what is already installed?
Android DDMS10.0.0.v201102162101-104271com.android.ide.eclipse.ddms.feature.group Android Development Tools10.0.0.v201102162101-104271com.android.ide.eclipse.adt.feature.group Android Hierarchy Viewer10.0.0.v201102162101-104271com.android.ide.eclipse.hierarchyviewer.feature.group Android Traceview10.0.0.v201102162101-104271com.android.ide.eclipse.traceview.feature.group C/C++ Code Analysis Framework (Codan)1.0.0.201006141710org.eclipse.cdt.codan.feature.feature.group C/C++ Debugger Services Framework (DSF) Examples2.1.0.201006141710org.eclipse.cdt.examples.dsf.feature.group C/C++ Development Platform7.0.0.201006141710org.eclipse.cdt.platform.feature.group C/C++ Development Tools7.0.0.201006141710org.eclipse.cdt.feature.group C/C++ Development Tools SDK7.0.0.201006141710org.eclipse.cdt.sdk.feature.group C/C++ DSF GDB Debugger Integration2.1.0.201006141710org.eclipse.cdt.gnu.dsf.feature.group C/C++ GCC Cross Compiler Support1.0.0.201006141710org.eclipse.cdt.build.crossgcc.feature.group C/C++ GDB Hardware Debugging7.0.0.201006141710org.eclipse.cdt.debug.gdbjtag.feature.group C/C++ GNU Toolchain Build Support7.0.0.201006141710org.eclipse.cdt.gnu.build.feature.group C/C++ GNU Toolchain Debug Support6.1.0.201006141710org.eclipse.cdt.gnu.debug.feature.group C/C++ Memory View Enhancements2.1.0.201006141710org.eclipse.cdt.debug.ui.memory.feature.group C/C++ Remote Launch6.0.0.201006141710org.eclipse.cdt.launch.remote.feature.group C99 LR Parser5.1.0.201006141710org.eclipse.cdt.core.lrparser.feature.feature.group C99 LR Parser SDK5.1.0.201006141710org.eclipse.cdt.core.lrparser.sdk.feature.group CDT Tests7.0.0.201006141710org.eclipse.cdt.testing.feature.group DBG Debug Feature1.2.3.200910091456PRDnet.sourceforge.phpeclipse.debug.feature.feature.group EclEmma Java Code Coverage1.5.1com.mountainminds.eclemma.feature.feature.group Eclipse Debugger for C/C++1.0.0.201006141710org.eclipse.cdt.debug.edc.feature.group Eclipse IDE for Java EE Developers1.3.1.20100916-1202epp.package.jee EclipseME1.7.9eclipseme.feature.feature.group ExploreFS Feature1.0.0biz.junginger.ExploreFS_Feature.feature.group FindBugs Feature2.0.0.20110405edu.umd.cs.findbugs.plugin.eclipse.feature.group JavaHL 1.6.12 Win32 Binaries (Optional)2.2.2.I20101203-1700org.polarion.eclipse.team.svn.connector.javahl16.win32.feature.group JDT Decompiler Feature3.4.0.v20090220net.sf.jdtdecompiler.feature.feature.group JSEclipse1.5.5com.interaktonline.jseclipse.feature.group Miscellaneous C/C++ Utilities5.1.0.201006141710org.eclipse.cdt.util.feature.group Native JavaHL 1.6 Implementation (Optional)2.2.2.I20110321-1700org.polarion.eclipse.team.svn.connector.javahl16.feature.group P2 C/C++ Toolchain Installer1.0.0.201006141710org.eclipse.cdt.p2.feature.group PHPeclipse1.2.3.200910091456PRDnet.sourceforge.phpeclipse.feature.feature.group RegexUtil Featch1.2.4com.ess.regexutil.feature.group Spket IDE1.6.18com.spket.ui.feature.group Spket Text Editor1.6.18com.spket.sted.feature.group Spring IDE AOP Extension (optional)2.7.1.201107082359-RELEASEorg.springframework.ide.eclipse.aop.feature.feature.group Spring IDE Autowire Extension (optional)2.7.1.201107082359-RELEASEorg.springframework.ide.eclipse.autowire.feature.feature.group Spring IDE Batch Extension (optional)2.7.1.201107082359-RELEASEorg.springframework.ide.eclipse.batch.feature.feature.group Spring IDE Core (required)2.7.1.201107082359-RELEASEorg.springframework.ide.eclipse.feature.feature.group Spring IDE Integration, Flex and Web Services Extension (optional)2.7.1.201107082359-RELEASEorg.springframework.ide.eclipse.integration.feature.feature.group Spring IDE OSGi Extension (optional)2.7.1.201107082359-RELEASEorg.springframework.ide.eclipse.osgi.feature.feature.group Spring IDE Security Extension (optional)2.7.1.201107082359-RELEASEorg.springframework.ide.eclipse.security.feature.feature.group Spring IDE Security Extension Developer Resources2.6.0.201103160035-RELEASEorg.springframework.ide.eclipse.security.feature.source.feature.group Spring IDE Web Flow Extension (optional)2.7.1.201107082359-RELEASEorg.springframework.ide.eclipse.webflow.feature.feature.group Spring IDE Web Flow Extension Developer Resources2.6.0.201103160035-RELEASEorg.springframework.ide.eclipse.webflow.feature.source.feature.group Subversive Revision Graph (Optional) (Incubation)0.7.9.I20110318-1700org.eclipse.team.svn.revision.graph.feature.group Subversive SVN Connectors2.2.2.I20110318-1700org.polarion.eclipse.team.svn.connector.feature.group Subversive SVN JDT Ignore Extensions (Optional) (Incubation)0.7.9.I20101203-1700org.eclipse.team.svn.resource.ignore.rules.jdt.feature.group Subversive SVN Team Provider (Incubation)0.7.9.I20110321-1700org.eclipse.team.svn.feature.group Subversive SVN Team Provider Localization (Optional) (Incubation)0.7.9.I20110318-1700org.eclipse.team.svn.nl1.feature.group SVNKit 1.3.5 Implementation (Optional)2.2.2.I20110321-1700org.polarion.eclipse.team.svn.connector.svnkit16.feature.group Unified Parallel C Berkeley UPC Toolchain Support1.0.3.201006141710org.eclipse.cdt.bupc.feature.group Unified Parallel C Support5.1.0.201006141710org.eclipse.cdt.core.parser.upc.feature.feature.group Unified Parallel C Support SDK5.1.0.201006141710org.eclipse.cdt.core.parser.upc.sdk.feature.group UniMod - Executable UML for Eclipse1.3.39com.evelopers.unimod.feature.group Xdebug Feature1.2.3.200910091456PRDnet.sourceforge.phpeclipse.xdebug.feature.feature.group Xerces for Spket IDE2.8.0com.spket.xml.external.feature.group XL C/C++ Compiler Support6.1.0.201006141710org.eclipse.cdt.xlc.feature.feature.group XL C/C++ Compiler Support SDK6.1.0.201006141710org.eclipse.cdt.xlc.sdk.feature.group