OpenJDK: Difference between revisions
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'''[http://openjdk.java.net/ OpenJDK]''' is an [[open source|free]] implementation of [[:Category:Java|Java]] for [[Linux]], [[Solaris]] and [[Windows]].<ref>[http://hg.openjdk.java.net/jdk7/build/raw-file/tip/README-builds.html#MBE OpenJDK Build README: Minimum Build Environments]</ref> |
'''[http://openjdk.java.net/ OpenJDK]''' is an [[open source|free]] implementation of [[:Category:Java|Java]] for [[Linux]], [[Solaris]] and [[Windows]].<ref>[http://hg.openjdk.java.net/jdk7/build/raw-file/tip/README-builds.html#MBE OpenJDK Build README: Minimum Build Environments]</ref> |
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There is also OpenJDK for [[BSD]]<ref>[http://openjdk.java.net/projects/bsd-port/ OpenJDK: BSD Port Project]</ref>. |
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Several BSD and Linux distros carry packages of OpenJDK. |
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OpenJDK can compile and run Java programs. |
OpenJDK can compile and run Java programs. |
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OpenJDK 6 implements Java 6, while OpenJDK 7 is a preview of future Java 7. |
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== Usage == |
== Usage == |
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OpenJDK is a set of command-line tools. |
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If OpenJDK is installed in <tt>/usr/local/jdk-1.7.0</tt>, then <tt>/usr/local/jdk-1.7.0/bin</tt> needs to be added to the <tt>PATH</tt> environment variable. |
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The two most important tools are the [[javac]] compiler, and the java runner. |
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This example program would compute 12 - 4. |
This example program would compute 12 - 4. |
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Revision as of 14:29, 6 November 2014
OpenJDK is an free implementation of Java for Linux, Solaris and Windows.[1] There is also OpenJDK for BSD[2]. Several BSD and Linux distros carry packages of OpenJDK.
OpenJDK can compile and run Java programs. OpenJDK 6 implements Java 6, while OpenJDK 7 is a preview of future Java 7.
Usage
OpenJDK is a set of command-line tools. If OpenJDK is installed in /usr/local/jdk-1.7.0, then /usr/local/jdk-1.7.0/bin needs to be added to the PATH environment variable. The two most important tools are the javac compiler, and the java runner.
This example program would compute 12 - 4.
<lang java>/* TwelveMinusFour.java */ public class TwelveMinusFour { public static void main(String[] args) { System.out.println(12 - 4); } }</lang>
One can compile this program with javac, and run it with java.
<lang bash>$ javac TwelveMinusFour.java $ java TwelveMinusFour 8</lang>