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by nine_k 1421 days ago
Not at all. Java the language is not heavyweight (your smart cards and sim cards run Java code inside them!), and the regular JVM can run on pretty low resources.

It's the frameworks and architectural decisions that make Java software feel heavy or light. Very much like with JavaScript, for instance.

Back at some previous job, we ran a lot of small services written in Java; a service consuming 50 MB of heap was considered unusually heavy.