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| <h1> Evaluating expressions </h1> |
| <p>When the VM suspends a thread (due to hitting a breakpoint or stepping through |
| code), you can evaluate expressions in the context of a stack frame. </p> |
| <ol> |
| <li> Select the stack frame in which an evaluation is to be performed. The evaluation context will be the currently selected variable in the view. If no variable |
| is selected, the selected stack frame will be the context. </li> |
| <li> Expressions can be entered and evaluated in the following areas: |
| <ul> |
| <li> <strong><a href="../reference/views/display/ref-display_view.htm">Display View</a></strong> </li> |
| <li> <a href="../reference/views/shared/ref-detailpane.htm"><strong>Detail Pane</strong></a> (in the <a href="../reference/views/expressions/ref-expressions_view.htm"><strong>Expressions View</strong></a> and <a href="../reference/views/variables/ref-variables_view.htm"><strong>Variables View</strong></a>)</li> |
| <li><a href="../concepts/concept-java-editor.htm"><strong>Java Editor</strong></a> when it is displaying source and it is not read-only </li> |
| </ul> |
| </li> |
| <li> Select the expression to be evaluated and select <a href="../reference/views/shared/ref-display.htm"><strong>Display</strong></a>, <a href="../reference/views/shared/ref-inspect.htm"><strong>Inspect</strong></a> or <a href="../reference/views/shared/ref-execute.htm"><strong>Execute</strong></a> from the context pop-up |
| menu. The result of a <strong>Display</strong> or <strong>Inspect </strong>evaluation |
| is shown in a popup window. Note that <strong>Execute</strong> does not display |
| a result - the expression is just executed.</li> |
| <li>The result popup window can be dismissed by clicking outside of the popup |
| window or by pressing <em><strong>Esc</strong></em>. The result can be persisted to |
| the Display view (if <strong>Display</strong> was chosen) or Expressions view |
| (if <strong>Inspect</strong> was chosen) by pressing the key sequence shown |
| at the bottom of the popup window. For example, to move the result of an <strong>Inspect </strong>evaluation to the Expressions view press <em><strong>Ctrl-Shift-I</strong></em>. |
| Note that when the <strong>Display</strong> action is used from the Display |
| view the result is written to the Display view rather than a popup</li> |
| </ol> |
| <p><strong>Note:</strong> Evaluations cannot be performed in threads that have been manually suspended.</p> |
| <p> <img border="0" src="../images/ngrelc.png" alt="Related concepts" ><br> |
| <a href="../concepts/cdebugger.htm">Debugger</a><br> |
| <a href="../concepts/concept-java-editor.htm">Java editor</a> </p> |
| <p> <img border="0" src="../images/ngrelt.png" alt="Related tasks" ><br> |
| <a href="../tasks/task-suspending_threads.htm">Suspending threads</a><br> |
| <a href="../tasks/task-resuming_threads.htm">Resuming the execution of suspended threads</a> </p> |
| <p><img border="0" src="../images/ngrelr.png" alt="Related reference" ><br> |
| <a href="../reference/views/shared/ref-detailpane.htm">Detail Pane</a><br> |
| <a href="../reference/views/display/ref-display_view.htm">Display view</a><br> |
| <a href="../reference/views/expressions/ref-expressions_view.htm">Expressions view</a><br> |
| <a href="../reference/views/variables/ref-variables_view.htm">Variables view</a></p> |
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