Doing C# long enough, you get yourself familiar with C# concepts and syntax. That's fine, but sometime when you need "the same" concepts in Java, it's quite difficult. This cheat sheet here to tackle that problem.
Java for Beginner – 2 – Hello World in Java
After getting yourself familiar with names and terms in Java in part 1, now it's time for you to create your first program in Java.
Java for Beginner – 1 – Introduction to Java from a .NET guy
Coming to Java world, from a .NET guy, is like going from a full feature-rich and comfortable car to a basic bike with a lot of space for extension and customization.
Tuan Tran's Blog 