- Removed unnecessary variables
- Made static nested class HttpResponse immutable
- Removed redundant paranthesis
- Flipped equals() method in if conditions to avoid NPE
- defined constants for duplicate parameters string param names
- Replaced StringBuffer with StringBuilder
- Using contains instead of indexOf for string checks
- renamed some variables to comply with java style guide
https://sonar.onap.org/dashboard/index?id=org.onap.appc%3Aappc-config-adaptor-provider%3Asrc%2Fmain%2Fjava%2Forg%2Fonap%2Fappc%2Fccadaptor%2FConfigComponentAdaptor.java