table of Contents
java.lang 包
Integer
- Construction method
- Integer(int number);
- integer (String str); numeric String
- constant:
- MAX_VALUE int type maximum
- MIN_VALUE int type minimum
- SIZE bits int value's complement
- Class Examples TYPE basic type int
- Common method
Boolean
- Construction method
- Boolean(boolean value);
- Boolean (String str); equal to true if the String argument is not null, and ignoring case, to assign a true representation of the object, false otherwise assigned
- constant
- TRUE, the corresponding value of true Boolean object group
- FALSE, the corresponding group of Boolean object is false
- TYPE, substantially Class object type boolean
- Common method
Byte
- Construction method
- Byte(byte value);
- Byte (String str); String argument must be numeric
- constant
- MIN_VALUE, byte type The minimum value
- MAX_VALUE, byte type the maximum possible value
- byte value SIZE, expressed in the form of two's complement
- TYPE, Class instance representing the primitive type byte
- Common method
Character
- Construction method
- Character(char value)
- Constant, Character constants provide a large number represents a particular character
- CONNECTOR_PUNCTUATION, return a byte value that indicates the category of conventional Pc Unicode specification
- UNASSIGNED, return a byte value representing the conventional Cn Unicode category specification
- TITLECASE_LETTER, return a byte value that indicates the category of conventional Lt Unicode specification
- Common method
Double
- Construction method
- Double(double value);
- Double (String str); String parameter value type of a string
- constant
- MAX_EXPONENT, returns an int value that indicates the limited double variable may have the greatest exponent
- MIN_EXPONENT, returns an int value that represents the normalized double variable may have the lowest index
- NEGATIVE_INFINITY, returns a double value that represents the preservation of type double negative infinity constants
- POSITIVE_INFINITY, returns a double value representing positive infinity of type double save constants
- Common method
Number
- An abstract class is a superclass Number BigDecimal, BigInteger, Byte, Double, Float, Integer, Long and Short class, subclass must provide Number of converting the value represented by byte, double, float, int, long, and short way
- Method Number class are implemented by the respective subclass Number, that is, in all subclasses Number class contains the following method
