how can create or use online c/java compiler in a website?

i am computer science and Engineering student.I want to create a web application project that contain some features like as any student can get programming problem and they will solve it and submit it and the web apps inform them that his submission is correct or incorrect with the Error messages.My question is how can i add c/java compiler in my web application?there is any alternet suggetion to doing this?Thanks in advance