$ sudo apt-get install openjdk-7-jdk
[sudo] password for bpabbott:
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following extra packages will be installed:
libxt-dev
Suggested packages:
libxt-doc openjdk-7-demo openjdk-7-source visualvm
The following NEW packages will be installed:
libxt-dev openjdk-7-jdk
0 upgraded, 2 newly installed, 0 to remove and 0 not upgraded.
Need to get 17.1 MB of archives.
After this operation, 21.8 MB of additional disk space will be used.
Do you want to continue [Y/n]?
Now the jni.h is where it belongs!