How do I make claim environment bold?

Question

I have defined my claim environment in the following way:

\newcounter{claimcounter}
\newenvironment{claim}{\stepcounter{claimcounter}{Claim \theclaimcounter:}}{}

It looks like this:

Claim 1

How can I make it to look like this: Claim 1?

Answer 1

You really ought to use a theorem-like construction instead.

\newtheorem{claim}{Claim}

will by default give you want you want.