It's worth noting that const behaves completely differently in C and C++. In C, it behaves more like a "special" global variable. That is to say, you can declare a constant in one file and use "extern" to access it in another file. You also can't do this:
const int ARRAYSIZE = 10;

int array[ARRAYSIZE];
In the C++ world, everyone hates the preprocessor, so Stroustrop "hijacked" the const keyword to replace the use of #define for constants. All constants are module-local (like they had the "static" keyword used). To get the same behavior as is default in C, you have to do something like this:
This means that you can put constants into header files more easily.

The designers of Java quite understandably wanted nothing to do with all this mind-breaking inconsistency, which is why constants in Java use the keyword "final" instead.