Dynamic Web Module 3.1 requires Java 1.7 or newer in Eclipse



Have you noticed above type of error in yourEclipse? When you’re creating a project with Dynamic Web Module 3.1 support, you should be using Java 1.7 or newer. Please follow below steps to resolve it.

Step1: Make sure your Java Project is configured probably to use Java 1.7.

Right click your project > Properties > Java Compiler and set “Compiler compliance level” to 1.7

Step2: Java Build Path. Click “Edit“. And change it to “Java 7″

Step3: Next from the menu on the left select Project Facets > Java and set its version to 1.7

Extra Tips: If you have maven project try adding below code topom.xml file.

pom.xml

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< build >      < plugins >          < plugin >          < groupId > org . apache . maven . plugins < / groupId >          < artifactId > maven - compiler - plugin < / artifactId >          < version > 3.1 < / version >          < configuration >              < source > 1.7 < / source >              < target > 1.7 < / target >          < / configuration >      < / plugin >      < / plugins > < / build >

Alternate Solution:

1. Another way is to edit the project facet configuration file itself: org.eclipse.wst.common.project.facet.core.xml
2. Change the dynamic web module version in this line to 3.1 – <installed facet="jst.web" version="3.0"/>
3. And then Maven -> Update Project. You’ll find this file in the .settings directory within the Eclipse project.

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