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[O] Reporting org-babel bug for java

From: santorini lysias
Subject: [O] Reporting org-babel bug for java
Date: Thu, 30 Mar 2017 18:27:53 -0700


I've never used a mailing list before, so bear with me if I'm not "doing this right."

I found behavior that I think is a bug and not a feature. This is for org-babel Java.

The content below the equals signs, below, comprise an org-mode file that I will refer to in order to report the behavior that is the topic of this post. Two Java jars are referenced in the classpaths and are needed in order to run the code. They can be obtained from the Junit download page.

This code basically runs a Junit test. The concern I have is with this line:

#+begin_src java :classname ParameterizedTest :cmpflag "-cp ~/Linux/rep/junit-4.12.jar:~/Linux/rep/hamcrest-core-1.3.jar:." :cmdline "-cp ~/Linux/rep/junit-4.12.jar:~/Linux/rep/hamcrest-core-1.3.jar:."

If I press C-c C-c on this block of code, it runs fine. However, if the string after :cmpflag is written as "-cp .:~/Linux/rep/junit-4.12.jar:~/Linux/rep/hamcrest-core-1.3.jar" the compilation of this Java class will fail because the Junit jar cannot be located!

This only happens because I change the order of the jars as they appear in the classpath. This is not a Java problem, since the order of items in the classpath should not change Java behavior. I have to conclude there is something happening in the org-babel code that is causing this.

Org-mode file below
* calculator
#+begin_src java :classname Calculator :cmpflag "-cp ." :cmdline "-cp ."
public class Calculator{
  public double add(double number1, double number2){
    return number1+number2;
* parameterized test
#+begin_src java :classname ParameterizedTest :cmpflag "-cp ~/Linux/rep/junit-4.12.jar:~/Linux/rep/hamcrest-core-1.3.jar:." :cmdline "-cp ~/Linux/rep/junit-4.12.jar:~/Linux/rep/hamcrest-core-1.3.jar:."
import static org.junit.Assert.*;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.Parameterized;
import org.junit.runners.Parameterized.Parameters;
import java.util.Arrays;
import java.util.Collection;

public class ParameterizedTest{
  private double expected;
  private double valueOne;
  private double valueTwo;

  public static Collection<Integer[]> getTestParameters(){
    return Arrays.asList(new Integer[][]{
    {2, 1, 1},
    {3, 2, 1},
    {4, 3, 1},

  public ParameterizedTest(double expected, double valueOne, double valueTwo){
    this.expected = expected;
    this.valueOne = valueOne;
    this.valueTwo = valueTwo;

  public void sum(){
    Calculator calc = new Calculator();
    assertEquals(expected, calc.add(valueOne, valueTwo), 0);
* run test
#+begin_src sh :results verbatim
java -cp .:/home/ahan/Linux/rep/junit-4.12.jar:/home/ahan/Linux/rep/hamcrest-core-1.3.jar: org.junit.runner.JUnitCore ParameterizedTest

: JUnit version 4.12
: ...
: Time: 0.007
: OK (3 tests)

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