javaws: 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 Debian possible default full paths are:

/usr/lib/jvm/java-6-openjdk-amd64/bin/javaws - from package: icedtea-netx
/usr/lib/jvm/java-6-openjdk-amd64/jre/bin/javaws - from package: icedtea-netx
/usr/lib/jvm/java-7-openjdk-amd64/bin/javaws - from package: icedtea-netx
/usr/lib/jvm/java-7-openjdk-amd64/jre/bin/javaws - from package: icedtea-netx

You may install the required package with command apt-get install {package}

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