Defining Classes II - Absolute Java - page 273

The Math Class
The class Math provides a number of standard mathematical methods. The class Math
is provided automatically and requires no import statement. Some of the methods in
the class Math are described in Display 5.6. A more complete list of methods is given
in Appendix 5. All of these methods are static, which means that you normally use the
class name Math in place of a calling object.

Math methods

Display 5.6 Some Methods in the Class Math (part 1 of 2)

The Math class is in the java.lang package, so it requires no import statement.

public static double pow( double base, double exponent)

Returns base to the power exponent .
EXAMPLE
Math.pow(2.0,3.0) returns 8.0.

public static double abs( double argument)
public static float abs( float argument)
public static long abs( long argument)
public static int abs( int argument)

Returns the absolute value of the argument. (The method name abs is overloaded to
produce four similar methods.)
EXAMPLE
Math.abs(-6) and Math.abs(6) both return 6. Math.abs(-5.5) and Math.abs(5.5)
both return 5.5.

public static double min( double n1, double n2)
public static float min( float n1, float n2)
public static long min( long n1, long n2)
public static int min( int n1, int n2)

Returns the minimum of the arguments n1 and n2. (The method name min is overloaded to
produce four similar methods.)

EXAMPLE
Math.min(3, 2) returns 2.

public static double max( double n1, double n2)
public static float max( float n1, float n2)
public static long max( long n1, long n2)
public static int max( int n1, int n2)

Returns the maximum of the arguments n1 and n2. (The method name max is overloaded to
produce four similar methods.)

EXAMPLE
Math.max(3, 2) returns 3.

(continued)