程序包 java.text

类 StringCharacterIterator

java.lang.Object

java.text.StringCharacterIterator

所有已实现的接口:

Cloneable, CharacterIterator

public final class StringCharacterIterator
extends Object
implements CharacterIterator

StringCharacterIterator implements the CharacterIterator protocol for a String. The StringCharacterIterator class iterates over the entire String.

另请参阅:

CharacterIterator

字段概要

从接口继承的字段 java.text.CharacterIterator

DONE

构造器概要

构造器

构造器	说明
StringCharacterIterator(String text)	Constructs an iterator with an initial index of 0.
StringCharacterIterator(String text, int pos)	Constructs an iterator with the specified initial index.
StringCharacterIterator(String text, int begin, int end, int pos)	Constructs an iterator over the given range of the given string, with the index set at the specified position.

方法概要

限定符和类型	方法	说明
Object	clone()	Creates a copy of this iterator.
char	current()	Implements CharacterIterator.current() for String.
boolean	equals(Object obj)	Compares the equality of two StringCharacterIterator objects.
char	first()	Implements CharacterIterator.first() for String.
int	getBeginIndex()	Implements CharacterIterator.getBeginIndex() for String.
int	getEndIndex()	Implements CharacterIterator.getEndIndex() for String.
int	getIndex()	Implements CharacterIterator.getIndex() for String.
int	hashCode()	Computes a hashcode for this iterator.
char	last()	Implements CharacterIterator.last() for String.
char	next()	Implements CharacterIterator.next() for String.
char	previous()	Implements CharacterIterator.previous() for String.
char	setIndex(int p)	Implements CharacterIterator.setIndex() for String.
void	setText(String text)	Reset this iterator to point to a new string.

从类继承的方法 java.lang.Object

finalize, getClass, notify, notifyAll, toString, wait, wait, wait

构造器详细资料

StringCharacterIterator

public StringCharacterIterator(String text)

Constructs an iterator with an initial index of 0.

参数:

text - the String to be iterated over

StringCharacterIterator

public StringCharacterIterator(String text,
                               int pos)

Constructs an iterator with the specified initial index.

参数:

text - The String to be iterated over

pos - Initial iterator position

StringCharacterIterator

public StringCharacterIterator(String text,
                               int begin,
                               int end,
                               int pos)

Constructs an iterator over the given range of the given string, with the index set at the specified position.

参数:

text - The String to be iterated over

begin - Index of the first character

end - Index of the character following the last character

pos - Initial iterator position

方法详细资料

setText

public void setText(String text)

Reset this iterator to point to a new string. This package-visible method is used by other java.text classes that want to avoid allocating new StringCharacterIterator objects every time their setText method is called.

参数:

text - The String to be iterated over

从以下版本开始:

1.2

first

public char first()

Implements CharacterIterator.first() for String.

指定者:

first 在接口中 CharacterIterator

返回:

the first character in the text, or DONE if the text is empty

另请参阅:

CharacterIterator.first()

last

public char last()

Implements CharacterIterator.last() for String.

指定者:

last 在接口中 CharacterIterator

返回:

the last character in the text, or DONE if the text is empty

另请参阅:

CharacterIterator.last()

setIndex

public char setIndex(int p)

Implements CharacterIterator.setIndex() for String.

指定者:

setIndex 在接口中 CharacterIterator

参数:

p - the position within the text. Valid values range from getBeginIndex() to getEndIndex(). An IllegalArgumentException is thrown if an invalid value is supplied.

返回:

the character at the specified position or DONE if the specified position is equal to getEndIndex()

另请参阅:

CharacterIterator.setIndex(int)

current

public char current()

Implements CharacterIterator.current() for String.

指定者:

current 在接口中 CharacterIterator

返回:

the character at the current position or DONE if the current position is off the end of the text.

另请参阅:

CharacterIterator.current()

next

public char next()

Implements CharacterIterator.next() for String.

指定者:

next 在接口中 CharacterIterator

返回:

the character at the new position or DONE if the new position is off the end of the text range.

另请参阅:

CharacterIterator.next()

previous

public char previous()

Implements CharacterIterator.previous() for String.

指定者:

previous 在接口中 CharacterIterator

返回:

the character at the new position or DONE if the current position is equal to getBeginIndex().

另请参阅:

CharacterIterator.previous()

getBeginIndex

public int getBeginIndex()

Implements CharacterIterator.getBeginIndex() for String.

指定者:

getBeginIndex 在接口中 CharacterIterator

返回:

the index at which the text begins.

另请参阅:

CharacterIterator.getBeginIndex()

getEndIndex

public int getEndIndex()

Implements CharacterIterator.getEndIndex() for String.

指定者:

getEndIndex 在接口中 CharacterIterator

返回:

the index after the last character in the text

另请参阅:

CharacterIterator.getEndIndex()

getIndex

public int getIndex()

Implements CharacterIterator.getIndex() for String.

指定者:

getIndex 在接口中 CharacterIterator

返回:

the current index.

另请参阅:

CharacterIterator.getIndex()

equals

public boolean equals(Object obj)

Compares the equality of two StringCharacterIterator objects.

覆盖:

equals 在类中 Object

参数:

obj - the StringCharacterIterator object to be compared with.

返回:

true if the given obj is the same as this StringCharacterIterator object; false otherwise.

另请参阅:

Object.hashCode(), HashMap

hashCode

public int hashCode()

Computes a hashcode for this iterator.

覆盖:

hashCode 在类中 Object

返回:

A hash code

另请参阅:

Object.equals(java.lang.Object), System.identityHashCode(java.lang.Object)

clone

public Object clone()

Creates a copy of this iterator.

指定者:

clone 在接口中 CharacterIterator

覆盖:

clone 在类中 Object

返回:

A copy of this

另请参阅:

Cloneable