NumberFormat setParseIntegerOnly() method in Java with Examples

Last Updated : 11 Jul, 2025
The setParseIntegerOnly() method is a built-in method of the java.text.NumberFormat which sets whether or not numbers should be parsed as integers only. Syntax: 
public void setParseIntegerOnly(boolean val)
Parameters: The function accepts a mandatory parameter val which specifies the value to be set Return Value: The function returns nothing, hence has a return type void. Below is the implementation of the above function: Program 1: Java 
// Java program to implement
// the above function

import java.text.NumberFormat;
import java.util.Locale;
import java.util.Currency;

public class Main {
    public static void main(String[] args)
        throws Exception
    {

        NumberFormat nF
            = NumberFormat.getNumberInstance();

        System.out.println("set initially as: "
                           + nF.isParseIntegerOnly());

        // Set grouping
        nF.setParseIntegerOnly(false);

        // Print the final
        System.out.println("set finally as: "
                           + nF.isParseIntegerOnly());
    }
}
Output: 
set initially as: false
set finally as: false
Program 2: Java 
// Java program to implement
// the above function

import java.text.NumberFormat;
import java.util.Locale;
import java.util.Currency;

public class Main {
    public static void main(String[] args)
        throws Exception
    {

        NumberFormat nF
            = NumberFormat.getNumberInstance();

        System.out.println("set initially as: "
                           + nF.isParseIntegerOnly());

        // Set grouping
        nF.setParseIntegerOnly(true);

        // Print the final
        System.out.println("set finally as: "
                           + nF.isParseIntegerOnly());
    }
}
Output: 
set initially as: false
set finally as: true
Reference: https://docs.oracle.com/javase/10/docs/api/java/text/NumberFormat.html#setParseIntegerOnly(boolean)
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