java.lang.Object java.text.FieldPosition
public class FieldPosition
FieldPosition
is a simple class used by Format
and its subclasses to identify fields in formatted output. Fields can be identified in two ways:
_FIELD
. The constants are defined in the various subclasses of Format
.Format.Field
constant, see ERA_FIELD
and its friends in DateFormat
for an example.FieldPosition
keeps track of the position of the field within the formatted output with two indices: the index of the first character of the field and the index of the last character of the field.
One version of the format
method in the various Format
classes requires a FieldPosition
object as an argument. You use this format
method to perform partial formatting or to get information about the formatted output (such as the position of a field).
If you are interested in the positions of all attributes in the formatted string use the Format
method formatToCharacterIterator
.
Format
boolean
equals(Object obj)
int
getBeginIndex()
int
getEndIndex()
int
getField()
Format.Field
getFieldAttribute()
Field
subclasses. int
hashCode()
void
setBeginIndex(int bi)
void
setEndIndex(int ei)
String
toString()
public FieldPosition(int field)
NumberFormat.INTEGER_FIELD
, NumberFormat.FRACTION_FIELD
, DateFormat.YEAR_FIELD
, DateFormat.MONTH_FIELD
public FieldPosition(Format.Field attribute)
Format
subclasses. This is equivalent to calling new FieldPosition(attribute, -1)
.
attribute
- Format.Field constant identifying a field
public FieldPosition(Format.Field attribute, int fieldID)
FieldPosition
object for the given field. The field is identified by an attribute constant from one of the Field
subclasses as well as an integer field ID defined by the Format
subclasses. Format
subclasses that are aware of Field
should give precedence to attribute
and ignore fieldID
if attribute
is not null. However, older Format
subclasses may not be aware of Field
and rely on fieldID
. If the field has no corresponding integer constant, fieldID
should be -1.
attribute
- Format.Field constant identifying a field
fieldID
- integer constantce identifying a field
public Format.Field getFieldAttribute()
Field
subclasses. May return null if the field is specified only by an integer field ID.
public int getField()
public int getBeginIndex()
public int getEndIndex()
public void setBeginIndex(int bi)
public void setEndIndex(int ei)
public boolean equals(Object obj)
equals
in class Object
obj
- the reference object with which to compare.
true
if this object is the same as the obj argument; false
otherwise.
Object.hashCode()
, Hashtable
public int hashCode()
hashCode
in class Object
Object.equals(java.lang.Object)
, Hashtable
public String toString()
toString
in class Object
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