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Launching a Java Program
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<h1>
Launching a Java Program
</h1>
<p>The simplest way to launch a Java program is to run it using a<strong> Java
Application </strong> launch configuration.&nbsp;This launch configuration type
uses information derived from the workbench preferences and your program's Java
project to launch the program. </p>
<ol>
<li> In the <strong>Package Explorer</strong>, select the Java compilation unit
or class file with the main method you want to launch. </li>
<li>Press the <strong>Run</strong> [ <img src="../images/org.eclipse.debug.ui/etool16/run_exc.png" width="16" height="16">
] button in the workbench toolbar or select <strong>Run &gt; Run</strong>
from the workbench menu bar. Alternatively, select <strong>Run As &gt; Java
Application</strong> in the <strong>Package Explorer</strong> pop-up menu,
or select <strong>Run &gt; Run As &gt; Java Application </strong>in the workbench
menu bar, or select <strong>Run As &gt; Java Application </strong>in the drop-down
menu on the <strong>Run</strong> tool bar button.</li>
<li> Your program is now launched, and text output is shown in the <a href="../reference/views/console/ref-console_view.htm"><strong>Console
View</strong></a>. </li>
</ol>
<p>You can also launch a Java program by selecting a project instead of the compilation
unit or class file.&nbsp; You will be prompted to select a class from those
classes that define a <em>main</em> method.&nbsp; (If only one class with a
main method is found in the project, that class is launched as if you selected
it.)</p>
<p>
<img border="0" src="../images/ngrelc.png" alt="Related concepts" ><br>
<a href="../concepts/cjavaviews.htm">Java views</a><br>
<a href="../concepts/concepts-7.htm">Java editor</a><br>
<a href="../concepts/cdebugger.htm">Debugger</a>
</p>
<p>
<img border="0" src="../images/ngrelt.png" alt="Related tasks" ><br>
<a href="task-remotejava_launch_config.htm">Connecting to a remote VM with the Java Remote Application launcher</a><br>
<a href="task-relaunch_program.htm">Re-launching a program</a><br>
<a href="task-running_and_debugging.htm">Running and debugging</a><br>
<a href="../tasks/tasks-executionArgs.htm">Setting execution arguments</a><br>
<a href="task-stepping.htm">Stepping through the execution of a program</a><br>
</p>
<p>
<img border="0" src="../images/ngrelr.png" alt="Related reference" ><br>
<a href="../reference/views/console/ref-console_view.htm">Console View</a> <br>
<a href="../reference/views/debug/ref-debug_view.htm">Debug view</a><br>
<a href="../reference/ref-view-package-explorer.htm">Package Explorer</a><br>
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