dpkg error when installing JDK7 on Ubuntu12.04 [closed]

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Error message from terminal:

Download done. sha256sum mismatch jdk-7u3-linux-i586.tar.gz Oracle JDK 7 is NOT installed. dpkg: error processing oracle-java7-installer (--configure): subprocess installed post-installation script returned error exit status 1 Errors were encountered while processing: oracle-java7-installer

Install steps:

sudo add-apt-repository ppa:eugenesan/java

sudo apt-get update

sudo apt-get install oracle-java7-installer

Could you give me some suggestions how to solve the problem?

Answer 1

From the Ubuntu Documentation on Java:

A note (hopefully temporary) about the Eugene San PPA for those who are attempting to use it and are having issues: As of the time of this entry, the eugenesan/java PPA is broken. ...

Cleanup the failed PPA installation as mentioned in the above link.

I've installed successfully using the procedure described here:

Ask Ubuntu: How do I install Oracle Java JDK 7?