OpenJDK for OpenWrt

11 March 2023 - 4 mins read time
Tags: OpenWrt OpenJDK JDK Java

Tutorial Bahasa Indonesia

Jalankan OpenJDK di OpenWrt (musl-based)

• Script pada tutorial Reinhart Previano s’ hanya bekerja untuk jdk8 dan jdk11 dengan versi lawas dari paket JDK yang ada.
• Script dari josedelinux akan otomatis mengunduh OpenJDK di OpenWrt, tetapi terlalu rumit karena harus menyiapkan beberapa pengaturan terlebih dahulu, dia menggunakan java untuk server Minecraft (papermc).
• Script versi Helmi Amirudin menyediakan:
  • Instalasi mudah.
  • Mendukung banyak platform perangkat (architectures).
  • Bisa memilih versi OpenJDK sesuai selera (seperti jdk8,jdk9 or something else).
  • Bisa memilih versi rilisan OpenJDK (you can get version number from

Informasi Dukungan

• Mendukung architectures dibawah ini:

  • aarch64
  • armhf
  • armv7
  • ppc64le
  • s390x
  • x86 this 32bit
  • x86_64
• Mendukung versi OpenJDK: jdk8 ~ jdk17
• Mendukung rilis versi OpenJDK: v3.0 ~ v3.17

Persiapan

• Koneksi internet
• Penyimpanan kosong lebih dari 800mb

Pemasangan

1. Buka Putty/Terminal/TTYD/XTERM or similar apps like these.

2. Jalankan perintah terminal di bawah ini untuk mengunduh script installjdk ke OpenWRT (pilih salah satu dari kedua cara dibawah):

   wget installation:

    wget https://raw.githubusercontent.com/helmiau/openwrt-jdk/main/installjdk.sh -O /root/installjdk && chmod +x /root/installjdk
   

   curl installation:

    curl -sL https://raw.githubusercontent.com/helmiau/openwrt-jdk/main/installjdk.sh > /root/installjdk && chmod +x /root/installjdk
   

3. Jalankan perintah instalasi, seperti contoh berikut (sesuaikan dengan perangkat masing-masing):

   Informasi perintah:

    ./installjdk device_architecture jdk_version release_version
   

   • Ganti device_architecture dengan arsitektur perangkatmu dari daftar Mendukung architectures dibawah ini diatas.
   • Ganti jdk_version dengan ``versi OpenJDK` diatas.
   • Ganti release_version dengan rilis versi OpenJDK diatas.

   Contoh:

   Saya ingin memasang openjdk8 untuk x86 32-bit dengan rilisan openjdk terbaru, maka jalankan:

    ./installjdk x86 jdk8
   

   Saya ingin memasang openjdk11 untuk aarch64 dengan versi rilis v3.14, maka jalankan:

    ./installjdk aarch64 jdk11 v3.14
   

4. Reboot lalu jalankan java -version di terminal untuk melihat versi Java yang terpasang.

English Tutorial

Run OpenJDK on OpenWrt (musl-based)

• Reinhart Previano s’ tutorial is for jdk8 and jdk11 script only with older packages links
• josedelinux scripts will automatically download musl-based OpenJDK to current directory, it works on my raspberry pi 3b+ , my Minecraft server(papermc) works fine too
• My improvements will do:
  • Easy-install.
  • Support multiple platform (architectures).
  • Selectable OpenJDK version (like jdk8,jdk9 or something else).
  • Selectable OpenJDK release version (you can get version number from

Supported Information

• Available supported device architectures:

  • aarch64
  • armhf
  • armv7
  • ppc64le
  • s390x
  • x86 this 32bit
  • x86_64
• Available OpenJDK version: jdk8 ~ jdk17
• Available OpenJDK release version: v3.0 ~ v3.17

Requirements

• Internet connection
• Empty storage space more than 800mb

Installation

1. Open Putty/Terminal/TTYD/XTERM or similar apps like these.

2. Run commands below to download installjdk script to your OpenWRT (choose one of installation method below):

   wget installation:

    wget https://raw.githubusercontent.com/helmiau/openwrt-jdk/main/installjdk.sh -O /root/installjdk && chmod +x /root/installjdk
   

   curl installation:

    curl -sL https://raw.githubusercontent.com/helmiau/openwrt-jdk/main/installjdk.sh > /root/installjdk && chmod +x /root/installjdk
   

3. Select one of below sample installation:

   Command informations:

    ./installjdk device_architecture jdk_version release_version
   

   • Replace device_architecture with your device arhitecture from supported device architectures above.
   • Replace jdk_version with ``OpenJDK version` above.
   • Replace release_version with OpenJDK release version above.

   Example(s):

   i want to install openjdk8 for x86 32-bit with latest release version, then i run:

    ./installjdk x86 jdk8
   

   i want to install openjdk11 for aarch64 with release version v3.14, so i run:

    ./installjdk aarch64 jdk11 v3.14
   

4. Reboot and run java -version on terminal to see installed java version on your machine.

Known Bugs

• Java with SSL Certificate is still bug, so you can run java app containing ssl certificate like this issue Failed to get extensions from GitHub caused by the trustAnchors parameter must be non-empty

References

• josedelinux/openwrt-jdk
• Reinhart Previano’s blog
• Adoptium Temurin OpenJDK Build Doc
• opkg checker and installer, internet checker, vpn manager, gmt selection codes by Helmi Amirudin