String.format

[Panphobia]

I am not exactly sure how to use it at all actually, I could not find it on the API, i went under formatter also but nothing, I just saw it in a program, and I wanted to see if it does what I thought it did, I thought it could cut out X characters from a string, but i am not sure, if you guys know the correct API could you link me? and also if you can't find one can you explain how to use it and what it does?

[Panphobia]

I mean something like this, what would it do to a random string

code:

System.out.println(String.format("%.10f", lol));

[Insectoid]

String.format works like printf in C. You type in a string with some modifiers in it followed by a list of variables. String.format will replace the modifiers with the variables and format them accordingly. Your example is an incorrect usage of the function. %f represents a float, and the .10 is the number of decimal points to output. If you did something like

code:

String.format("%.10f", 1/3)

, it would output 0.3333333333. There is a list of modifiers here.