MessageFormat setFormats() method in Java with Example
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
import java.text.*;
import java.util.*;
import java.io.*;
public class GFG {
public static void main(String[] argv)
{
try {
MessageFormat mf
= new MessageFormat( "{0, date, #}, {0, number, #.##}, {0, time}" );
displayFormat(mf);
Format[] format = { new SimpleDateFormat( "YYYY-'W'ww-u" ),
new DecimalFormat( "0.##" ) };
mf.setFormats(format);
System.out.println();
displayFormat(mf);
}
catch (NullPointerException e) {
System.out.println( "format array is null" );
System.out.println( "Exception thrown : " + e);
}
}
public static void displayFormat(MessageFormat mf)
{
System.out.println( "pattern : "
+ mf.toPattern());
Format[] formats = mf.getFormats();
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
import java.text.*;
import java.util.*;
import java.io.*;
public class GFG {
public static void main(String[] argv)
{
try {
MessageFormat mf
= new MessageFormat( "{0, date, #}, {0, number, #.##}, {0, time}" );
displayFormat(mf);
Format[] format = { new SimpleDateFormat( "YYYY-'W'ww-u" ),
new DecimalFormat( "0.##" ) };
mf.setFormats( null );
System.out.println();
displayFormat(mf);
}
catch (NullPointerException e) {
System.out.println( "\nformat array is null" );
System.out.println( "Exception thrown : " + e);
}
}
public static void displayFormat(MessageFormat mf)
{
System.out.println( "pattern : "
+ mf.toPattern());
Format[] formats = mf.getFormats();
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
Reference: https://docs.oracle.com/javase/9/docs/api/java/text/MessageFormat.html#setFormats-java.text.Format:A-
Last Updated :
16 Aug, 2021
Like Article
Save Article
Share your thoughts in the comments
Please Login to comment...