public void setDecimalSeparator(char decimalSeparator)

// Java program to demonstrate
// the above method
  
import java.text.*;
import java.util.*;
  
public class DecimalFormatSymbolsDemo {
    public static void main(String[] args)
    {
  
        DecimalFormatSymbols dfs
            = new DecimalFormatSymbols();
  
        System.out.println("Current Character used "
                           + "for decimal separator: "
                           + dfs.getDecimalSeparator());
  
        char decimalSeparator = '*';
  
        dfs.setDecimalSeparator(decimalSeparator);
  
        System.out.println("Updated Character used "
                           + "for decimal separator: "
                           + dfs.getDecimalSeparator());
    }
}

Current Character used for decimal separator: .
Updated Character used for decimal separator: *