dynamic and secure

                      Dynamic

While  the execution of  java program the user can get the  files dynamically from 

a local drive of  system or from a system many miles away from the user just by 

connecting with the Internet.

                        

                         Secure

Java language strictly does not use memory pointers explicitly. Java programs  run 

under an area called the sand box. Security manager determines the accessibility 

options of a class like reading and writing a file to the local  disk.   Java 

technology uses the public key encryption system to allow the java applications to

 transmit over the internet in the secure encrypted form. The bytecode Verifier is 

responsible for the check of classes after loading.