The setFormatByArgumentIndex() method of java.text.MessageFormat class is used to set the new format element at the particular index in pattern of message format object by overriding the previous pattern.
Syntax:
public void setFormatByArgumentIndex(int argumentIndex, Format newFormat)
Parameters: This method takes the following argument as a parameter.
- argumentIndex :- this is the particular index where new format element is going to be placed.
- newFormat :- this is the new Format element which is going to be placed.
Return Value: This method has nothing to return.
Below are the examples to illustrate the setFormatByArgumentIndex() method:
Example 1:
Java
// Java program to demonstrate // setFormatByArgumentIndex() method import java.text.*;
import java.util.*;
import java.io.*;
public class GFG {
public static void main(String[] argv)
{
// creating and initializing MessageFormat
MessageFormat mf
= new MessageFormat( "{1, date, #}, {3, number, #.##}, {5, time}" );
// display the current pattern
System.out.println( "old pattern : "
+ mf.toPattern());
// getting all the format element
// used in MessageFormat Object
Format[] formats = mf.getFormatsByArgumentIndex();
// setting the new format element
// at particular index
// using setFormatByArgumentIndex() method
for ( int i = 0 ; i < formats.length; i++)
mf.setFormatByArgumentIndex(i, formats[ 1 ]);
// display the result
System.out.println( "\nnew pattern : "
+ mf.toPattern());
}
} |
Output:
old pattern : {1,date, #}, {3,number, #0.##}, {5,time} new pattern : {1,date, #}, {3,date, #}, {5,date, #}
Example 2:
Java
// Java program to demonstrate // setFormatByArgumentIndex() method import java.text.*;
import java.util.*;
import java.io.*;
public class GFG {
public static void main(String[] argv)
{
// creating and initializing MessageFormat
MessageFormat mf
= new MessageFormat( "{1, date, #}, {3, number, #.##}, {5, time}" );
// display the current pattern
System.out.println( "old pattern : "
+ mf.toPattern());
// creating and initializing new Format element
Format fm = NumberFormat.getInstance();
// setting the new format element
// at particular index
// using setFormatByArgumentIndex() method
for ( int i = 0 ; i < 6 ; i++)
mf.setFormatByArgumentIndex(i, fm);
// display the result
System.out.println( "\nnew pattern : "
+ mf.toPattern());
}
} |
Output:
old pattern : {1,date, #}, {3,number, #0.##}, {5,time} new pattern : {1,number}, {3,number}, {5,number}