How to parametrize a string and replace parameters

Question

I have an String that is entered by the end user, and this string should be of the format Showing {0} to {1} of {2} and I would like to replace the parameters in curly brackets with numbers that I compute from the backend. Exactly like it happens for the strings from the properties file.
How can I do that?

Sample input:

Showing {0} to {1} of {2} 

Sample output:

Showing 1 to 12 of 30

Answer 1

You can do this with MessageFormat:

String userInput = "Showing {0} to {1} of {2}";
String result = MessageFormat.format(userInput, 1, 12, 30);

Answer 2

You can use String.format()

Here is how to do that

int a = 1;
int b = 12;
int c = 30;
String myFormattedString = String.format("Showing %d to %d of %d", a, b, c); 
// Value of myFormattedString is 'Showing 1 to 12 of 30'