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public final class java.lang.Math
extends java.lang.Object (I-§1.12)
{
// Fields
public final static double E; §1.10.1
public final static double PI; §1.10.2
// Methods
public static double abs(double a); §1.10.3
public static float abs(float a); §1.10.4
public static int abs(int a); §1.10.5
public static long abs(long a); §1.10.6
public static double acos(double a); §1.10.7
public static double asin(double a); §1.10.8
public static double atan(double a); §1.10.9
public static double atan2(double a, double b); §1.10.10
public static double ceil(double a); §1.10.11
public static double cos(double a); §1.10.12
public static double exp(double a); §1.10.13
public static double floor(double a); §1.10.14
public static double §1.10.15
IEEEremainder(double f1, double f2);
public static double log(double a); §1.10.16
public static double max(double a, double b); §1.10.17
public static float max(float a, float b); §1.10.18
public static int max(int a, int b); §1.10.19
public static long max(long a, long b); §1.10.20
public static double min(double a, double b); §1.10.21
public static float min(float a, float b); §1.10.22
public static int min(int a, int b); §1.10.23
public static long min(long a, long b); §1.10.24
public static double pow(double a, double b); §1.10.25
public static double random(); §1.10.26
public static double rint(double a); §1.10.27
public static long round(double a); §1.10.28
public static int round(float a); §1.10.29
public static double sin(double a); §1.10.30
public static double sqrt(double a); §1.10.31
public static double tan(double a); §1.10.32
}
The class Math contains methods for performing basic numerical operations such as the
elementary exponential, logarithm, square root, and trigononetric functions.
public final static double E = 2.7182818284590452354
public final static double PI = 3.14159265358979323846
, the ratio of the circumference of a circle to its diameter.
public static double abs(double a)
a
- a double value
public static float abs(float a)
a
-
public static int abs(int a)
a
-
public static long abs(long a)
a
- a long value.
public static double acos(double a)
a
- a double value
public static double asin(double a)
a
- a double value
public static double atan(double a)
a
- a double value
public static double atan2(double a, double b)
a
- a double value
b
- a double value
component of the polar coordinate 
that corresponds to
the cartesian coordinate 
.
public static double ceil(double a)
a
- a double value
.
public static double cos(double a)
a
- an angle, in radians.
public static double exp(double a)
a
- a double value
, where where e (I-§1.10.1) is the base of the natural logarithms.
public static double floor(double a)
a
- a double value
a
- an assigned value
.
public static double IEEEremainder(double f1, double f2)
where 
is the mathematical integer closest to the exact mathematical value of the quotient 
, and if two mathematical integers are
equally close to 
then 
is the integer that is even. If the remainder
is zero, its sign is the same as the sign of the first argument.
f1
- the dividend
f2
- the divisor
public static double log(double a)3
a
- a number greater than 0.0
, the natural logarithm of a.
public static double max(double a, double b)
a
- a double value
b
- a double value
public static float max(float a, float b)
a
- a float value
b
- a float value
public static int max(int a, int b)
a
- an int value
b
- an int value
public static long max(long a, long b)
a
- a long value
b
- a long value
public static double min(double a, double b)
a
- a double value
b
- a double value
public static float min(float a, float b)
a
- a float value
b
- a float value
public static int min(int a, int b)
a
- an int value
b
- an int value
public static long min(long a, long b)
a
- a long value
b
- a long value
public static double pow(double a, double b)8
a
- a double value
b
- a double value
.
public static double random()
public static double rint(double a)
a
- a double value
public static long round(double a)
a
- a double value
public static int round(float a)
a
- a float value
public static double sin(double a)
a
- a double value
public static double sqrt(double a)9
a
- a double value
. If the argument is NaN or less than zero, the result is
NaN.
public static double tan(double a)
a
- a double value
2 In Java 1.0, abs(-0.0f) returns -0.0f. This bug is fixed in Java 1.1.
3 In Java 1.0, the method log was declared as follows
public static log sqrt(double a)
throws ArithmeticException
even though the ArithmeticException was never thrown. This bug is fixed in Java 1.1.
4 In Java 1.0, max(-0.0, 0.0) returns -0.0. This bug is fixed in Java 1.1.
5 In Java 1.0, max(-0.0f, 0.0f) returns -0.0f. This bug is fixed in Java 1.1.
6 In Java 1.0, min(0.0, -0.0) returns 0.0. This bug is fixed in Java 1.1.
7 In Java 1.0, min(0.0f, -0.0f) returns 0.0f. This bug is fixed in Java 1.1.
8 In Java 1.0, the method pow was declared as follows
public static double sqrt(double a, double b)
throws ArithmeticException
even though the ArithmeticException was never thrown. This bug is fixed in Java 1.1.
9 In Java 1.0, the method sqrt was declared as follows
public static double sqrt(double a)
throws ArithmeticException
even though the ArithmeticException was never thrown. This bug is fixed in Java 1.1.
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