how to install to install jre-7u7-linux-x64.tar.gz

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http://askubuntu.com – i have just download a file jre-7u7-linux-x64.tar.gz and i am new to ubuntu so i don't know how to install it. i only can install a software from software center. can someone help me to install it on ubuntu 12.04 os and tell me the steps so that another time i don't need to ask question to install a file and why does this sites says that every time i want to post the question it always says Oops! Your question couldn't be submitted because: It does not meet our quality standards. (HowTos)