java version for solr.

[Radha C.]

Hello List,
 
Our production server is using j2sdk1.4.2_12 and solr requires Java 1.5 . 
So it is must to use java 1.5 in order to use Solr?.  
Can anyone tel me what issues can be faced if we use java1.4 ?  
So do we need to implement any utility to make use of solr in java 1.4
environment?
 
Thanks in advance.