Java Coding Problems

28. Converting into a number by an unsigned conversion

The problem requires that we convert the given signed int into long via an unsigned conversion. So, let's consider signed Integer.MIN_VALUE, which is -2,147,483,648.

In JDK 8, by using the Integer.toUnsignedLong() method, the conversion will be as follows (the result will be 2,147,483,648):

long result = Integer.toUnsignedLong(Integer.MIN_VALUE);

Here is another example that converts the signed Short.MIN_VALUE and Short.MAX_VALUE into unsigned integers:

int result1 = Short.toUnsignedInt(Short.MIN_VALUE);int result2 = Short.toUnsignedInt(Short.MAX_VALUE);

Other methods from the same category are Integer.toUnsignedString(), Long.toUnsignedString(), Byte.toUnsignedInt(), Byte.toUnsignedLong() ...