3. Java and security
Java programs are designed to be downloaded over the network, which implies security aspects. No one would dare execute downloaded code whose actual content he or she did not know, if he or she did not have information about the code's safety. Security is assured at several levels, and mainly concerns applets.
3.1 Language restrictions
The first level of security is that of the language itself. Java has replaced pointers with references. There is no reference arithmetic in Java similar to the pointer arithmetic of C or C++. It is therefore impossible for the programmer to manipulate memory addresses to access unauthorized areas.
The ability to declare a class or methods as final prohibits any inheritance of the class and any redefinition...
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Java and security
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