title: Eclipse project unable to run/show errors although it has no errors in codes
body: <p>I am trying to run my android project. I've checked the files individually but it shows no error in any file. But still unable to run and it shows <code>Your project contains error(s), please fix them before running your application</code></p>
  
  <p>I've checked online and rebuild the project/ clean the project but it still shows me the error. </p>
  
  <p>Here is the error log.</p>
  
  <pre><code>eclipse.buildId=M20120208-0800
  java.version=1.7.0_04
  java.vendor=Oracle Corporation
  BootLoader constants: OS=win32, ARCH=x86_64, WS=win32, NL=en_SG
  Command-line arguments:  -os win32 -ws win32 -arch x86_64
  Error
  Sun Aug 05 23:01:23 SGT 2012
  JavaBuilder handling ImageBuilderInternalException while building: NFCTest
  org.eclipse.core.internal.resources.ResourceException: A resource exists with a
  different case: '/NFCTest/bin/classes/com/example/NFCTest'.
  at org.eclipse.core.internal.resources.Resource.checkDoesNotExist(Resource.java:308)
  at org.eclipse.core.internal.resources.Resource.checkDoesNotExist(Resource.java:286)
  at org.eclipse.core.internal.resources.Folder.assertCreateRequirements(Folder.java:30)
  at org.eclipse.core.internal.resources.Folder.create(Folder.java:95)
  at org.eclipse.jdt.internal.core.builder.AbstractImageBuilder.createFolder(AbstractImageBuilder.java:469)
  at org.eclipse.jdt.internal.core.builder.AbstractImageBuilder$1.visit(AbstractImageBuilder.java:253)
  at org.eclipse.core.internal.resources.Resource$1.visitElement(Resource.java:65)
  at org.eclipse.core.internal.watson.ElementTreeIterator.doIteration(ElementTreeIterator.java:82)
  at org.eclipse.core.internal.watson.ElementTreeIterator.doIteration(ElementTreeIterator.java:86)
  at org.eclipse.core.internal.watson.ElementTreeIterator.doIteration(ElementTreeIterator.java:86)
  at org.eclipse.core.internal.watson.ElementTreeIterator.doIteration(ElementTreeIterator.java:86)
  at org.eclipse.core.internal.watson.ElementTreeIterator.iterate(ElementTreeIterator.java:127)
  at org.eclipse.core.internal.resources.Resource.accept(Resource.java:75)
  at org.eclipse.jdt.internal.core.builder.AbstractImageBuilder.addAllSourceFiles(AbstractImageBuilder.java:218)
  at org.eclipse.jdt.internal.core.builder.BatchImageBuilder.build(BatchImageBuilder.java:51)
  at org.eclipse.jdt.internal.core.builder.JavaBuilder.buildAll(JavaBuilder.java:254)
  at org.eclipse.jdt.internal.core.builder.JavaBuilder.build(JavaBuilder.java:178)
  at org.eclipse.core.internal.events.BuildManager$2.run(BuildManager.java:728)
  at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
  at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:199)
  at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:239)
  at org.eclipse.core.internal.events.BuildManager$1.run(BuildManager.java:292)
  at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
  at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:295)
  at org.eclipse.core.internal.events.BuildManager.basicBuildLoop(BuildManager.java:351)
  at org.eclipse.core.internal.events.BuildManager.build(BuildManager.java:374)
  at org.eclipse.core.internal.events.AutoBuildJob.doBuild(AutoBuildJob.java:143)
  at org.eclipse.core.internal.events.AutoBuildJob.run(AutoBuildJob.java:241)
  at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)
  </code></pre>