Dynamic invocation of javac with custom class path.

Question

To all the Java Gurus out there,
Consider the following classes:
XYZ/test/TestUtil.java
package test;
class TestUtil {
  void useMe() {
}ABC/test/Test.java
package test;
public class Test {
  public static void main(String[] args) {
    TestUtil t = new TestUtil();
     t.useMe();
}The class Test uses package private access to the TestUtil.useMe() method. Then the Test class is packaged into test.jar and the TestUtil class is packaged into testutil.jar.
Our application uses a custom class loader architecture where the test.jar is loaded by class loader "X" and testutil.jar is loaded by class loader "Y". Also Y is the parent class loader of X. When the main() of Test class is run it results into IllegalAccessException as the package private method is being accessed from different class loaders.
We are currently using a dynamic way to detect the dependency between test.jar and testutil.jar and generating the classpath argument to the "javac" ant task which dyncamically invokes the sun.tools.javac.Main class. So while compiling Test class the following command line is generated:
javac -classpath XYZ/testutil.jar Test.java
It compiles fine assuming that the Test class and the TestUtil class are loaded by the same class loader but at runtime this fails.
Is there a way to make "javac" use our runtime class loader architecture to instead of static classpath, so that the access violation is captured at compile time?
Any help is appreciated.
Ravi
PS: If this is not the right forum please point me to the right place to post this questions.

Answer 1

Not that I'm aware of - the Java Language is designed to be platform-independent so absolute file paths which is a specific feature of various file systems would naturally not to be mixed up with the object-oriented hierarchy structure.
Just like a compiler wouldn't check if a file exists in
new File("<FilePath>")I don't think you can get compile-time checks for what you have wanted.
Hope this helps~
Alex Lam S.L.