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MessageFormat parseObject() method in Java with Example

  • Last Updated : 06 Oct, 2021
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The parseObject() method of java.text.MessageFormat class is used to parse the string object starting from the passed parse position in the parseObject() method.
Syntax: 
 

public Object parseObject(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 parseObject() method:
Example 1: 
 

Java




// Java program to demonstrate
// parseObject() 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(0);
 
            // parsing the string starting from pos
            // according to MessageFormat
            // using parseObject() method
            Object[] hash = (Object[])mf.parseObject(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("Parse position is Null");
            System.out.println("Exception thrown : " + e);
        }
    }
}
Output: 
Parsed value are :
10.456
30.444
20.325

 

Example 2: 
 



Java




// Java program to demonstrate
// parseObject() 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(0);
 
            // parsing the string starting from pos
            // according to MessageFormat
            // using parseObject() method
            Object[] hash = (Object[])mf.parseObject(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#parseObject-java.lang.String-java.text.ParsePosition-
 

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