jvmjar: command not found

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/jvmjar - from package: jpackage-utils

You may install the required package with command yum install {package}

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