ENH: add some java code to try and find the system path

Tests/Java/CMakeCheckJavaPath.java

@@ -0,0 +1,8 @@
+class CMakeCheckJavaPath
+{  
+    public static void main(String args[])
+    {
+        System.out.println(System.getProperty("sun.boot.class.path", "(none)"));
+    }
+}
+

Tests/Java/CMakeLists.txt

@@ -2,6 +2,14 @@ PROJECT(hello Java)
 SET(CMAKE_VERBOSE_MAKEFILE 1)
 SET(OLD_CUSTOM_COMMAND_WAY )
 IF(NOT OLD_CUSTOM_COMMAND_WAY)
+  CONFIGURE_FILE(${hello_SOURCE_DIR}/CMakeCheckJavaPath.java
+    ${hello_BINARY_DIR}/CMakeCheckJavaPath.java IMMEDIATE)
+  EXEC_PROGRAM(${CMAKE_Java_COMPILER} ${hello_BINARY_DIR}
+    ARGS CMakeCheckJavaPath.java)
+  EXEC_PROGRAM(${CMAKE_Java_RUNTIME} ${hello_BINARY_DIR}
+    ARGS CMakeCheckJavaPath OUTPUT_VARIABLE OUT)
+  INCLUDE_DIRECTORIES(${hello_SOURCE_DIR} ${OUT}
+    ${hello_BINARY_DIR} )
   ADD_LIBRARY(hello A.java HelloWorld.java)
 ENDIF(NOT OLD_CUSTOM_COMMAND_WAY)