Merge branch 'features/Exception-Handling' into 'develop'

Features/exception handling

See merge request !24

Exception-Handling/src/customclass/com/CustomException.java

+package customclass.com;
+
+class CustomException extends  Exception {
+    String str;
+    CustomException(String str){
+        this.str=str;
+    }
+    public String toString(){
+        return ("Message " + str );
+    }
+}
\ No newline at end of file

Exception-Handling/src/customclass/com/UserDefined.java

+package customclass.com;
+public class UserDefined {
+    static void validation(String name) throws CustomException{
+
+        if (name == null){
+            throw new CustomException(": Access Denied Due To Username or Password-----> Check Username & Password");
+        } else {
+            System.out.println("-------- You Have Successfully Logined-----------");
+        }
+    }
+    public static void main(String [] args){
+        try {
+            validation(null);
+        }
+        catch (CustomException e){
+
+            System.out.println( e);
+        }
+        System.out.println("\n------------Custom-Exception---------------");
+    }
+
+}