Java double precision. The precision of a double in Java is 10-324 decimal places, although true mathematical precision can suffer due to issues with binary arithmetic. To simplify display, you can ...

The other types of variables in Java are: byte – stores whole numbers from -128 to 127; short – stores numbers from -32,768 to 32,767; int – stores whole numbers from -2,147,483,648 to ...

The Java Shell makes it easy to practice with variable declaration and initialization, as you can see in the examples below (note that semicolon terminators aren’t required).