Oracle JDK vs OpenJDK

Oracle JDK The build process is based on OpenJDK 7 structure , Only a few parts have been added , For example, deploy code , These include Oracle Of Java Plug ins and Java WebStart The implementation of the , And some closed source third-party components , Such as the pattern rasterizer , Some open source third-party components , Such as Rhino, And some bits and pieces , Such as additional documents or third-party fonts .

Oracle JDK Probably every 6 The main version will be released once a month , and OpenJDK The version is released about every three months . But it's not fixed , I don't think it's useful to know this .

OpenJDK Is a reference model and is fully open source , and Oracle JDK yes OpenJDK An implementation of , It's not completely open source ;

Oracle JDK Than OpenJDK A more stable .OpenJDK and Oracle JDK The code is almost the same , but Oracle JDK There are more classes and some bug fixes . therefore , If you want to develop a business / Business software , I suggest you choose Oracle JDK, Because it's thoroughly tested and stable . In some cases , Some people mentioned using OpenJDK There may be a lot of application crash problems , however , Just switch to Oracle JDK You can solve the problem ;

In response and JVM Performance aspect ,Oracle JDK And OpenJDK Compared to providing better performance ;

Oracle JDK No long-term support for upcoming releases , Users must get the latest version every time by updating to the latest version for support ;

Oracle JDK Use BCL/OTN The agreement is licensed , and OpenJDK according to GPL v2 Permission to get permission .

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