3 major changes (#716)

* made changes to java reflection

* removed redundant method makeSound in Animal abstract class

* added project for play-framework article

* added project for regex

* changed regex project from own model to core-java

* added project for routing in play

* made changes to regex project

* refactored code for REST API with Play project

core-java/src/main/java/com/baeldung/java/regex/Result.java

@@ -1,27 +0,0 @@
-package com.baeldung.java.regex;
-
-public class Result {
-    private boolean found = false;
-    private int count = 0;
-
-    public Result() {
-
-    }
-
-    public boolean isFound() {
-        return found;
-    }
-
-    public void setFound(boolean found) {
-        this.found = found;
-    }
-
-    public int getCount() {
-        return count;
-    }
-
-    public void setCount(int count) {
-        this.count = count;
-    }
-
-}