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Maven Integration for Eclipse is a really straight forward task through Eclipse Marketplace with the m2e maven eclipse plugin.
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01. Open Eclipse and go to Help -> Eclipse MarketPlace
02. In Marketplace, search for "Maven"
03. Click install in Maven Integration for Eclipse, m2e plugin
04. Confirm and proceed with the installation to complete.
05. Restart Eclipse completing the installation.
References
01. http://www.eclipse.org/m2e/
02. https://marketplace.eclipse.org/content/maven-integration-eclipse-luna-and-newer
03. https://stackoverflow.com/questions/21815087/downloading-maven-eclipse-plugin-m2e-plugin