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Editorial Team
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Asked: 2026-06-12T00:45:55+00:00

In this example – http://jscience.org/api/javax/measure/package-summary.html , when I try to run in clojure, I

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In this example – http://jscience.org/api/javax/measure/package-summary.html, when I try to run in clojure, I get an error.

(import 'javax.measure.unit.SI)
(import 'javax.measure.Measure)

(Measure/valueOf 2 SI/KILOGRAM)
;; => More than one matching method found: valueOf
[Thrown class java.lang.IllegalArgumentException]

Is there anyway around this?

update

the actual java code is this:

public static <Q extends Quantity> Measure<java.lang.Integer, Q> valueOf(
        int intValue, Unit<Q> unit) {
    return new Integer<Q>(intValue, unit);
}

public static <Q extends Quantity> Measure<java.lang.Float, Q> valueOf(
        float floatValue, Unit<Q> unit) {
    return new Float<Q>(floatValue, unit);
}

the error I get is:

More than one matching method found: valueOf
  [Thrown class java.lang.IllegalArgumentException]

Restarts:
 0: [QUIT] Quit to the SLIME top level

Backtrace:
  0:          Compiler.java:2360 clojure.lang.Compiler.getMatchingParams
  1:          Compiler.java:1555 clojure.lang.Compiler$StaticMethodExpr.
  2:           Compiler.java:938 clojure.lang.Compiler$HostExpr$Parser.parse
  3:          Compiler.java:6455 clojure.lang.Compiler.analyzeSeq
  4:          Compiler.java:6262 clojure.lang.Compiler.analyze
  5:          Compiler.java:6223 clojure.lang.Compiler.analyze
  6:          Compiler.java:5618 clojure.lang.Compiler$BodyExpr$Parser.parse
  7:          Compiler.java:5054 clojure.lang.Compiler$FnMethod.parse
  8:          Compiler.java:3674 clojure.lang.Compiler$FnExpr.parse
  9:          Compiler.java:6453 clojure.lang.Compiler.analyzeSeq
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1 Answer

  1. Editorial Team

    Here are a few basic casting examples:

    (import 'javax.measure.unit.SI)
(import 'javax.measure.Measure)

; Integer Value
; will call: 
;  public static <Q extends Quantity> Measure<java.lang.Integer, Q> valueOf
(Measure/valueOf (Integer. 2) SI/KILOGRAM)

; Long  value 
; will call: 
;  public static <Q extends Quantity> Measure<java.lang.Long, Q> valueOf
(Measure/valueOf (cast Long 2) SI/KILOGRAM)

; Float value
; will call: 
;  public static <Q extends Quantity> Measure<java.lang.Float, Q> valueOf
(Measure/valueOf (Float. 2.0) SI/KILOGRAM)
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