CODEWITHSUNDEEP
javaeclipsescala
030
030

Reputation: 11719

Error occurs while calling Scala code in Java in Eclipse

I would like to call the following Scala code in Java:

Scala code

package calculate

import java.io._

class CalculationScala

object CalculationScala {
  def main(args: Array[String]) {
    def operate(a: Double, b: Double, op: (Double, Double) => Double): Double = (op(a, b))
    println(operate(5, 15, _-_))
  }
}

Java code

package calculate;

public class Calculation {
    public static void main(String[] args) {
        CalculationScala calculationScala = new CalculationScala();
        calculationScala.main(args);
    }
}

but the following error occurs.

Error

Exception in thread "main" java.lang.NoClassDefFoundError: scala/Function2
    at calculate.CalculationScala.main(CalculationScala.scala)
    at calculate.Calculation.main(Calculation.java:79)
Caused by: java.lang.ClassNotFoundException: scala.Function2
    at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
    ... 2 more

How to solve this issue?

Upvotes: 2

Views: 736

Answers (1)

Christian
Christian

Reputation: 4593

It looks like you are missing scala-library.jar on your runtime classpath.

Upvotes: 2

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