A new error occurred in Clojure 1.5.0.
(Java interop: Compiler.load(new StringReader(str));)
# Code #
import java.io.IOException;
import java.io.StringReader;
import clojure.lang.Compiler;
import clojure.lang.RT;
import clojure.lang.Var;
public class Main {
public static void main(String[] args) throws IOException,
ClassNotFoundException {
//clojure.main.main(args);
// Load the Clojure script -- as a side effect this initializes the
runtime.
String str = "(ns user) (defn foo [a b] (str a \" \" b)) (def a
3)";
//RT.loadResourceScript("foo.clj");
Compiler.load(new StringReader(str));
// Get a reference to the foo function.
Var foo = RT.var("user", "foo");
Var a = RT.var("user", "a"); // reference to the variable a
// Call it!
Object result = foo.invoke("Hi", "there");
System.out.println(result);
System.out.println(a);
System.out.println(a.get());
}
}
Test code:
*https://bitbucket.org/ktg/clojureembedtest*<https://bitbucket.org/ktg/clojureembedtest>(Eclipse
project)
Reference: *
http://stackoverflow.com/questions/2181774/calling-clojure-from-java*<http://stackoverflow.com/questions/2181774/calling-clojure-from-java>
$ java -version
java version "1.7.0_15"
OpenJDK Runtime Environment (IcedTea7 2.3.7) (7u15-2.3.7-0ubuntu1~12.04.1)
OpenJDK Client VM (build 23.7-b01, mixed mode, sharing)
$ java -cp clojure-1.5.0.jar:. Main
Exception in thread "main" java.lang.ExceptionInInitializerError
at clojure.lang.Compiler.<clinit>(Compiler.java:47)
at Main.main(Main.java:16)
Caused by: java.lang.NullPointerException
at clojure.lang.RT.baseLoader(RT.java:2043)
at clojure.lang.RT.load(RT.java:417)
at clojure.lang.RT.load(RT.java:411)
at clojure.lang.RT.doInit(RT.java:447)
at clojure.lang.RT.<clinit>(RT.java:329)
... 2 more
$ java -cp clojure-1.4.0.jar:. Main
Hi there
#'user/a
3
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