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POJava compiler level does not match
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  1. POJava compiler level does not match
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    copied!<p>i am using jsf2 hibernate 4.1.4, spring 3.1 and maven 3 in eclipse helios. but i have this error when i try to add dependecy in to POM.</p> <pre><code>Java compiler level does not match the version of the installed Java project facet. </code></pre> <p>what does it mean? how can i solve this error? </p> <p>also i have this warning:</p> <pre><code>Build path specifies execution environment J2SE-1.5. There are no JREs installed in the workspace that are strictly compatible with this environment. </code></pre> <p>my POM:</p> <pre><code>&lt;project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"&gt; &lt;modelVersion&gt;4.0.0&lt;/modelVersion&gt; &lt;groupId&gt;com.integrate&lt;/groupId&gt; &lt;artifactId&gt;integrate&lt;/artifactId&gt; &lt;version&gt;0.0.1-SNAPSHOT&lt;/version&gt; &lt;name&gt;integrate&lt;/name&gt; &lt;dependencyManagement&gt; &lt;dependencies&gt; &lt;/dependencies&gt; &lt;/dependencyManagement&gt; &lt;properties&gt; &lt;spring.version&gt;3.1.0.RELEASE&lt;/spring.version&gt; &lt;/properties&gt; &lt;dependencies&gt; &lt;!-- Spring 3 dependencies --&gt; &lt;dependency&gt; &lt;groupId&gt;org.springframework&lt;/groupId&gt; &lt;artifactId&gt;spring-core&lt;/artifactId&gt; &lt;version&gt;${spring.version}&lt;/version&gt; &lt;/dependency&gt; &lt;dependency&gt; &lt;groupId&gt;org.springframework&lt;/groupId&gt; &lt;artifactId&gt;spring-context&lt;/artifactId&gt; &lt;version&gt;${spring.version}&lt;/version&gt; &lt;/dependency&gt; &lt;dependency&gt; &lt;groupId&gt;org.springframework&lt;/groupId&gt; &lt;artifactId&gt;spring-web&lt;/artifactId&gt; &lt;version&gt;${spring.version}&lt;/version&gt; &lt;/dependency&gt; &lt;dependency&gt; &lt;groupId&gt;org.springframework&lt;/groupId&gt; &lt;artifactId&gt;spring-tx&lt;/artifactId&gt; &lt;version&gt;${spring.version}&lt;/version&gt; &lt;/dependency&gt; &lt;dependency&gt; &lt;groupId&gt;org.springframework&lt;/groupId&gt; &lt;artifactId&gt;spring-orm&lt;/artifactId&gt; &lt;version&gt;${spring.version}&lt;/version&gt; &lt;/dependency&gt; &lt;dependency&gt; &lt;groupId&gt;org.springframework&lt;/groupId&gt; &lt;artifactId&gt;spring-test&lt;/artifactId&gt; &lt;version&gt;${spring.version}&lt;/version&gt; &lt;/dependency&gt; &lt;!-- JSF dependencies --&gt; &lt;dependency&gt; &lt;groupId&gt;com.sun.faces&lt;/groupId&gt; &lt;artifactId&gt;jsf-api&lt;/artifactId&gt; &lt;version&gt;2.1.6&lt;/version&gt; &lt;/dependency&gt; &lt;dependency&gt; &lt;groupId&gt;com.sun.faces&lt;/groupId&gt; &lt;artifactId&gt;jsf-impl&lt;/artifactId&gt; &lt;version&gt;2.1.6&lt;/version&gt; &lt;/dependency&gt; &lt;dependency&gt; &lt;groupId&gt;javax.servlet&lt;/groupId&gt; &lt;artifactId&gt;jstl&lt;/artifactId&gt; &lt;version&gt;1.2&lt;/version&gt; &lt;/dependency&gt; &lt;!-- Hibernate dependencies --&gt; &lt;dependency&gt; &lt;groupId&gt;org.hibernate&lt;/groupId&gt; &lt;artifactId&gt;hibernate-core&lt;/artifactId&gt; &lt;version&gt;4.1.4.Final&lt;/version&gt; &lt;/dependency&gt; &lt;dependency&gt; &lt;groupId&gt;javassist&lt;/groupId&gt; &lt;artifactId&gt;javassist&lt;/artifactId&gt; &lt;version&gt;3.12.1.GA&lt;/version&gt; &lt;/dependency&gt; &lt;!-- oracle Connector dependency --&gt; &lt;dependency&gt; &lt;groupId&gt;com.oracle&lt;/groupId&gt; &lt;artifactId&gt;ojdbc6&lt;/artifactId&gt; &lt;version&gt;11.2.0.3&lt;/version&gt; &lt;/dependency&gt; &lt;!-- c3p0 dependency --&gt; &lt;dependency&gt; &lt;groupId&gt;c3p0&lt;/groupId&gt; &lt;artifactId&gt;c3p0&lt;/artifactId&gt; &lt;version&gt;0.9.1.2&lt;/version&gt; &lt;/dependency&gt; &lt;/dependencies&gt; </code></pre> <p>the pic: <img src="https://i.stack.imgur.com/doTGY.jpg" alt="enter image description here"></p>
 

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