how widely used is Java, Mac?

[isaac]

I'm a software engineer who just shifted into a government lab that
does sequencing/assembly.  No one here ever uses Java and it really
shows in the lack of reusable components/infrastructure.  One coworker
suspected that the main reason Java was so unpopular was that Macs
were the platform of choice for many biologists ( and one that Java
supports poorly ).

What do most people use in the biotech industry for building their
larger-midrange applications?  Is Mac really that popular?

Isaac

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