Eclipse

http://www.coolinterview.com/interview/19384/

http://www.instanceofjava.com/2015/05/10-tricky-core-java-interview-coding.html
http://www.journaldev.com/1321/java-string-interview-questions-and-answers

https://cvalcarcel.wordpress.com/2009/07/08/writing-an-eclipse-plug-in-part-1-what-im-going-to-do/