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| <title> |
| Running your programs |
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| <h1> |
| Running your programs |
| </h1> |
| <p> |
| In this section, you will learn more about running Java |
| programs in the workbench. |
| </p> |
| <ol> |
| |
| <li>In the Package Explorer view, find |
| <em>junit.textui/TestRunner.java</em> and double-click it to |
| open it in an editor. |
| </li> |
| <li>In the Outline view, notice that the TestRunner class has |
| an icon which indicates that the class defines a |
| <code>main</code> method. |
| <p> |
| <img src="images/view_outline_testrunner_main.png" alt= |
| "Outline view with selected TestRunner class" /> |
| </p> |
| </li> |
| |
| <li>Right click on TestRunner.java in the Package Explorer |
| and select <strong>Run As</strong> > <strong>Java |
| Application</strong>. This will launch the selected class as |
| a local Java application. The <strong>Run As</strong> context |
| menu item is also available in other places, such as the |
| Outline view. |
| <p> |
| <img src="images/view_outline_testrunner_run.png" alt= |
| "Run context menu" /> |
| </p> |
| </li> |
| |
| <li>Notice that the program has finished running and the |
| following message appears in the Console view telling you |
| that the program needs an execution argument. Running |
| class from the Package Explorer as a Java Application uses |
| the default settings for launching the selected class and |
| does not allow you to specify any arguments. |
| <p> |
| <img src="images/view_console_noarg.png" alt= |
| "Console with error message: Usage: TestRunner [-wait] testCaseName, where name is the name of the TestCase class" /> |
| </p> |
| </li> |
| <li>To specify arguments, use the drop-down |
| <strong>Run</strong> menu in the toolbar and select <strong> |
| |
| Run Configurations...</strong>. |
| <p> |
| <img src="images/open_run_dialog.png" alt= |
| "Run menu of the toolbar" /> |
| </p>You can also Ctrl+Click a configuration in the |
| drop-down menu to start editing that configuration. |
| </li> |
| <li>This time, the Launch Configurations dialog opens with |
| the TestRunner launch configuration selected. A launch |
| configuration allows you to configure how a program is |
| launched, including its arguments, classpath, and other |
| options. (A default launch configuration was created |
| for you when you chose <strong>Run > Java |
| Application</strong>). |
| <p> |
| |
| <img src="images/run_dialog.png" alt= |
| "Launch configuration dialog showing the Main tab" /> |
| </p> |
| </li> |
| <li>Select the Arguments tab and type |
| <em>junit.samples.VectorTest</em> in the Program arguments |
| area. |
| <p> |
| <img src="images/run_dialog_arguments.png" alt= |
| "Arguments tab of the launch configuration dialog" /> |
| </p> |
| </li> |
| |
| <li>Click <strong>Run</strong>. This time the program runs |
| correctly, indicating the number of tests that were run. |
| <p> |
| <img src="images/view_console_success.png" alt= |
| "Console showing program output" /> |
| </p> |
| </li> |
| <li> |
| <p> |
| Switch to the Debug perspective. In the Debug view, |
| notice that a process for the last program launch was |
| registered when the program was run. |
| </p> |
| |
| <p> |
| By default, the Debug view automatically removes any |
| terminated launches when a new launch is created. This |
| preference can be configured on the <a class= |
| "command-link" href= |
| 'javascript:executeCommand("org.eclipse.ui.window.preferences(preferencePageId=org.eclipse.debug.ui.LaunchingPreferencePage)")'> |
| <img src="PLUGINS_ROOT/org.eclipse.help/command_link.svg" |
| alt="Goto the Launching preference page" /> |
| <strong>Run/Debug > Launching</strong></a> preference |
| page |
| </p> |
| <p> |
| <img src="images/view_debug.png" alt= |
| "Debug view showing two terminated run launches" /> |
| |
| </p><em>Note: You can relaunch a terminated process by |
| selecting <strong>Relaunch</strong> from its context |
| menu.</em> |
| </li> |
| <li>Select the drop-down menu from the <strong>Run</strong> |
| button in the workbench toolbar. This list contains the |
| previously launched programs. These programs can be |
| relaunched by selecting them in the history list. |
| <p> |
| <img src="images/run_dropdown.png" alt= |
| "Run drop down menu from the workbench toolbar" /> |
| |
| </p> |
| </li> |
| <li>By default the currently selected resource or active |
| editor is launched when the run button is hit. If none of |
| these is launchable the current project will be launched. You |
| can configure this behavior under <a class="command-link" |
| href= |
| 'javascript:executeCommand("org.eclipse.ui.window.preferences(preferencePageId=org.eclipse.debug.ui.LaunchingPreferencePage)")'> |
| <img src="PLUGINS_ROOT/org.eclipse.help/command_link.svg" |
| alt="Goto the Launching preference page" /> |
| <strong>Run/Debug > Launching</strong></a>. |
| <p> |
| <img src="images/pref_launch_operation.png" alt= |
| "Debug view showing two terminated run launches" /> |
| |
| </p> |
| </li> |
| <li>From the context menu in the Debug view (or the |
| equivalent toolbar button), select <strong>Remove All |
| Terminated</strong> to clear the view of terminated launch |
| processes. |
| <p> |
| <img src="images/view_debug_removelaunched.png" alt= |
| "Debug view showing context menu" /> |
| </p> |
| </li> |
| </ol> |
| |
| <p class="nav_footer" id="nav_footer"> |
| Next Section: <a href="qs-13.htm">Debugging your programs</a> |
| </p> |
| |
| <h3 class="related">Related tasks</h3> |
| <a href="../tasks/tasks-9.htm">Changing debugger launch |
| options</a><br /> |
| <a href= |
| "../tasks/task-remotejava_launch_config.htm">Connecting to a |
| remote VM with the Remote Java application launch |
| configuration</a><br /> |
| |
| <a href= |
| "../tasks/task-disconnect_remote_debug.htm">Disconnecting |
| from a VM</a><br /> |
| <a href="../tasks/task-launching_java_program.htm">Launching |
| a Java program</a><br /> |
| <a href="../tasks/task-running_and_debugging.htm">Running and |
| debugging</a><br /> |
| |
| <h3 class="related">Related reference</h3> |
| <a href="../reference/views/debug/ref-debug_view.htm">Debug |
| view</a><br /> |
| <a href="../reference/menus/run/ref-menu-run.htm">Run menu |
| actions</a><br /> |
| <a href="../reference/ref-toolbar-run.htm">Run and debug |
| toolbar actions</a><br /> |
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