I received a library to use in a school project, which is closed source.
However, the project itself was programmed in a different language, so I had to translate the original library. Now I want to open source the project. Can I do so without consent from the creator of the original library?
Something to note is that the library in question is trivial in its nature: the given library is just another interface, consisting of one simple class, for a graphical library (Java Swing in this case).
This question is related to Is it legal to rewrite a Java (OpenJDK) library into another programming language under GPL? but I feel that that answer is inapplicable in this case.