find-jar: command not found

Have You tried accessing the binary with the full path?

Maybe Your $PATH variable doesn't contain the default paths? echo $PATH should give something like:

[root@server ~]# echo $PATH
/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin

If it's empty, You may set the PATH variable with this command

export PATH="/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin"

On CentOS possible default full paths are:

/usr/bin/find-jar - from package: jpackage-utils

You may install the required package with command yum install {package}
Error in other languages:
find-jar: bevel nie gevind nie
find-jar: comandă negăsită
find-jar: comando não encontrado
find-jar: commande introuvable
find-jar: command not found
find-jar: käsku ei ole
find-jar: không tìm thấy lệnh
find-jar: komanda nerasta
find-jar: Kommando nicht gefunden.
find-jar: kommandot finns inte
find-jar: komut yok
find-jar: nie znaleziono polecenia
find-jar: níor aimsíodh an t-ordú
find-jar: no se encontró la orden
find-jar: no s'ha trobat l'ordre
find-jar: opdracht niet gevonden
find-jar: parancs nem található
find-jar: perintah tidak ditemukan
find-jar: príkaz nenájdený
find-jar: příkaz nenalezen
find-jar: команда не найдена
find-jar: командата не е открита
find-jar: 命令找不到
find-jar: コマンドが見つかりません