HTTP API deprected warnings UTF_8, Scheme, ThreadSafeClientConnManager

I'm new java. I created a java project to call my webservice(Servlet,Tomcat6.0).
To use http i had added the following jar files
1. httpclient-4.2.1
2. httpcore-4.2.1

For methods(In Bold) below i'm getting type deprecated warnings and not able to run the project.

HTTP.**UTF_8**
aSchemeRegistryL.register(new **Scheme**("http", PlainSocketFactory.getSocketFactory(), 80));
ClientConnectionManager ccm = new **ThreadSafeClientConnManager**(aHttpParamsL, aSchemeRegistryL);    

Help me to rectify it.