Contests where Java code is allowed

Name
Strings and Text Processing - More Exercises
Regular Expressions (RegEx) - Exercises
Exam Preparation I - Taking a Sample Exam
Exam Preparation II - Taking a Sample Exam
Exam Preparation III - Taking a Sample Exam
Debugging Exam Problems
Exam Preparation IV - Taking a Sample Exam
Exam Preparation V - Taking a Sample Exam
Regular Expressions (RegEx) - Lab
Exam Preparation I