The earlier Java implementations, prior to Java V1.2, only had the sandbox model, which provided a very restricted environment. With Java V1.2, a new security model has been introduced.
For more information refer to the official Java Sun site at http://java.sun.com/security/index.html, or the Java 2 Platform Security Architecture V1.0 paper from Sun.
Figure 8-5 depicts the new security model for Java V1.2.
The new model is supposed to provide the following security features for the Java Virtual Machine:
Fine-grained access control. It was available in the earlier version using ...