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Class java.lang.Integer

java.lang.Object
   |
   +----java.lang.Number
           |
           +----java.lang.Integer

public final class Integer

extends Number

Version:

1.13, 18 May 1995

Author:

Lee Boynton, Arthur van Hoff

MAX_VALUE

The maximum value an integer can have.

MIN_VALUE

The minimum value an integer can have.

Integer(int)

Constructs an Integer object with the specified integer value.

Integer(String)

Constructs an Integer object with the specified string value.

doubleValue()

Returns the double value of the Integer.

equals(Object)

Compares this object against some other object.

floatValue()

Returns the float value of the Integer.

hashCode()

Returns a hashcode for this integer.

intValue()

Returns the int value of the Integer.

longValue()

Returns the long value of the Integer.

parseInt(String, int)

Assuming the string represents an integer, returns that integer's value.

parseInt(String)

Assuming the string represents an integer, returns that integer's value.

toString(int, int)

Returns a string object representing the specified integer in the specified radix.

toString(int)

Returns a String object representing an integer.

toString()

Returns a String object representing this integer's value.

valueOf(String, int)

Assuming the string represents an integer, returns a new Integer object with that value.

valueOf(String)

Assuming the string represents an integer, returns a new Integer object with that value.

  public final static int MIN_VALUE

The minimum value an integer can have.

  public final static int MAX_VALUE

The maximum value an integer can have.

  public Integer(int value)

Constructs an Integer object with the specified integer value.

Parameters:

value - the value of the integer

Integer

  public Integer(String s)

Constructs an Integer object with the specified string value. The radix is assumed to be 10.

Parameters:

s - the string to be converted

Throws: NumberFormatException

the string does not contain a parsable integer

  public static String toString(int i,
                                int radix)

Returns a string object representing the specified integer in the specified radix.

Parameters:

i - the integer to be converted

radix - the radix

Returns:

a string representation of the integer

See Also:

MIN_RADIX, MAX_RADIX

toString

  public static String toString(int i)

Returns a String object representing an integer. The radix is assumed to be 10.

Parameters:

i - the integer to be converted

Returns:

a string representation of the integer

parseInt

  public static int parseInt(String s,
                             int radix)

Assuming the string represents an integer, returns that integer's value. Throws an error if the string cannot be parsed as an int.

Parameters:

s - the string containing the integer

radix - the radix to be used

Returns:

the integer value of the string

Throws: NumberFormatException

The string does not contain a parsable integer

parseInt

  public static int parseInt(String s)

Assuming the string represents an integer, returns that integer's value. Throws an error if the string cannot be parsed as an int. The radix is assumed to be 10.

Parameters:

s - the string containing the integer

Returns:

the integer value of the string

Throws: NumberFormatException

The string does not contain a parsable integer

valueOf

  public static Integer valueOf(String s,
                                int radix)

Assuming the string represents an integer, returns a new Integer object with that value. Throws an error if the string cannot be parsed as an int.

Parameters:

s - the string containing the integer

radix - the radix to be used

Returns:

a integer object representing the integer value of the string

Throws: NumberFormatException

The string does not contain a parsable integer

valueOf

  public static Integer valueOf(String s)

Assuming the string represents an integer, returns a new Integer object with that value. Throws an error if the string cannot be parsed as an int. The radix is assumed to be 10.

Parameters:

s - the string containing the integer

radix - the radix to be used

Returns:

a integer object representing the integer value of the string

Throws: NumberFormatException

the string does not contain a parsable integer

intValue

  public int intValue()

Returns the int value of the Integer.

Overrides:

intValue in class Number

longValue

  public long longValue()

Returns the long value of the Integer.

Overrides:

longValue in class Number

floatValue

  public float floatValue()

Returns the float value of the Integer.

Overrides:

floatValue in class Number

doubleValue

  public double doubleValue()

Returns the double value of the Integer.

Overrides:

doubleValue in class Number

toString

  public String toString()

Returns a String object representing this integer's value.

Returns:

a String representing the value of the integer.

Overrides:

toString in class Object

hashCode

  public int hashCode()

Returns a hashcode for this integer.

Returns:

the hashcode

Overrides:

hashCode in class Object

equals

  public boolean equals(Object obj)

Compares this object against some other object.

Parameters:

obj - the object to compare with

Returns:

true if the object is the same

Overrides:

equals in class Object

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