available.
In addition to the above benefits, the Oracle JDK offers additional features such as JMX monitoring, remote debugging, and application server integration. These features make it easier to develop applications that run on multiple platforms.
OpenJDK is the short form of Open Java Development Kit similar to Oracle's Java Development Kit used to develop Java Applications. Main difference between Oracle JDK and OpenJDK is that OpenJDK is free for all while Oracle Java Development Kit or Oracle JDK requires commercial license.
OpenJDK is the open source implementation of the Java Platform Standard Edition and is free to use with General Public License Version 2 ; GPLv2. OpenJDK 7 is the reference implementation of the Java SE 7 Specification. For more details you can refer the official Java SE 7 specification from Java Community Process here.
OpenJDK 7 was released on 28th July 2011,Since decision to Open Source JDK came late in the life cycle of the development of JDK 6, JDK 7 was first released as open source. Since Java SE 6 was needed as well, to maintain backword compatibility OpenJDK 6 was released by removing the OpenJDK 7 features inappropriate for a Java SE 6 specification.
Community OpenJDK source code can be downloaded from Mercurial repository
Oracle Java is not free anymore!. We need to buy subscription for its usage. Typically for Java SE Desktop Subscription you might have to pay minimum 2.5$ per named user profile per month. And minimum of 25$ per processor (volume 1-99).
For detailed price list please visit oracle here
On the other hand, OpenJDK is free for all and you don't have to pay single penny!. If you don't want you buy Oracle Subscription and still want to use Java for free in all your Production Systems then OpenJDK is the right choice for you.