The scikit-learn documentation covers machine learning tools and methods for Python.
Java Interop
Clojure Java Interop documentation explains how Clojure code can access Java classes and methods.
About Java Interop
This page documents how Clojure code accesses Java classes, fields, and methods. It describes class-name resolution, member-access forms, the '.' special form, use of qualified methods as function values since Clojure 1.12, and topics including arrays, vararg methods, type hints, primitives, coercions, streams, XML support, and calling Clojure from Java.
It notes that qualified methods used as values cannot resolve overloads without :param-tags metadata and fall back to reflective calls, and that plain field access may resolve to a same-named no-argument method unless the leading-dash form is used.
Key features
- Access Java classes via fully qualified or imported names
- Access instance and static fields and methods with dot forms
- Use qualified Java methods as ordinary functions in value contexts
- Refer to inner classes with $ separator
- Designate array classes with Classname/N syntax
- Specify method signature with :param-tags metadata
Best for: Clojure programmers who need to access Java classes and methods.
Good for
- Covers class access, member access, arrays, primitives, streams, and calling Clojure from Java
- Shows example expressions and results for class and member access
- Documents idiomatic member forms and field-versus-method resolution rules
Watch out for
- Qualified methods used as values do not resolve overloads and use reflective calls
- Plain field access may resolve to a same-named no-argument method instead
- :param-tags metadata is ignored on unqualified methods
Java Interop at a glance
- Category
- Development › Programming Languages
- Type
- Website
- Pricing
- Not confirmed. Check the site
- Platforms
- Web
- Open source
- Not stated
- Language
- English
- Last checked
- Oct 5, 2026 · Online when checked
- Listed
- Oct 5, 2026
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Java Interop FAQ
How do I refer to a Java inner class in Clojure?
Separate the outer and inner names with $, for example java.util.Map$Entry.
How do I ensure an access is treated as a field?
Use a symbol starting with -, such as (.-x instance) or (. instance-expr -field-symbol), which resolves only as field access.
What happens when an overloaded qualified method is used as a value?
It cannot resolve the overload and produces a reflective call; add :param-tags metadata to specify the signature of one method.
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