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Categories / Java Book / 003 Essential Classes

 

0165 Float class

Float class wraps a value of type float in an object. Field Summary static int MAX_EXPONENT Maximum exponent a finite float. static float MAX_VALUE Largest positive finite value of type float. static int MIN_EXPONENT Minimum exponent a normalized float variable may have. static float MIN_NORMAL Smallest positive normal value of type float. static float MIN_VALUE Smallest positive nonzero value of type float. static float NaN Not-a-Number (NaN) value of type float. static float NEGATIVE_INFINITY Negative infinity of type float. static float POSITIVE_INFINITY Positive infinity of type float. static int SIZE The number of bits used to represent a float value. static Class TYPE The Class instance representing the primitive type float. Constructor Float(double value) Creates a Float from double-type value. Float(float value) Creates a Float for the float argument. Float(String s) Creates a Float from a float represented by the string. Convert to byte, double, float, int, long and short byte byteValue() Returns this float as a byte. double doubleValue() Returns the double value. float floatValue() Returns the float value. int intValue() Returns this float as an int by casting to type int. long longValue() Returns this float as a long. short shortValue() Returns this float as a short by casting. Convert float value to String value static String toHexString(float f) Returns a hexadecimal string representation of the float argument. String toString() Returns a string representation of this Float object. static String toString(float f) Returns a string representation of the float argument. Convert string value to float value static float parseFloat(String s) Returns a new float initialized to the value represented by the specified String. static Float valueOf(float f) Returns a Float instance representing the specified float value. static Float valueOf(String s) Returns a Float object holding the float value represented by the argument string s. Compare two float objects static int compare(float f1, float f2) Compares the two specified float values. int compareTo(Float anotherFloat) Compares two Float objects numerically. boolean equals(Object obj) Compares this object against the specified object. Infinite and NaN(Not A Number) boolean isInfinite() Returns true if this Float value is infinitely large in magnitude, false otherwise. static boolean isInfinite(float v) Returns true if the specified number is infinitely large in magnitude, false otherwise. boolean isNaN() Returns true if this Float value is a Not-a-Number (NaN), false otherwise. static boolean isNaN(float v) Returns true if the specified number is a Not-a-Number (NaN) value, false otherwise. Bit oriented static int floatToIntBits(float value) Returns a representation of the specified floating-point value. static int floatToRawIntBits(float value) Returns a representation of the specified floating-point value. static float intBitsToFloat(int bits) Returns the float value corresponding to a given bit representation.