Reuse a parameter in String.format?

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String hello = "Hello";

String.format("%s %s %s %s %s %s", hello, hello, hello, hello, hello, hello);

hello hello hello hello hello hello

Does the hello variable need to be repeated multiple times in the call to the format method or is there a shorthand version that lets you specify the argument once to be applied to all of the %s tokens?

string-formatting java string
4 Answers

You need to use the index argument %[argument_index$] as the following:

String hello = "Hello";
String.format("%1$s %1$s %1$s %1$s %1$s %1$s", hello);

Result: Hello Hello Hello Hello Hello Hello

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