This week's book giveaway is in the OO, Patterns, UML and Refactoring forum. We're giving away four copies of Refactoring for Software Design Smells: Managing Technical Debt and have Girish Suryanarayana, Ganesh Samarthyam & Tushar Sharma on-line! See this thread for details.
Why haven’t you got a Student class which encapsulates name and marks? Trying to run two arrays in parallel is error-prone and not good design.
You can have as many lines as you like, but they are a lot easier to add to a List than to an array.
Keep printf(); it is more versatile than println().