DocumentBuilderFactory doesn't have setFeature in JDK 1.8.0_121?

Question

While parsing the XML files my documentbuilder was looking for the DTD and sometimes it use to throw error (server crashes). So when I googled I got the following solution from here Ignoring the DTD while parsing XML (the solution which I used is with VOTE---90). Letter in my IDE show the following error.

The method setFeature(String, boolean) is undefined for the type DocumentBuilderFactory

Then I thought its the problem with my maven version then I found the following link.

What is the jar file I should download and from where?

Which says its inbuilt in JDK so that the IDE itself will suggest me the imports.

My JDK version is

java version "1.8.0_121" Java(TM) SE Runtime Environment (build 1.8.0_121-b13) Java HotSpot(TM) 64-Bit Server VM (build 25.121-b13, mixed mode)

The code in class from jar file

Answer 1

The answer to the following questing fixed this for me.

Node.getTextContent() is undefined in Node

Basically, you need to move JRE library to the top of your dependencies in eclipse.