The setFormats() method of java.text.MessageFormat class is used to set the array of new format element in the pattern of message format object by overriding the old pattern.
Syntax:
public void setFormats(Format[] newFormats)
Parameter: This method takes array of format element as a parameter for overriding the old pattern of message format object.
Return Value: This method has nothing to return.
Exception: This method throws NullPointerException if array of new format element is null.
Below are the examples to illustrate the setFormats() method:
Example 1:
Java
// Java program to demonstrate // setFormats() method import java.text.*;
import java.util.*;
import java.io.*;
public class GFG {
public static void main(String[] argv)
{
try {
// creating and initializing MessageFormat
MessageFormat mf
= new MessageFormat( "{0, date, #}, {0, number, #.##}, {0, time}" );
// display the current message format object
displayFormat(mf);
// creating and initializing new Format object array
Format[] format = { new SimpleDateFormat( "YYYY-'W'ww-u" ),
new DecimalFormat( "0.##" ) };
// setting the new array of formats
// in the pattern of MessageFormat object
// using setFormats() method
mf.setFormats(format);
// display the Override MessageFormat object
System.out.println();
displayFormat(mf);
}
catch (NullPointerException e) {
System.out.println( "format array is null" );
System.out.println( "Exception thrown : " + e);
}
}
// Defining displayFormat method
public static void displayFormat(MessageFormat mf)
{
// display the result
System.out.println( "pattern : "
+ mf.toPattern());
// getting all format
// used in MessageFormat Object
// using getFormats() method
Format[] formats = mf.getFormats();
// display the result
System.out.println( "Required Formats are : " );
for ( int i = 0 ; i < formats.length; i++)
System.out.println(formats[i]);
}
} |
Output:
pattern : {0, date, #}, {0, number, #0.##}, {0, time} Required Formats are : java.text.SimpleDateFormat@403 java.text.DecimalFormat@674fc java.text.SimpleDateFormat@8400729 pattern : {0, date, YYYY-'W'ww-u}, {0, number, #0.##}, {0, time} Required Formats are : java.text.SimpleDateFormat@d21287d2 java.text.DecimalFormat@674dc java.text.SimpleDateFormat@8400729
Example 2:
Java
// Java program to demonstrate // setFormats() method import java.text.*;
import java.util.*;
import java.io.*;
public class GFG {
public static void main(String[] argv)
{
try {
// creating and initializing MessageFormat
MessageFormat mf
= new MessageFormat( "{0, date, #}, {0, number, #.##}, {0, time}" );
// display the current message format object
displayFormat(mf);
// creating and initializing new Format object array
Format[] format = { new SimpleDateFormat( "YYYY-'W'ww-u" ),
new DecimalFormat( "0.##" ) };
// setting the new array of formats
// in the pattern of MessageFormat object
// using setFormats() method
mf.setFormats( null );
// display the Override MessageFormat object
System.out.println();
displayFormat(mf);
}
catch (NullPointerException e) {
System.out.println( "\nformat array is null" );
System.out.println( "Exception thrown : " + e);
}
}
// Defining displayFormat method
public static void displayFormat(MessageFormat mf)
{
// display the result
System.out.println( "pattern : "
+ mf.toPattern());
// getting all format
// used in MessageFormat Object
// using getFormats() method
Format[] formats = mf.getFormats();
// display the result
System.out.println( "Required Formats are : " );
for ( int i = 0 ; i < formats.length; i++)
System.out.println(formats[i]);
}
} |
Output:
pattern : {0, date, #}, {0, number, #0.##}, {0, time} Required Formats are : java.text.SimpleDateFormat@403 java.text.DecimalFormat@674fc java.text.SimpleDateFormat@8400729 format array is null Exception thrown : java.lang.NullPointerException