apache2 e tomcat su un server?

[gaiapuffo]

Ciao ho un server su cui gira un app ember su apache2..Ora mi sorge la necessita' di installare un app java, quindi devo installare tomcat..Si puo' senza problemi installarlo e affiancarlo ad apache2?
Ho provato a dare i comandi
apt-get install tomcat7 tomcat7-docs tomcat7-examples tomcat7-admin

mi da questo errore

tomcat7.service - LSB: Start Tomcat.
Loaded: loaded (/etc/init.d/tomcat7)
Active: failed (Result: exit-code) since Mon 2016-05-02 16:30:31 CEST; 17min ago
Process: 28937 ExecStart=/etc/init.d/tomcat7 start (code=exited, status=1/FAILURE)

May 02 16:30:31 ExpAct tomcat7[28937]: tomcat7 is not installed ... failed!
May 02 16:30:31 ExpAct systemd[1]: tomcat7.service: control process exited,...=1
May 02 16:30:31 ExpAct systemd[1]: Failed to start LSB: Start Tomcat..
May 02 16:30:31 ExpAct systemd[1]: Unit tomcat7.service entered failed state.
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