ENH: major changes to support addition of languages from cmake modules directory.

Tests/Java/A.java

@@ -0,0 +1,11 @@
+class A
+{
+  public A() 
+    {
+    }
+  
+  public void printName()
+    { 
+      System.out.println("A");
+    }
+}

Tests/Java/CMakeLists.txt

@@ -0,0 +1,29 @@
+PROJECT(hello Java)
+SET(OLD_CUSTOM_COMMAND_WAY )
+IF(NOT OLD_CUSTOM_COMMAND_WAY)
+  INCLUDE_DIRECTORIES(${hello_SOURCE_DIR})
+  INCLUDE_DIRECTORIES(${hello_BINARY_DIR})
+  ADD_LIBRARY(hello A.java HelloWorld.java)
+ENDIF(NOT OLD_CUSTOM_COMMAND_WAY)
+
+
+IF(OLD_CUSTOM_COMMAND_WAY)
+  ADD_CUSTOM_COMMAND(
+    OUTPUT ${hello_BINARY_DIR}/A.class
+    MAIN_DEPENDENCY ${hello_SOURCE_DIR}/A.java
+    COMMAND ${CMAKE_Java_COMPILER} ARGS -d ${hello_BINARY_DIR} ${hello_SOURCE_DIR}/A.java)
+  ADD_CUSTOM_COMMAND(
+    OUTPUT ${hello_BINARY_DIR}/HelloWorld.class
+    MAIN_DEPENDENCY ${hello_SOURCE_DIR}/HelloWorld.java
+    COMMAND ${CMAKE_Java_COMPILER} ARGS -d ${hello_BINARY_DIR} ${hello_SOURCE_DIR}/HelloWorld.java)
+  
+  ADD_CUSTOM_TARGET(foo.jar ALL 
+    DEPENDS ${hello_BINARY_DIR}/A.class ${hello_BINARY_DIR}/HelloWorld.class)
+  
+  ADD_CUSTOM_COMMAND( TARGET foo.jar
+    PRE_BUILD
+    COMMAND ${CMAKE_COMMAND}
+    ARGS -E chdir ${CMAKE_CURRENT_BINARY_DIR}
+    ${CMAKE_Java_ARCHIVE}
+    -cvf foo.jar *.class)
+ENDIF(OLD_CUSTOM_COMMAND_WAY)

Tests/Java/HelloWorld.java

@@ -0,0 +1,11 @@
+class HelloWorld
+{  
+    public static void main(String args[])
+    {
+        A a;
+        a = new A();
+        a.printName();
+        System.out.println("Hello World!");
+    }
+}
+