Java equivalent of unsigned long long?

Question

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?

Answer 1

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.

Answer 2

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.

Answer 3

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.

Answer 4

Java does not have unsigned types. As already mentioned, incure the overhead of BigInteger or use JNI to access native code.

Answer 5

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.