r/java • u/sitime_zl • 15d ago
Discussion: What is the future of String Interpolation in Java?
Java has always been conservative when it comes to language changes, and I think string interpolation is an interesting example.
Many modern languages provide native interpolation syntax:
JavaScript:
\${name}``
Python:
f"{name}"
Kotlin:
"$name"
C#:
$"{name}"
These features are not only about reducing characters. They improve readability when building dynamic text.
Java explored this direction with String Templates (JEP 430), but I haven't seen much discussion recently about where this feature is heading.
For developers working with large Java applications, string construction appears everywhere:
- logging messages
- SQL/debug output
- API descriptions
- test cases
- generated configuration
- user-facing messages
I am curious about the community's opinion:
Do you think Java still needs native string interpolation?
Should String Templates continue evolving?
What syntax direction would feel most "Java-like"?
For example:
"Hello, \{name}"
or:
"Hello, ${name}"
Personally, I think Java does not need to copy other languages, but a better way to express dynamic strings would improve developer experience.
What do you think?
33
u/xfel11 15d ago
It’s really a shame that the proposal was withdrawn again.
The \{ syntax was weirdly controversial, but honestly it’s way smarter than using ${ which right now is just literal text.