Windows: 不能通過.exe安裝包直接安裝Java，於是手動解壓.zip並且設定相應的環境變數。 登錄檔需要手動填寫Runtime Environment以便Octave找到Java:

Windows Registry Editor Version 5.00 [HKEY_LOCAL_MACHINE\SOFTWARE\JavaSoft\Java Runtime Environment]“CurrentVersion”=“1.5”

[HKEY_LOCAL_MACHINE\SOFTWARE\JavaSoft\Java Runtime Environment\1.5]“JavaHome”="D:\jdk1.5.0_11"“RuntimeLib”=“D:\jdk1.5.0_11\jre\bin\client\jvm.dll”“MicroVersion”=“0” [HKEY_LOCAL_MACHINE\SOFTWARE\JavaSoft\Java Runtime Environment\1.5.0]“JavaHome”="D:\jdk1.5.0_11"“MicroVersion”="0"“RuntimeLib”=“D:\jdk1.5.0_11\jre\bin\client\jvm.dll”