Java programmers love string interpolation features.
If you’re not a coder, you’re probably confused by the word “interpolation” here, because it’s been borrowed as programming jargon where it’s not a very good linguistic fit…
…but the idea is simple, very powerful, and sometimes spectacularly dangerous.
In other programming ecosystems it’s often known simply as string substitution, where string is shorthand for a bunch of characters, usually meant for displaying or printing out, and substitution means exactly what it says.
For example, in the Bash command shell, if you run the command:
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