Class Integer

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public final class Integer

extends java.lang.Number

implements java.lang.Comparable<java.lang.Integer>, java.lang.constant.Constable, java.lang.constant.ConstantDesc

Fields

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public static final int BYTES = 4
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public static final int MAX_VALUE = 2147483647
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public static final int MIN_VALUE = -2147483648
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public static final int SIZE = 32
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public static final java.lang.Class<java.lang.Integer> TYPE

Constructors

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@Deprecated(since="9"forRemoval=true)
public Integer(int arg0)
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@Deprecated(since="9"forRemoval=true)
public Integer(java.lang.String arg0) throws java.lang.NumberFormatException

Methods

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public static int bitCount(int arg0)
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public byte byteValue()

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byteValue

public byte byteValue()

Returns the value of this Integer as a byte after a narrowing primitive conversion.

Overrides:

byteValue in class Number

Returns:

the numeric value represented by this object after conversion to type byte .

See Java Language Specification:

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public static int compare(int arg0, int arg1)
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public int compareTo(java.lang.Integer arg0)
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public static int compareUnsigned(int arg0, int arg1)
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public static int compress(int arg0, int arg1)
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public static java.lang.Integer decode(java.lang.String arg0) throws java.lang.NumberFormatException
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decode

public static Integer decode (String nm) throws NumberFormatException

Decodes a String into an Integer . Accepts decimal, hexadecimal, and octal numbers given by the following grammar:

DecodableString:

Sign_opt DecimalNumeral

Sign_opt 0x HexDigits

Sign_opt 0X HexDigits

Sign_opt # HexDigits

Sign_opt 0 OctalDigits

Sign:

-

+

DecimalNumeral, HexDigits, and OctalDigits are as defined in section Moved out of a link with destination https://docs.oracle.com/javase/specs/jls/se20/html/jls-3.html#jls-3.10.1.Moved to a link with destination https://docs.oracle.com/javase/specs/jls/se21/html/jls-3.html#jls-3.10.1.3.10.1Moved out of a link with destination https://docs.oracle.com/javase/specs/jls/se20/html/jls-3.html#jls-3.10.1.Moved to a link with destination https://docs.oracle.com/javase/specs/jls/se21/html/jls-3.html#jls-3.10.1. of The Java Language Specification , except that underscores are not accepted between digits.
The sequence of characters following an optional sign and/or radix specifier ("0x ", "0X ", "# ", or leading zero) is parsed as by the Integer.parseInt method with the indicated radix (10, 16, or 8). This sequence of characters must represent a positive value or a NumberFormatException will be thrown. The result is negated if first character of the specified String is the minus sign. No whitespace characters are permitted in the String .

Parameters:

nm - the String to decode.

Returns:

an Integer object holding the int value represented by nm

Throws:

NumberFormatException - if the String does not contain a parsable integer.

See Also:

parseInt(java.lang.String, int)
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public java.util.Optional<java.lang.Integer> describeConstable()
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public static int divideUnsigned(int arg0, int arg1)
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public double doubleValue()

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doubleValue

public double doubleValue()

Returns the value of this Integer as a double after a widening primitive conversion.

Specified by:

doubleValue in class Number

Returns:

the numeric value represented by this object after conversion to type double .

See Java Language Specification:

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public boolean equals(java.lang.Object arg0)
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public static int expand(int arg0, int arg1)
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public float floatValue()

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floatValue

public float floatValue()

Returns the value of this Integer as a float after a widening primitive conversion.

Specified by:

floatValue in class Number

Returns:

the numeric value represented by this object after conversion to type float .

See Java Language Specification:

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public static java.lang.Integer getInteger(java.lang.String arg0)
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public static java.lang.Integer getInteger(java.lang.String arg0, int arg1)
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public static java.lang.Integer getInteger(java.lang.String arg0, java.lang.Integer arg1)
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public int hashCode()
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public static int hashCode(int arg0)
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public static int highestOneBit(int arg0)
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public int intValue()
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public long longValue()
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longValue

public long longValue()

Returns the value of this Integer as a long after a widening primitive conversion.

Specified by:

longValue in class Number

Returns:

the numeric value represented by this object after conversion to type long .

See Java Language Specification:

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See Also:

toUnsignedLong(int)
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public static int lowestOneBit(int arg0)
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public static int max(int arg0, int arg1)
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public static int min(int arg0, int arg1)
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public static int numberOfLeadingZeros(int arg0)
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public static int numberOfTrailingZeros(int arg0)
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public static int parseInt(java.lang.CharSequence arg0, int arg1, int arg2, int arg3) throws java.lang.NumberFormatException
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public static int parseInt(java.lang.String arg0) throws java.lang.NumberFormatException
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public static int parseInt(java.lang.String arg0, int arg1) throws java.lang.NumberFormatException
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public static int parseUnsignedInt(java.lang.CharSequence arg0, int arg1, int arg2, int arg3) throws java.lang.NumberFormatException
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public static int parseUnsignedInt(java.lang.String arg0) throws java.lang.NumberFormatException
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public static int parseUnsignedInt(java.lang.String arg0, int arg1) throws java.lang.NumberFormatException
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public static int remainderUnsigned(int arg0, int arg1)
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public java.lang.Integer resolveConstantDesc(java.lang.invoke.MethodHandles.Lookup arg0)
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public static int reverse(int arg0)
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public static int reverseBytes(int arg0)
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public static int rotateLeft(int arg0, int arg1)
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public static int rotateRight(int arg0, int arg1)
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public short shortValue()

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shortValue

public short shortValue()

Returns the value of this Integer as a short after a narrowing primitive conversion.

Overrides:

shortValue in class Number

Returns:

the numeric value represented by this object after conversion to type short .

See Java Language Specification:

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public static int signum(int arg0)
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public static int sum(int arg0, int arg1)
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public static java.lang.String toBinaryString(int arg0)
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public static java.lang.String toHexString(int arg0)
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public static java.lang.String toOctalString(int arg0)
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public java.lang.String toString()
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public static java.lang.String toString(int arg0)
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public static java.lang.String toString(int arg0, int arg1)
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public static long toUnsignedLong(int arg0)
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public static java.lang.String toUnsignedString(int arg0)
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public static java.lang.String toUnsignedString(int arg0, int arg1)
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public static java.lang.Integer valueOf(int arg0)
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public static java.lang.Integer valueOf(java.lang.String arg0) throws java.lang.NumberFormatException
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public static java.lang.Integer valueOf(java.lang.String arg0, int arg1) throws java.lang.NumberFormatException

Serialized Form

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serialVersionUID

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Serialized Fields

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int value

Summary

Differences
	Added	Added	Added	Changed	Total
	Elements	Comments	Descriptions		Total
byteValue()				1	1
decode(String)				2	2
doubleValue()				1	1
floatValue()				1	1
longValue()				1	1
shortValue()				1	1
Total				7	7

Class Integer

Fields

Constructors

Methods

byteValue

decode

doubleValue

floatValue

longValue

shortValue

Serialized Form

serialVersionUID

Serialized Fields

Summary