Переменная short в java

Class Short

The Short class wraps a value of primitive type short in an object. An object of type Short contains a single field whose type is short .

In addition, this class provides several methods for converting a short to a String and a String to a short , as well as other constants and methods useful when dealing with a short .

This is a value-based class; programmers should treat instances that are equal as interchangeable and should not use instances for synchronization, or unpredictable behavior may occur. For example, in a future release, synchronization may fail.

Field Summary

Constructor Summary

Method Summary

Returns the value obtained by reversing the order of the bytes in the two’s complement representation of the specified short value.

Returns a Short object holding the value extracted from the specified String when parsed with the radix given by the second argument.

Methods declared in class java.lang.Object

Field Details

MIN_VALUE

MAX_VALUE

TYPE

SIZE

BYTES

Constructor Details

Short

It is rarely appropriate to use this constructor. The static factory valueOf(short) is generally a better choice, as it is likely to yield significantly better space and time performance.

Short

It is rarely appropriate to use this constructor. Use parseShort(String) to convert a string to a short primitive, or use valueOf(String) to convert a string to a Short object.

Constructs a newly allocated Short object that represents the short value indicated by the String parameter. The string is converted to a short value in exactly the manner used by the parseShort method for radix 10.

Method Details

toString

parseShort

• The first argument is null or is a string of length zero.
• The radix is either smaller than Character.MIN_RADIX or larger than Character.MAX_RADIX .
• Any character of the string is not a digit of the specified radix, except that the first character may be a minus sign ‘-‘ ( ‘\u002D’ ) or plus sign ‘+’ ( ‘\u002B’ ) provided that the string is longer than length 1.
• The value represented by the string is not a value of type short .

parseShort

Parses the string argument as a signed decimal short . The characters in the string must all be decimal digits, except that the first character may be an ASCII minus sign ‘-‘ ( ‘\u002D’ ) to indicate a negative value or an ASCII plus sign ‘+’ ( ‘\u002B’ ) to indicate a positive value. The resulting short value is returned, exactly as if the argument and the radix 10 were given as arguments to the parseShort(java.lang.String, int) method.

valueOf

Returns a Short object holding the value extracted from the specified String when parsed with the radix given by the second argument. The first argument is interpreted as representing a signed short in the radix specified by the second argument, exactly as if the argument were given to the parseShort(java.lang.String, int) method. The result is a Short object that represents the short value specified by the string. In other words, this method returns a Short object equal to the value of:

valueOf

Returns a Short object holding the value given by the specified String . The argument is interpreted as representing a signed decimal short , exactly as if the argument were given to the parseShort(java.lang.String) method. The result is a Short object that represents the short value specified by the string. In other words, this method returns a Short object equal to the value of:

describeConstable

valueOf

Returns a Short instance representing the specified short value. If a new Short instance is not required, this method should generally be used in preference to the constructor Short(short) , as this method is likely to yield significantly better space and time performance by caching frequently requested values. This method will always cache values in the range -128 to 127, inclusive, and may cache other values outside of this range.

decode

Decodes a String into a Short . 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 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 Short.parseShort 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 .

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Переменная short в java

The Short class wraps a value of primitive type short in an object. An object of type Short contains a single field whose type is short . In addition, this class provides several methods for converting a short to a String and a String to a short , as well as other constants and methods useful when dealing with a short .

Field Summary

Constructor Summary

Method Summary

Returns the value obtained by reversing the order of the bytes in the two’s complement representation of the specified short value.

Returns a Short object holding the value extracted from the specified String when parsed with the radix given by the second argument.

Methods declared in class java.lang.Object

Field Detail

MIN_VALUE

public static final short MIN_VALUE

MAX_VALUE

public static final short MAX_VALUE

TYPE

SIZE

public static final int SIZE

BYTES

public static final int BYTES

Constructor Detail

Short

@Deprecated(since="9") public Short​(short value)

It is rarely appropriate to use this constructor. The static factory valueOf(short) is generally a better choice, as it is likely to yield significantly better space and time performance.

Short

@Deprecated(since="9") public Short​(String s) throws NumberFormatException

It is rarely appropriate to use this constructor. Use parseShort(String) to convert a string to a short primitive, or use valueOf(String) to convert a string to a Short object.

Constructs a newly allocated Short object that represents the short value indicated by the String parameter. The string is converted to a short value in exactly the manner used by the parseShort method for radix 10.

Method Detail

toString

parseShort

public static short parseShort​(String s, int radix) throws NumberFormatException

• The first argument is null or is a string of length zero.
• The radix is either smaller than Character.MIN_RADIX or larger than Character.MAX_RADIX .
• Any character of the string is not a digit of the specified radix, except that the first character may be a minus sign ‘-‘ ( ‘\u002D’ ) or plus sign ‘+’ ( ‘\u002B’ ) provided that the string is longer than length 1.
• The value represented by the string is not a value of type short .

parseShort

public static short parseShort​(String s) throws NumberFormatException

Parses the string argument as a signed decimal short . The characters in the string must all be decimal digits, except that the first character may be an ASCII minus sign ‘-‘ ( ‘\u002D’ ) to indicate a negative value or an ASCII plus sign ‘+’ ( ‘\u002B’ ) to indicate a positive value. The resulting short value is returned, exactly as if the argument and the radix 10 were given as arguments to the parseShort(java.lang.String, int) method.

valueOf

public static Short valueOf​(String s, int radix) throws NumberFormatException

Returns a Short object holding the value extracted from the specified String when parsed with the radix given by the second argument. The first argument is interpreted as representing a signed short in the radix specified by the second argument, exactly as if the argument were given to the parseShort(java.lang.String, int) method. The result is a Short object that represents the short value specified by the string. In other words, this method returns a Short object equal to the value of:

valueOf

public static Short valueOf​(String s) throws NumberFormatException

Returns a Short object holding the value given by the specified String . The argument is interpreted as representing a signed decimal short , exactly as if the argument were given to the parseShort(java.lang.String) method. The result is a Short object that represents the short value specified by the string. In other words, this method returns a Short object equal to the value of:

valueOf

Returns a Short instance representing the specified short value. If a new Short instance is not required, this method should generally be used in preference to the constructor Short(short) , as this method is likely to yield significantly better space and time performance by caching frequently requested values. This method will always cache values in the range -128 to 127, inclusive, and may cache other values outside of this range.

decode

public static Short decode​(String nm) throws NumberFormatException

Decodes a String into a Short . 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 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 Short.parseShort 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 .

byteValue

shortValue

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