BAEL-634 javassist (#1349)

* BEEL-634 javassist dependency

* BEEL-634 code for javassist article

* BEEL-634 test refinement

* BEEL-634 increment lib to newest version

* add test that uses reflection to verify

* add field

* add bytecode to different class

libraries/src/main/java/com/baeldung/javasisst/Point.java

@@ -0,0 +1,17 @@
+package com.baeldung.javasisst;
+
+
+public class Point {
+    public int x = 0;
+    public int y = 0;
+
+    public Point(int x, int y) {
+        this.x = x;
+        this.y = y;
+    }
+
+    public void move(int x, int y) {
+        this.x = x;
+        this.y = y;
+    }
+}

libraries/src/main/java/com/baeldung/javasisst/ThreeDimensionalPoint.java

@@ -0,0 +1,19 @@
+package com.baeldung.javasisst;
+
+
+public class ThreeDimensionalPoint {
+    public int x = 0;
+    public int y = 0;
+    public int z = 0;
+
+    public ThreeDimensionalPoint(int x, int y, int z) {
+        this.x = x;
+        this.y = y;
+        this.z = z;
+    }
+
+    public void move(int x, int y) {
+        this.x = x;
+        this.y = y;
+    }
+}