1. When I run my pom.xml the first step that happens is building and creating the final .war file.
2. Then there are 2 plugins which I require to create a .html file runs afterwards.
3. Can copy the resource to target/PROJECT folder.
I need to update the .war file created in step 1 with the .html file created in step 2.
So far I am able to copy the .html file in project's target/PROJECT folder with maven-resources-plugin's copy-resources goal. But my final requirement is still pending.
Thank you for your suggestion Rob and Knute. It suddenly started working after I changed the phase from 'package' to 'compile' in all my plugins.
Now first files are compiled then with the plugins are running with which .html is generated and copied to target/PROJECT sequentially and at last the .war is being created out of that target/PROJECT folder. So I am good now.