How is division calculated in Java?

In Java, division is performed using the division operator /. The result of division operation is the quotient of the two operands.

The rules for division operations are as follows:

1. If both the divisor and dividend are integers, then the result will also be an integer. For example, the result of 5 divided by 2 is 2.
2. If at least one of the dividend and divisor is a floating-point number, then the result will also be a floating-point number. For example, the result of 5.0 / 2 is 2.5.
3. If the divisor is 0, an ArithmeticException exception will be thrown.

It is important to note that integer division will truncate the decimal part directly, rather than rounding it. If precise division is needed, floating point types (such as double or float) should be used.