我正在尝试在我的 Ubuntu 12.04 上安装 Java 7。但是每次我尝试时，它总是显示如下错误。这是即使未安装 Java 7 我也尝试升级的时候
harits@harits-ubuntu:~$ sudo apt-get upgrade
[sudo] password for harits:
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following packages will be upgraded:
oracle-java7-installer
1 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
1 not fully installed or removed.
Need to get 0 B/15.3 kB of archives.
After this operation, 3,072 B of additional disk space will be used.
Do you want to continue [Y/n]? y …