Java generating Strings with placeholders

Question

I\'m looking for something to achieve the following:

String s = \"hello {}!\";
s = generate(s, new Object[]{ \"world\" });
assertEquals(s, \"hello world!\");         


        

Answer 1

See String.format method.

String s = "hello %s!";
s = String.format(s, "world");
assertEquals(s, "hello world!"); // should be true