The getFormatsByArgumentIndex() method of java.text.MessageFormat class is used to get the format for every argument index chronologically which is present in the pattern of message format object . if there is no format present for that particular argument index it will just return null.
Syntax:
public Format[] getFormatsByArgumentIndex()
Parameter: This method does not take any argument as a parameter.
Return Value: This method returns format for every argument index which is present in the pattern of message format object chronologically.
Below are the examples to illustrate the getFormatsByArgumentIndex() method:
Example 1:
Java
// Java program to demonstrate// getFormatsByArgumentIndex() methodimport 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, number, integer}, {2, number, float}, {5, date}"); // display the result System.out.println("pattern : " + mf.toPattern()); // getting all the format // used in MessageFormat Object // using getFormatsByArgumentIndex() method Format[] formats = mf.getFormatsByArgumentIndex(); // display the result System.out.println("\nRequired Formats are : "); for (int i = 0; i < formats.length; i++) System.out.println(formats[i]); }} |
Output:
pattern : {1, number, integer}, {2, number, float#}, {5, date}
Required Formats are :
null
java.text.DecimalFormat@674dc
java.text.DecimalFormat@5d69738
null
null
java.text.SimpleDateFormat@ce9bf0a5
Example 2:
Java
// Java program to demonstrate// getFormatsByArgumentIndex() methodimport 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("{0, number, #}, {2, date, #.#}, {4, time}"); // display the result System.out.println("pattern : " + mf.toPattern()); // getting all the format // used in MessageFormat Object // using getFormatsByArgumentIndex() method Format[] formats = mf.getFormatsByArgumentIndex(); // display the result System.out.println("\nRequired Formats are : "); for (int i = 0; i < formats.length; i++) System.out.println(formats[i]); }} |
Output:
pattern : {0, number, #}, {2, date, #.#}, {4, time}
Required Formats are :
java.text.DecimalFormat@674dc
null
java.text.SimpleDateFormat@8918
null
java.text.SimpleDateFormat@8400729
Reference: https://docs.oracle.com/javase/9/docs/api/java/text/MessageFormat.html#getFormatsByArgumentIndex–
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