I have Oracle/Sun JDK 7 installed and alternatives setup. When I try to install Arduino IDE, it says

$ sudo apt-get install arduino

Reading package lists... Done

Building dependency tree       

Reading state information... Done

The following packages were automatically installed and are no longer required:

  ax25-node libax25 openbsd-inetd

Use 'apt-get autoremove' to remove them.

The following extra packages will be installed:

  ca-certificates-java default-jre default-jre-headless extra-xdg-menus icedtea-7-jre-jamvm java-common libatk-wrapper-java libatk-wrapper-java-jni libjna-java

  openjdk-7-jre openjdk-7-jre-headless openjdk-7-jre-lib ttf-dejavu-extra tzdata-java

Suggested packages:

  equivs libjna-java-doc icedtea-7-plugin sun-java6-fonts fonts-ipafont-gothic fonts-ipafont-mincho ttf-telugu-fonts ttf-oriya-fonts ttf-kannada-fonts ttf-bengali-fonts

The following NEW packages will be installed:

  arduino ca-certificates-java default-jre default-jre-headless extra-xdg-menus icedtea-7-jre-jamvm java-common libatk-wrapper-java libatk-wrapper-java-jni libjna-java

  openjdk-7-jre openjdk-7-jre-headless openjdk-7-jre-lib ttf-dejavu-extra tzdata-java

0 upgraded, 15 newly installed, 0 to remove and 61 not upgraded.

Need to get 45.4 MB of archives.

After this operation, 68.2 MB of additional disk space will be used.

Do you want to continue [Y/n]? n

Abort.

I do not know how to solve this. I do not want another JDK/JRE installed. Any help is appreciated.