MessageFormat parse() method in Java with Example : Set – 2

The parse() method of java.text.MessageFormat class is used to parse the string object starting from the passed parse position in the parse() method.
Syntax:

public Object[] parse(String source,
                      ParsePosition pos)

Parameter: This method takes the following arguments as parameter. 

• source :- string over which parsing is going to perform.
• pos :- it is the starting index of parsing.

Return Value: This method returns array of object as an output.
Exception: This method throws NullPointerException if the parse position is null.
Below are the examples to illustrate the parse() method:
Example 1:

Java

// Java program to demonstrate
// parse() 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, number, #}, {2, number, #.#}, {1, number, #.##}");
            ;

            // creating and initializing String source
            String str = "10.456, 20.325, 30.444";

            // creating and initializing ParsePosition
            ParsePosition pos = new ParsePosition(3);

            // parsing the string starting from pos
            // according to MessageFormat
            // using parse() method
            Object[] hash = mf.parse(str, pos);

            // display the result
            System.out.println("Parsed value are :");
            for (int i = 0; i < hash.length; i++)
                System.out.println(hash[i]);
        }
        catch (NullPointerException e) {
            System.out.println("\nParse position is Null");
            System.out.println("Exception thrown : " + e);
        }
    }
}

Output:

Parsed value are :
456
30.444
20.325

Example 2:

Java

// Java program to demonstrate
// parse() 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, number, #}, {2, number, #.#}, {1, number, #.##}");

            // creating and initializing String source
            String str = "10.456, 20.325, 30.444";

            // creating and initializing ParsePosition
            // ParsePosition pos = new ParsePosition(3);

            // parsing the string starting from pos
            // according to MessageFormat
            // using parse() method
            Object[] hash = mf.parse(str, null);

            // display the result
            System.out.println("Parsed value are :");
            for (int i = 0; i < hash.length; i++)
                System.out.println(hash[i]);
        }
        catch (NullPointerException e) {
            System.out.println("Parse position is Null");
            System.out.println("Exception thrown : " + e);
        }
    }
}

Output:

Parse position is Null
Exception thrown : java.lang.NullPointerException

Reference:https://docs.oracle.com/javase/9/docs/api/java/text/MessageFormat.html#parse-java.lang.String-java.text.ParsePosition-