Workspace defines a VM that does not contain a valid jre/lib/rt.jar: C:\Program Files\Java\jre7
===

i get following error when i run `mvn eclipse:eclipse` command. 


    [WARNING] Workspace defines a VM that does not contain a valid jre/lib/rt.jar: C:\Program Files\Java\jre7
    [WARNING] could not read workspace project:c:\Users\Acer\workspace\.metadata\.plugins\org.eclipse.core.resources\.projects\myproject
    org.codehaus.plexus.util.xml.pull.XmlPullParserException: processing instruction can not have PITarget with reserveld xml name (position: START_D
    OCUMENT seen \r\n<?xml ... @2:7)
            at org.codehaus.plexus.util.xml.pull.MXParser.parsePI(MXParser.java:2453)
            at org.codehaus.plexus.util.xml.pull.MXParser.parseProlog(MXParser.java:1447)
            at org.codehaus.plexus.util.xml.pull.MXParser.nextImpl(MXParser.java:1395)
            at org.codehaus.plexus.util.xml.pull.MXParser.next(MXParser.java:1093)
            at org.codehaus.plexus.util.xml.Xpp3DomBuilder.build(Xpp3DomBuilder.java:187)
            at org.codehaus.plexus.util.xml.Xpp3DomBuilder.build(Xpp3DomBuilder.java:83)
            at org.codehaus.plexus.util.xml.Xpp3DomBuilder.build(Xpp3DomBuilder.java:48)
            at org.apache.maven.plugin.eclipse.reader.ReadWorkspaceLocations.readArtefact(ReadWorkspaceLocations.java:341)
            at org.apache.maven.plugin.eclipse.reader.ReadWorkspaceLocations.readWorkspace(ReadWorkspaceLocations.java:536)
            at org.apache.maven.plugin.eclipse.reader.ReadWorkspaceLocations.init(ReadWorkspaceLocations.java:94)
            at org.apache.maven.plugin.eclipse.EclipsePlugin.getWorkspaceConfiguration(EclipsePlugin.java:2063)
            at org.apache.maven.plugin.eclipse.EclipsePlugin.fillDefaultClasspathContainers(EclipsePlugin.java:1580)
            at org.apache.maven.plugin.eclipse.EclipsePlugin.setup(EclipsePlugin.java:978)
            at org.apache.maven.plugin.ide.AbstractIdeSupportMojo.execute(AbstractIdeSupportMojo.java:500)
            at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:101)
            at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:209)
            at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153)
            at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145)
            at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:84)
            at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:59)
            at org.apache.maven.lifecycle.internal.LifecycleStarter.singleThreadedBuild(LifecycleStarter.java:183)
            at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:161)
            at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:320)
            at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:156)
            at org.apache.maven.cli.MavenCli.execute(MavenCli.java:537)
            at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:196)
            at org.apache.maven.cli.MavenCli.main(MavenCli.java:141)
            at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
            at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
            at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
            at java.lang.reflect.Method.invoke(Method.java:601)
            at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:290)
            at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:230)
            at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:409)
            at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:352)
    [INFO] no substring wtp server match.

this is my [pom.xml][1]

could anybody tell me what i am doing wrong here
  [1]: http://pastebin.com/KEiNw2e5