Expressions and Operators
An expression is a statement that can convey a value. Some of the most common expressions are mathematical, such as in the following source code example:
int x = 3; int y = x; int z = x * y;
All three of these statements can be considered expressions—they convey values that can be assigned to variables. The first assigns the literal 3 to the variable x. The second assigns the value of the variable x to the variable y. The multiplication operator * is used to multiply the x and y integers, and the expression produces the result of the multiplication. This result is stored in the z integer.
An expression can be any combination of variables, literals, and operators. They also can be method calls, because methods can ...