What do you mean by Spring is light weight?

Few points to confirm Spring is Light Weight :

1. Like Swings are light weight , AWT are heavy weight. Same reason.

2. AWT will use OS libraries while swing  has no dependency on OS. It will use JDK libraries only.

3. Swings are not having any dependency on OS.It will directly use JDK libraries.

4. EJB’s are having dependency of Application Servers.

5. Spring don’t need application server.Spring jars are enough along with your JDK.