Bash script. How to join two IF in one?
 

I wanna check 3 conditions all together
1. file exist
2. its extention is java
3. in first 120 lines it has $Revision word somewere


if [ -f $f ]; then
if echo "$f" | grep '.*\.java$' > /dev/null; then
if head -120 < "$f" | grep '\$Revision' > /dev/null then
...

it works Ok, but how to join them in one if? How to deal with ramifications in a more compex case?

Separate the conditions with &&

if [ -e $f ] && whatever; then
fi