Freemarker Template Language

1. Identifying whether an element is empty
2. Iterating over map using entryset

Web-Services

1. Testing web services using cURL

Spring sample implementations

1. RowMapper Example
2. BeanPropertyRowMapper Example

JVM, Memory management and Garbage Collection Concepts

1. How garbage collection works
2. Why full gc need stop the world
3. Garbage collection visualization (In visual vm)