Class StringCharacterIterator

All Implemented Interfaces:
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.

Since:
1.1
See Also:
CharacterIterator

Fields

Fields declared in interface java.text.CharacterIterator

DONE

Constructors

Constructor Description
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.

Methods

Modifier and Type Method Description
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.

Methods declared in class java.lang.Object

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

Constructors

StringCharacterIterator

public StringCharacterIterator(String text)

Constructs an iterator with an initial index of 0.

Parameters:
text - the String to be iterated over

StringCharacterIterator

public StringCharacterIterator(String text,
                               int pos)

Constructs an iterator with the specified initial index.

Parameters:
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.

Parameters:
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

Methods

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.

Parameters:
text - The String to be iterated over
Since:
1.2

first

public char first()

Implements CharacterIterator.first() for String.

Specified by:
first in interface CharacterIterator
Returns:
the first character in the text, or DONE if the text is empty
See Also:
CharacterIterator.first()

last

public char last()

Implements CharacterIterator.last() for String.

Specified by:
last in interface CharacterIterator
Returns:
the last character in the text, or DONE if the text is empty
See Also:
CharacterIterator.last()

setIndex

public char setIndex(int p)

Implements CharacterIterator.setIndex() for String.

Specified by:
setIndex in interface CharacterIterator
Parameters:
p - the position within the text. Valid values range from getBeginIndex() to getEndIndex(). An IllegalArgumentException is thrown if an invalid value is supplied.
Returns:
the character at the specified position or DONE if the specified position is equal to getEndIndex()
See Also:
CharacterIterator.setIndex(int)

current

public char current()

Implements CharacterIterator.current() for String.

Specified by:
current in interface CharacterIterator
Returns:
the character at the current position or DONE if the current position is off the end of the text.
See Also:
CharacterIterator.current()

next

public char next()

Implements CharacterIterator.next() for String.

Specified by:
next in interface CharacterIterator
Returns:
the character at the new position or DONE if the new position is off the end of the text range.
See Also:
CharacterIterator.next()

previous

public char previous()

Implements CharacterIterator.previous() for String.

Specified by:
previous in interface CharacterIterator
Returns:
the character at the new position or DONE if the current position is equal to getBeginIndex().
See Also:
CharacterIterator.previous()

getBeginIndex

public int getBeginIndex()

Implements CharacterIterator.getBeginIndex() for String.

Specified by:
getBeginIndex in interface CharacterIterator
Returns:
the index at which the text begins.
See Also:
CharacterIterator.getBeginIndex()

getEndIndex

public int getEndIndex()

Implements CharacterIterator.getEndIndex() for String.

Specified by:
getEndIndex in interface CharacterIterator
Returns:
the index after the last character in the text
See Also:
CharacterIterator.getEndIndex()

getIndex

public int getIndex()

Implements CharacterIterator.getIndex() for String.

Specified by:
getIndex in interface CharacterIterator
Returns:
the current index.
See Also:
CharacterIterator.getIndex()

equals

public boolean equals(Object obj)

Compares the equality of two StringCharacterIterator objects.

Overrides:
equals in class Object
Parameters:
obj - the StringCharacterIterator object to be compared with.
Returns:
true if the given obj is the same as this StringCharacterIterator object; false otherwise.
See Also:
Object.hashCode(), HashMap

hashCode

public int hashCode()

Computes a hashcode for this iterator.

Overrides:
hashCode in class Object
Returns:
A hash code
See Also:
Object.equals(java.lang.Object), System.identityHashCode(java.lang.Object)

clone

public Object clone()

Creates a copy of this iterator.

Specified by:
clone in interface CharacterIterator
Overrides:
clone in class Object
Returns:
A copy of this
See Also:
Cloneable

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Documentation extracted from Debian's OpenJDK Development Kit package.
Licensed under the GNU General Public License, version 2, with the Classpath Exception.
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https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/text/StringCharacterIterator.html