Adding source code for the tutorial tracked under BAEL-2759 (#6533)

tensorflow-java/src/main/python/tensorflowGraph.py

@@ -0,0 +1,16 @@
+import tensorflow as tf
+graph = tf.Graph()
+builder = tf.saved_model.builder.SavedModelBuilder('./model')
+writer = tf.summary.FileWriter('.')
+with graph.as_default():
+  a = tf.constant(2, name='a')
+  b = tf.constant(3, name='b')
+  x = tf.placeholder(tf.int32, name='x')
+  y = tf.placeholder(tf.int32, name='y')
+  z = tf.math.add(a*x, b*y, name='z')
+  writer.add_graph(tf.get_default_graph())
+  writer.flush()
+  sess = tf.Session()
+  sess.run(z, feed_dict = {x: 2, y: 3})
+  builder.add_meta_graph_and_variables(sess, [tf.saved_model.tag_constants.SERVING])
+  builder.save()