Integer

java.lang.Object
- java.lang.Number
- - java.lang.Integer

All Implemented Interfaces:

Comparable<Integer>
```
public final class Integer
extends Number
implements Comparable<Integer>
```
Minimal Integer implementation that supports converting an int to a String.

Author:

others, Sven Köhler

Field Summary

Fields
Modifier and Type	Field and Description
`static int`	`MAX_VALUE` The largest value of type `int`.
`static int`	`MIN_VALUE` The smallest value of type `int`.
`static int`	`SIZE`
`static Class<?>`	`TYPE`

Constructor Summary

Constructors
Constructor and Description

Integer(int value)
Constructs a newly allocated Integer object that represents the primitive int argument.

Integer(String s)

Constructors
Constructor and Description
`Integer(int value)` Constructs a newly allocated `Integer` object that represents the primitive `int` argument.
`Integer(String s)`

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`static int`	`bitCount(int v)`
`byte`	`byteValue()` Return the byte value of this Number.
`int`	`compareTo(Integer ob)` Compares this with another Object.
`static Integer`	`decode(String s)`
`double`	`doubleValue()` Return the double value of this Number.
`boolean`	`equals(Object o)`
`float`	`floatValue()` Return the float value of this Number.
`static Integer`	`getInteger(String name)`
`static Integer`	`getInteger(String name, int def)`
`static Integer`	`getInteger(String name, Integer def)`
`int`	`hashCode()`
`static int`	`highestOneBit(int v)`
`int`	`intValue()` returns the value of this Integer as int
`long`	`longValue()` Return the long value of this Number.
`static int`	`lowestOneBit(int v)`
`static int`	`numberOfLeadingZeros(int v)`
`static int`	`numberOfTrailingZeros(int v)`
`static int`	`parseInt(String s)`
`static int`	`parseInt(String s, int radix)` This method parses an int from a String.
`static int`	`reverse(int v)`
`static int`	`reverseBytes(int v)`
`static int`	`rotateLeft(int v, int bits)`
`static int`	`rotateRight(int v, int bits)`
`short`	`shortValue()` Return the short value of this Number.
`static int`	`signnum(long i)`
`static String`	`toBinaryString(int v)`
`static String`	`toHexString(int v)` Return the hex representation of an int as a String
`static String`	`toOctalString(int v)`
`String`	`toString()` Returns a String object representing this Integer's value.
`static String`	`toString(int v)` Returns a new String object representing the specified integer.
`static String`	`toString(int v, int radix)`
`static Integer`	`valueOf(int v)`
`static Integer`	`valueOf(String s)`
`static Integer`	`valueOf(String s, int radix)`

Methods inherited from class java.lang.Object
getClass, notify, notifyAll, wait, wait, wait

- Field Detail
  - MAX_VALUE
```
public static final int MAX_VALUE
```
    The largest value of type int. The constant value of this field is 2147483647.
    
    See Also:
    
    Constant Field Values
  - MIN_VALUE
```
public static final int MIN_VALUE
```
    The smallest value of type int. The constant value of this field is -2147483648.
    
    See Also:
    
    Constant Field Values
  - SIZE
```
public static final int SIZE
```
    See Also:
    
    Constant Field Values
  - TYPE
```
public static final Class<?> TYPE
```
- Constructor Detail
  - Integer
```
public Integer(int value)
```
    Constructs a newly allocated Integer object that represents the primitive int argument.
    
    Parameters:
    
    value - the value to be represented by the Integer.
  - Integer
```
public Integer(String s)
```
- Method Detail
  - bitCount
```
public static int bitCount(int v)
```
  - byteValue
```
public byte byteValue()
```
    Description copied from class: Number
    
    Return the byte value of this Number.
    
    Overrides:
    
    byteValue in class Number
    
    Returns:
    
    the byte value
  - compareTo
```
public int compareTo(Integer ob)
```
    Description copied from interface: Comparable
    
    Compares this with another Object. Returns -1 if this object is smaller, 0 if both objects are equal and 1 if this object is bigger.
    
    Specified by:
    
    compareTo in interface Comparable<Integer>
    
    Parameters:
    
    ob - the object to compare with
    
    Returns:
    
    one of the values -1, 0, 1
  - decode
```
public static Integer decode(String s)
```
  - doubleValue
```
public double doubleValue()
```
    Description copied from class: Number
    
    Return the double value of this Number.
    
    Specified by:
    
    doubleValue in class Number
    
    Returns:
    
    the double value
  - equals
```
public boolean equals(Object o)
```
    Overrides:
    
    equals in class Object
  - floatValue
```
public float floatValue()
```
    Description copied from class: Number
    
    Return the float value of this Number.
    
    Specified by:
    
    floatValue in class Number
    
    Returns:
    
    the float value
  - getInteger
```
public static Integer getInteger(String name)
```
  - getInteger
```
public static Integer getInteger(String name,
                                 int def)
```
  - getInteger
```
public static Integer getInteger(String name,
                                 Integer def)
```
  - hashCode
```
public int hashCode()
```
    Overrides:
    
    hashCode in class Object
  - highestOneBit
```
public static int highestOneBit(int v)
```
  - intValue
```
public int intValue()
```
    returns the value of this Integer as int
    
    Specified by:
    
    intValue in class Number
    
    Returns:
    
    the int value represented by this object.
  - longValue
```
public long longValue()
```
    Description copied from class: Number
    
    Return the long value of this Number.
    
    Specified by:
    
    longValue in class Number
    
    Returns:
    
    the long value
  - lowestOneBit
```
public static int lowestOneBit(int v)
```
  - numberOfLeadingZeros
```
public static int numberOfLeadingZeros(int v)
```
  - numberOfTrailingZeros
```
public static int numberOfTrailingZeros(int v)
```
  - parseInt
```
public static int parseInt(String s)
```
  - parseInt
```
public static int parseInt(String s,
                           int radix)
```
    This method parses an int from a String. The string can contain letters if the number system is larger than decimal, such as hexidecimal numbers.
    
    Parameters:
    
    s - The number string e.g. "123" or "FF" if radix is 16.
    
    radix - The base number system e.g. 16
    
    Returns:
    
    the integer value
    
    Throws:
    
    NumberFormatException
  - reverse
```
public static int reverse(int v)
```
  - reverseBytes
```
public static int reverseBytes(int v)
```
  - rotateLeft
```
public static int rotateLeft(int v,
                             int bits)
```
  - rotateRight
```
public static int rotateRight(int v,
                              int bits)
```
  - shortValue
```
public short shortValue()
```
    Description copied from class: Number
    
    Return the short value of this Number.
    
    Overrides:
    
    shortValue in class Number
    
    Returns:
    
    the short value
  - signnum
```
public static int signnum(long i)
```
  - toBinaryString
```
public static String toBinaryString(int v)
```
  - toHexString
```
public static String toHexString(int v)
```
    Return the hex representation of an int as a String
    
    Parameters:
    
    v - the int
    
    Returns:
    
    the hex string
  - toOctalString
```
public static String toOctalString(int v)
```
  - toString
```
public String toString()
```
    Returns a String object representing this Integer's value. The value is converted to signed decimal representation and returned as a string.
    
    Overrides:
    
    toString in class Object
    
    Returns:
    
    a string representation of the value of this object in base 10.
  - toString
```
public static String toString(int v)
```
    Returns a new String object representing the specified integer. The argument is converted to signed decimal representation and returned as a string, exactly as if the argument and radix 10 were given as arguments to the toString(int, int) method.
    
    Parameters:
    
    v - an integer to be converted.
    
    Returns:
    
    a string representation of the argument in base 10.
  - toString
```
public static String toString(int v,
                              int radix)
```
  - valueOf
```
public static Integer valueOf(int v)
```
  - valueOf
```
public static Integer valueOf(String s)
```
  - valueOf
```
public static Integer valueOf(String s,
                              int radix)
```

Class Integer

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

MAX_VALUE

MIN_VALUE

SIZE

TYPE

Constructor Detail

Integer

Integer

Method Detail

bitCount

byteValue

compareTo

decode

doubleValue

equals

floatValue

getInteger

getInteger

getInteger

hashCode

highestOneBit

intValue

longValue

lowestOneBit

numberOfLeadingZeros

numberOfTrailingZeros

parseInt

parseInt

reverse

reverseBytes

rotateLeft

rotateRight

shortValue

signnum

toBinaryString

toHexString

toOctalString

toString

toString

toString

valueOf

valueOf

valueOf