Project Euler Problems 1 to 100 - Problem 1: Multiples of 3 and 5

Tell us what’s happening:
Describe your issue in detail here.
i have no issue regarding code
can’t I use java for solving project euler problems

how to change the language or can I just open the editor and type java code
Your code so far

function multiplesOf3and5(number) {

  return true;
}

multiplesOf3and5(1000);

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Challenge: Project Euler Problems 1 to 100 - Problem 1: Multiples of 3 and 5

Link to the challenge:

You can, just not on freeCodeCamp.

To expand on that, Project Euler is language agnostic. You write and run your own code and then verify your solution. freeCodeCamp has taken the time to build some of the Project Euler challenges into their interactive code runner to make the experience similar to the JavaScript lessons on freeCodeCamp.