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I will plan write project for portfolio for free use with no modifying source code of dependencies and publish it on github. Dependencies is openjdk (gplv2+cpe), spring (apache 2.0), hibernate (LGPL 2.1), postgresql (under own license postgresql lisence) and angular (mit). Can i use it together in one project and which type of final license i should use for this project?

  • I not plan to change license of spring or hibernate, i just want use it in my own project under GPLv3 with calling and dependecies (not changing of source code). I read there is no problem with it cause openjdk use GPLv2 with CPE and Hibernate use LGPL 2.1. I think rightly? – grsm Jan 5 at 8:47
  • That's problematic to distribute the resulting binary: GPL (as required by OpenJDK) is incompatible with Apache (Spring). As such no-one may distribute the compiled version. Take this with a grain of salt as I'm not into the Java environment at all and cannot properly judge how things depend on eachother and to what degree they interoperate. – planetmaker Jan 5 at 11:16
  • @planetmaker As a fellow Java-ignorant person, I will point out that the classpath exception (the "+CPE" in the question) effectively makes the GPL into the LGPL (though not exactly) for linking purposes. I don't know for sure whether that solves the issue, but it looks promising. – apsillers Jan 5 at 19:25
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OpenJDK is licensed under the GNU GPL, therefore you must use the GNU GPL.

The other libraries you listed are licensed under GNU GPL-compatible licenses, except for Spring, licensed under Apache 2.0, incompatible with the GNU GPLv2.

So you should use the GNU GPL, but do not use Spring.

  • what about the class path exception? How does that impact your answer? – planetmaker Jan 7 at 20:21
  • That comment does not equate. The license terms don't make a difference on the use case and the chosen license of a project and apply equally. And as OpenJDK is licensed under GPL with CPE... that does make a difference (see comment to original question by apsillers) – planetmaker Jan 7 at 21:38
  • OpenJDK can be used in projects licensed under the GNU GPL or a stronger license. But it cannot be used in projects licensed under a weaker license then the GNU GPL, unless it is a GNU GPL-compatible license. MIT is GPL-compatible but not Apache 2.0, so you still have to remove Spring. – JNic Jan 8 at 0:04
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    I think you mis-understand the implication of the CPE in OpenJDK's license. See opensource.stackexchange.com/questions/1410/… for a brief take on the implication – planetmaker Jan 8 at 11:35

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