In C++, I enjoyed having access to a 64 bit unsigned integer, via unsigned long long int, or via uint64_t. Now, in Java longs are 64 bits, I know. However, they are signed.
Is there an unsigned long (long) available as a Java primitive? How do I use it?
I don't believe so. Once you want to go bigger than a signed long, I think BigInteger is the only (out of the box) way to go.
Nope, there is not. You'll have to use the primitive long data type and deal with signedness issues, or use a class such as BigInteger.
No, there isn't. The designers of Java are on record as saying they didn't like unsigned ints. Use a BigInteger instead. See this question for details.
Depending on the operations you intend to perform, the outcome is much the same, signed or unsigned. However, unless you are using trivial operations you will end up using BigInteger.
Java does not have unsigned types. As already mentioned, incure the overhead of BigInteger or use JNI to access native code.
