Using Dot “.” as the Decimal Separator in Java

How To Use Dot “.” As The Decimal Separator in Java

Java is an incredibly versatile programming language and one of its key features is the ability to use different number formats. For example, if you’re working with numerical values, such as prices or bank accounts, you may need to use a dot “.” as the decimal separator. In this article, we’ll discuss how to use dot “.” as the decimal separator in Java.

Decimal Format Syntax

In Java, the decimal format syntax can be used to specify how numbers are displayed. The syntax for this is as follows:

 DecimalFormat df = new DecimalFormat("#.##"); 

The # symbol is a placeholder which will allow any number of digits before and after the dot. The number of #’s determines how many digits of precision are displayed. For example, using #.### will display 3 digits after the decimal point.

Setting The Decimal Separator

You can set the decimal separator in Java by using the DecimalFormatSymbols class. This class provides a set of symbols that can be used to customize the formatting of numbers. To set the decimal separator to dot “.”, you can use the following code:

 DecimalFormatSymbols dfs = new DecimalFormatSymbols(); 
 dfs.setDecimalSeparator('.'); 
 DecimalFormat df = new DecimalFormat("#.##", dfs); 

This code will create a new instance of DecimalFormat with the specified formatting, and set the decimal separator to dot “.”.

Using The Decimal Format

Once you’ve created the DecimalFormat object with the dot “.” as the decimal separator, you can use it to format numbers. To do this, you simply call the format() function on the DecimalFormat object, passing it a double value that needs to be formatted.

 double value = 123.456; 
 String result = df.format(value); 

This will return the string “123.46”, which is the value of the double “value” formatted with two decimal places.

Conclusion

In this article, we discussed how to use dot “.” as the decimal separator in Java. We looked at the DecimalFormat syntax, how to set the decimal separator, and how to use the DecimalFormat object to format numbers. With this knowledge, you should have no trouble working with numbers in your Java applications.