How to format Double with dot?

by

String.format(String, Object ...) is using your JVM’s default locale. You can use whatever locale using String.format(Locale, String, Object ...) or java.util.Formatter directly.

String s = String.format(Locale.US, "%.2f", price);

or

String s = new Formatter(Locale.US).format("%.2f", price);

or

// do this at application startup, e.g. in your main() method
Locale.setDefault(Locale.US);

// now you can use String.format(..) as you did before
String s = String.format("%.2f", price);

or

// set locale using system properties at JVM startup
java -Duser.language=en -Duser.region=US ...

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