as you kNow oracle bans some countries and ... first add key:
sudo add-apt-repository ppa:webupd8team/java sudo apt-get update
then use apt-install to install the package:
sudo apt-get install oracle-java7-installer
after getting error 403,use ls:
ls /var/cache/oracle-jdk7-installer/ jar.binfmt javaws-wrapper.sh jdk-7u55-linux-x64.tar.gz wgetrc
copy.tar.gzfilename and search/download it in the web (http://enos.itcollege.ee/~jpoial/download/jdk7/).
then copy downloaded file to cache:
sudo cp ~/Downloads/jdk-7u55-linux-x64.tar.gz /var/cache/oracle-jdk7-installer/
to ensure that you download the correct file,usemd5sum:
md5sum jdk-7u55-linux-x64.tar.gz 9e1fb7936f0e5aaa1e64d36ba640bc1f jdk-7u55-linux-x64.tar.gz
result must match with oracle checksum athttp://www.oracle.com/technetwork/java/javase/downloads/java-se-binaries-checksum-1956892.html
after this if you run the install command,installation will be done correctly using cached file:
sudo apt-get install oracle-java7-installer
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