Added PasswordMatch, which is used for making sure change to account feature is authorized while not violating the privacy aspect.

Author: parmism

src/main/java/User.java

@@ -20,6 +20,10 @@ private String getPassword(){
         return this.password;
     }
 
+    public Boolean PasswordMatch(String attempt){
+        return (this.getPassword().equals(attempt));
+    }
+
     @Override
 //    from Changeable
     public void changeFeature(String feature, String newFeature){