As part of the cleanup on Java-EE tags, the question of whether all things Java Standard Edition should be synonymous with the java tag. java-se, and javase, currently are; j2se,.
So, should tags java-se/javase,/j2se be synonyms of java?
There is a lot of stuff tagged java on SO; much of it is for Android, Java EE, Java ME, etc. - platforms that are intersecting sets of functionality with Java SE.