What is really in the JDK ?

For a while I’ve started counting the number of external JAR’s i’m using in a given project. I usually try to make sure that every one of them is “needed”. Now as a rough statistic, the last 3 projects I worked on had

  1. 34 Mb dependencies (cocoon project – lot of XML stuff :-)
  2. 30 Mb dependencies (using web services .. )
  3. 6 Mb (basic web based project)

Now, considering that a JDK weighs 33Mb (rt.jar) my question is : what is really in the JDK ?
P.

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