package default-jre-headless 1:1.6-43ubuntu2 failed to install/upgrade: trying to overwrite '/usr/lib/jvm/java-1.6.0-openjdk', which is also in package openjdk-6-jre-headless 6b24-1.11.5-0ubuntu1~11.10.1

i was trien to upgrade den all those erors started comin,dono the problem,am new to ubuntu

ProblemType: Package
DistroRelease: Ubuntu 12.04
Package: default-jre-headless 1:1.6-43ubuntu2
ProcVersionSignature: Ubuntu 3.0.0-12.20-generic 3.0.4
Uname: Linux 3.0.0-12-generic x86_64
ApportVersion: 2.0.1-0ubuntu15
Architecture: amd64
Date: Sat Dec 1 14:18:05 2012
DuplicateSignature:
 Unpacking replacement default-jre-headless ...
 dpkg: error processing /var/cache/apt/archives/default-jre-headless_1%3a1.6-43ubuntu2_amd64.deb (--unpack):
  trying to overwrite '/usr/lib/jvm/java-1.6.0-openjdk', which is also in package openjdk-6-jre-headless 6b24-1.11.5-0ubuntu1~11.10.1
ErrorMessage: trying to overwrite '/usr/lib/jvm/java-1.6.0-openjdk', which is also in package openjdk-6-jre-headless 6b24-1.11.5-0ubuntu1~11.10.1
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
MarkForUpload: True
SourcePackage: java-common
Title: package default-jre-headless 1:1.6-43ubuntu2 failed to install/upgrade: trying to overwrite '/usr/lib/jvm/java-1.6.0-openjdk', which is also in package openjdk-6-jre-headless 6b24-1.11.5-0ubuntu1~11.10.1
UpgradeStatus: Upgraded to precise on 2012-12-01 (0 days ago)