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| Adding new methods |
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| <h1> |
| Adding new methods |
| </h1> |
| <ol> |
| <li>Start adding a method by typing the following at the end |
| of the <em>VectorTest.java</em> file (but before the closing |
| brace of the type) in the Java editor:<br /> |
| |
| <code>public void testSizeIsThree()</code><br /> |
| As soon as you type the method name in the editor area, the |
| new method appears at the bottom of the Outline view. |
| <p> |
| <img src="images/editor_vectortest_testSizeIsThree.png" |
| alt="New method in outline view" /> |
| </p>In addition, |
| <ul> |
| <li>error annotations (red boxes) appear in the overview |
| ruler positioned on the right hand side of the editor, |
| </li> |
| <li>error icons appear in the vertical ruler positioned |
| on the left of the editor, |
| </li> |
| |
| <li>an error indicator appears in the top right corner of |
| the editor, |
| </li> |
| <li>errors are marked in the text. |
| </li> |
| </ul>These error annotations indicate that the compilation |
| unit is currently not correct. If you hover over the error |
| in the text, a tool tip appears: <em>Syntax error on token |
| ")", { expected after this token</em>. This is correct |
| since the method doesn't have a body yet. Note that error |
| annotations in the editor are updated as you type. This |
| behavior can be controlled via the <strong>Report problems |
| as you type</strong> option located on the <a class= |
| "command-link" href= |
| 'javascript:executeCommand("org.eclipse.ui.window.preferences(preferencePageId=org.eclipse.jdt.ui.preferences.JavaEditorPreferencePage)")'> |
| <img src="PLUGINS_ROOT/org.eclipse.help/command_link.png" |
| alt="Goto the Java editor preference page" /> <strong>Java |
| > Editor</strong></a> preference page. |
| <p> |
| |
| <img src="images/editor_vectortest_problem_hover.png" |
| alt="Error annotations in vertical and overview ruler" /> |
| </p> |
| </li> |
| <li>Click the <strong>Save</strong> button. The compilation |
| unit is compiled automatically and errors appear in the |
| Package Explorer view, in the Problems view and on the |
| vertical ruler (left hand side of the editor). In the Package |
| Explorer view, the errors are propagated up to the project of |
| the compilation unit containing the error. |
| <p> |
| <img src= |
| "images/view_package_explorer_vectortest_error.png" alt= |
| "Error propagation in package explorer" /> |
| </p> |
| </li> |
| |
| <li>Complete the new method by typing the following:<br /> |
| <p> |
| <code>{<br /> |
| //TODO: Check size<br /></code> |
| </p>Note that the closing curly brace has been inserted |
| automatically. |
| </li> |
| <li>Save the file. Notice that the error indicators disappear |
| since the missing brace has been added. |
| </li> |
| |
| </ol> |
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| Next Section: <a href="qs-ContentAssist.htm">Using content |
| assist</a> |
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| "Related concepts" /> |
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| <p> |
| |
| <a href="../concepts/concept-java-editor.htm">Java |
| editor</a><br /> |
| </p> |
| <p> |
| <img src="../images/ngrelr.png" alt="Related reference" /> |
| </p> |
| <p> |
| <a href= |
| "../reference/preferences/java/ref-preferences-editor.htm">Java |
| Editor Preferences</a><br /> |
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