NumberFormat isGroupingUsed() method in Java with Examples

The isGroupingUsed() method is a built-in method of the java.text.NumberFormat returns true is grouping is used in the given format, else it returns false. The grouping in English Locale for a number 567879 can be done as “5, 67, 879”, where the size if locale dependent and is determined by its subclass

Syntax:

public boolean isGroupingUsed()

Parameters: The function does not accepts any parameter.

Return Value: The function returns a boolean value, it returns true if grouping can be used in this format, else false.

Below is the implementation of the above function:

Program 1:

// 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
    {

        // Get the instance for Locale US
        NumberFormat nF
            = NumberFormat
                  .getPercentInstance(
                      Locale.US);

        // Prints the hash-code value
        if (nF.isGroupingUsed())
            System.out.println("Yes!"
                               + " grouping is used");
        else
            System.out.println("No!"
                               + " grouping is used");
    }
}

Output:

Yes! grouping is used

Program 2:

// 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
    {

        // Get the instance for Locale CANADA
        NumberFormat nF
            = NumberFormat
                  .getPercentInstance(
                      Locale.CANADA);

        // Prints the hash-code value
        if (nF.isGroupingUsed())
            System.out.println("Yes! "
                               + "grouping is used");
        else
            System.out.println("No! "
                               + "grouping is used");
    }
}

Output:

Yes! grouping is used

Reference: https://docs.oracle.com/javase/10/docs/api/java/text/NumberFormat.html#isGroupingUsed()