Frameworks are large bodies of prewritten code to which you add your own code to solve a problem in a specific domain. You make use of a framework by calling its methods, inheritance, and supplying "callbacks", listeners, or other implementations of the Observer pattern. Constrast to library.
In this course you will learn Java Frameworks like Spring, Struts and Hibernate.
There are many more frameworks but these three are very important. Get this course and pioneer yourself in the technology.
According to current scenario in the market, every company is working on frameworks, so you need to upgrade yourself to keep up with the market. Here, you can upgrade yourself without going anywhere, you can learn all these frameworks online.