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| <title> Creating a Java class </title> |
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| <h1> Creating a Java class </h1> |
| <p> In this section, you will create a new Java class and add methods using |
| code generation actions. </p> |
| <ol> |
| <li> In the Package Explorer view, select the JUnit project. |
| Click the <strong>New Java Package</strong> button in the toolbar, or select <strong>New > Package</strong> from the project's |
| context menu . </li> |
| <li> In the <strong>Name</strong> field, type <em>test</em> as the |
| name for the new package. Then click <strong>Finish</strong>. </li> |
| <li> In the Package Explorer view, select the new <em>test</em> package |
| and click the <strong>New Java Class</strong> button in the toolbar. |
| </li> |
| <li> Make sure that <em>JUnit</em> appears in the <strong>Source Folder</strong> |
| field and that <em>test</em> appears in the <strong>Package</strong> |
| field. In the <strong>Name</strong> field, type <em>MyTestCase</em>. |
| <p> <img src="images/wiz_new_class_dialog.png" alt="Java Class wizard"> |
| </p> |
| </li> |
| <li> Click the <strong>Browse</strong> button next to the <strong>Superclass</strong> |
| field. </li> |
| <li> In the <strong>Choose a type</strong> field in the Superclass Selection |
| dialog, type <em>Test</em> to narrow the list of available superclasses. |
| <p> <img src="images/superclass_selection_dialog.png" alt="Superclass Selection dialog"> |
| </p> |
| </li> |
| <li> Select the <em>TestCase</em> class and click <strong>OK</strong>. |
| </li> |
| <li> Select the checkbox for <strong>Constructors from superclass</strong>. |
| </li> |
| <li> Click <strong>Finish</strong> to create the new class. |
| <p> <img src="images/wiz_new_class_dialog_superchecked.png" alt="Java Class wizard"> |
| </p> |
| </li> |
| <li> The new file is opened in the editor. It contains the new class, |
| the constructor and comments. You can select options for the creation and |
| configuration of generated comments in the |
| <a class="command-link" href='javascript:executeCommand("org.eclipse.ui.window.preferences(preferencePageId=org.eclipse.jdt.ui.preferences.CodeTemplatePreferencePage)")'> |
| <img src="PLUGINS_ROOT/org.eclipse.help/command_link.png" alt="Goto the code templates preference page"> |
| <strong>Java > Code Style > Code Templates</strong></a> |
| preference page.</li> |
| <li> In the Outline view select the new class <em>MyTestCase</em>. Open |
| the context menu and select <strong>Source > Override/Implement Methods...</strong>. |
| <p> <img src="images/editor_mytestcase_outline_override.png" alt="Context menu of a type"> |
| </p> |
| </li> |
| <li> In the Override Methods dialog, check <em>setUp()</em> and <em>tearDown()</em> |
| and click <strong>OK</strong>. Two methods are added to the class. |
| <p> <img src="images/override_implement_dialog.png" alt="Override Methods dialog"> |
| </p> |
| </li> |
| <li> Change the body of <em>setUp()</em> to <code>container= new Vector();</code> </li> |
| <li> <em>container</em> and <em>Vector</em> are underlined with a problem |
| highlight line as they cannot be resolved. A light bulb appears on the marker |
| bar. Set the cursor inside <em>Vector</em> and press <kbd>Ctrl+1</kbd> (or use |
| <strong>Edit > Quick Fix</strong> from the menu bar). Choose <em>Import 'Vector' (java.util)</em>.This adds the missing import declaration. |
| <p> <img src="images/editor_mytestcase_import.png" alt="Correction proposals for Vector"><br> |
| </p> |
| Set the cursor inside <em>container</em> and press <kbd>Ctrl+1</kbd>. Choose <em>Create |
| field 'container'</em> to add the new field. |
| <p> <img src="images/editor_mytestcase_field.png" alt="Correction proposals for container"> |
| </p> |
| </li> |
| <li> In the Outline view, select the class <em>MyTestCase</em>. Open the |
| context menu and select <strong>Source > Generate Getters and Setters...</strong>. |
| <p> <img src="images/editor_mytestcase_getters.png" alt="Generate Getter and Setter in context menu"> |
| </p> |
| </li> |
| <li> The Generate Getter and Setter dialog suggests that you create the methods getContainer |
| and setContainer. Select both and click <strong>OK</strong>. A getter |
| and setter method for the field container are added. |
| <p> <img src="images/generate_getter_setter_dialog.png" alt="Generate Getter and Setter dialog"> |
| </p> |
| </li> |
| <li> Save the file. </li> |
| <li> The formatting of generated code can be configured in the |
| <a class="command-link" href='javascript:executeCommand("org.eclipse.ui.window.preferences(preferencePageId=org.eclipse.jdt.ui.preferences.CodeFormatterPreferencePage)")'> |
| <img src="PLUGINS_ROOT/org.eclipse.help/command_link.png" alt="Goto the code style formatter perference page"> |
| <strong>Java > Code Style > Formatter</strong></a> preference page. |
| If you use a prefix or suffix for field names (e.g. fContainer), you can specify this in the |
| <a class="command-link" href='javascript:executeCommand("org.eclipse.ui.window.preferences(preferencePageId=org.eclipse.jdt.ui.preferences.CodeStylePreferencePage)")'> |
| <img src="PLUGINS_ROOT/org.eclipse.help/command_link.png" alt="Goto the code style preference page"> |
| <strong>Java > Code Style</strong></a> preference page so that generated |
| getters and setters will suggest method names without the prefix or suffix. |
| </li> |
| </ol> |
| <P class="nav_footer" id="nav_footer">Next Section: <A href="qs-8.htm">Renaming Java elements</A> |
| </P> |
| <img src="../images/ngrelc.png" alt="Related concepts" border="0"> |
| <p> <a href="../concepts/cjavaviews.htm">Java views</a><br> |
| <a href="../concepts/concepts-7.htm">Java editor</a> </p> |
| <p> <img src="../images/ngrelr.png" alt="Related reference" border="0"> |
| </p> |
| <p> <a href="../reference/ref-126.htm">New Java Class wizard</a><br> |
| <a href="../reference/ref-menu-source.htm">Source actions</a><br> |
| <a href="../reference/ref-java-editor-quickfix.htm">Quick Fix</a><br> |
| <a href="../reference/ref-dialog-override-method.htm">Override Methods dialog</a><br> |
| <a href="../reference/ref-dialog-gettersetter.htm">Generate Getter and Setter dialog</a><br> |
| <a href="../reference/ref-17.htm">Code formatter preference page</a><br> |
| <a href="../reference/ref-preferences-code-generation.htm">Code style preference page</a><br> |
| <a href="../reference/ref-preferences-code-templates.htm">Code templates preference page</a><br> |
| </p> |
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