OpenJDKのインストール
Maven2, ServletAPI5等を使用可能にするために、CentOSにJDKを入れようと思っている。
ちょっと調べると「OpenJDK」なる言葉が良く出てくるようになっていた。
“100%フリー”になったOpenJDKの最新動向 – JavaOne 2008
yumでもインストール出来そうだし、今回はOpenJDKをインストールしてみることにする。
yum install java-1.6.0-openjdk Loaded plugins: fastestmirror Loading mirror speeds from cached hostfile * base: www.ftp.ne.jp * updates: www.ftp.ne.jp * addons: www.ftp.ne.jp * extras: www.ftp.ne.jp Setting up Install Process Parsing package install arguments Resolving Dependencies --> Running transaction check ---> Package java-1.6.0-openjdk.i386 1:1.6.0.0-0.30.b09.el5 set to be updated --> Processing Dependency: jpackage-utils >= 1.7.3-1jpp.2 for package: java-1.6.0-openjdk --> Running transaction check ---> Package jpackage-utils.noarch 0:1.7.3-1jpp.2.el5 set to be updated --> Finished Dependency Resolution Dependencies Resolved ====================================================================================================================================================== Package Arch Version Repository Size ====================================================================================================================================================== Installing: java-1.6.0-openjdk i386 1:1.6.0.0-0.30.b09.el5 updates 28 M Installing for dependencies: jpackage-utils noarch 1.7.3-1jpp.2.el5 base 61 k Transaction Summary ====================================================================================================================================================== Install 2 Package(s) Update 0 Package(s) Remove 0 Package(s) Total download size: 28 M Is this ok [y/N]: y Downloading Packages: (1/2): jpackage-utils-1.7.3-1jpp.2.el5.noarch.rpm | 61 kB 00:00 (2/2): java-1.6.0-openjdk-1.6.0.0-0.30.b09.el5.i386.rpm | 28 MB 00:55 ------------------------------------------------------------------------------------------------------------------------------------------------------ Total 518 kB/s | 28 MB 00:56 Running rpm_check_debug Running Transaction Test Finished Transaction Test Transaction Test Succeeded Running Transaction Installing : jpackage-utils [1/2] Installing : java-1.6.0-openjdk [2/2] Installed: java-1.6.0-openjdk.i386 1:1.6.0.0-0.30.b09.el5 Dependency Installed: jpackage-utils.noarch 0:1.7.3-1jpp.2.el5 Complete!
特に問題なくインストール完了。（上記では2つしか選択していないけど、後でjava-1-6-0.openjdk*を全部入れた）
バージョンが変わったかどうかの確認は/etc/alternativesのリンク先を見るのが確実かな
[root@server alternatives]# ls -la java* lrwxrwxrwx 1 root root 39 6月 16 09:50 java -> /usr/lib/jvm/jre-1.6.0-openjdk/bin/java lrwxrwxrwx 1 root root 48 6月 16 09:50 java.1.gz -> /usr/share/man/man1/java-java-1.6.0-openjdk.1.gz lrwxrwxrwx 1 root root 31 6月 16 09:59 java_sdk -> /usr/lib/jvm/java-1.6.0-openjdk lrwxrwxrwx 1 root root 31 6月 16 09:59 java_sdk_1.6.0 -> /usr/lib/jvm/java-1.6.0-openjdk lrwxrwxrwx 1 root root 39 6月 16 09:59 java_sdk_1.6.0_exports -> /usr/lib/jvm-exports/java-1.6.0-openjdk lrwxrwxrwx 1 root root 39 6月 16 09:59 java_sdk_exports -> /usr/lib/jvm-exports/java-1.6.0-openjdk lrwxrwxrwx 1 root root 31 6月 16 09:59 java_sdk_openjdk -> /usr/lib/jvm/java-1.6.0-openjdk lrwxrwxrwx 1 root root 39 6月 16 09:59 java_sdk_openjdk_exports -> /usr/lib/jvm-exports/java-1.6.0-openjdk lrwxrwxrwx 1 root root 41 6月 16 09:59 javac -> /usr/lib/jvm/java-1.6.0-openjdk/bin/javac lrwxrwxrwx 1 root root 49 6月 16 09:59 javac.1.gz -> /usr/share/man/man1/javac-java-1.6.0-openjdk.1.gz lrwxrwxrwx 1 root root 43 6月 16 09:59 javadoc -> /usr/lib/jvm/java-1.6.0-openjdk/bin/javadoc lrwxrwxrwx 1 root root 51 6月 16 09:59 javadoc.1.gz -> /usr/share/man/man1/javadoc-java-1.6.0-openjdk.1.gz lrwxrwxrwx 1 root root 41 6月 16 10:00 javadocdir -> /usr/share/javadoc/java-1.6.0-openjdk/api lrwxrwxrwx 1 root root 41 6月 16 09:59 javah -> /usr/lib/jvm/java-1.6.0-openjdk/bin/javah lrwxrwxrwx 1 root root 49 6月 16 09:59 javah.1.gz -> /usr/share/man/man1/javah-java-1.6.0-openjdk.1.gz lrwxrwxrwx 1 root root 41 6月 16 09:59 javap -> /usr/lib/jvm/java-1.6.0-openjdk/bin/javap lrwxrwxrwx 1 root root 49 6月 16 09:59 javap.1.gz -> /usr/share/man/man1/javap-java-1.6.0-openjdk.1.gz
超問題なし。
[...] JavaのバージョンはOpenJDKのインストールで設定した通り。 # java -version java version "1.6.0" OpenJDK Runtime Environment (build 1.6.0-b09) OpenJDK Client VM (build 1.6.0-b09, mixed mode) [...]