Java IntelliJ 的“立即”窗口
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'Immediate' window for IntelliJ
提问by Jon Onstott
I'm using IntelliJ 9 and I'm curious if there is any IntelliJ equivalent of the Visual Studio 'immediate' debug window. There is selecting the desired expression in the editor, then ALT-F8to evaluate the expression, but I'd like to be able to write code in a window that interacts with what I am currently debugging (if that's even possible).
我正在使用 IntelliJ 9，我很好奇是否有任何与 Visual Studio“立即”调试窗口等效的 IntelliJ。在编辑器中选择所需的表达式，然后ALT-F8评估表达式，但我希望能够在与我当前调试的内容交互的窗口中编写代码（如果可能的话）。
Having breakpoints that log messages to the console is helpful, but I'd like to do more than that if I can.
将消息记录到控制台的断点很有帮助，但如果可以的话，我想做更多的事情。
采纳答案by Noel Ang
Intellij IDEA's Expression Evaluation dialog has a button to enable Code Fragment Mode, which permits multi-statement evaluations. (I'm using version 9.0.2 of the Ultimate Edition.)
Intellij IDEA 的 Expression Evaluation 对话框有一个按钮来启用Code Fragment Mode，它允许多语句评估。（我使用的是终极版 9.0.2 版。）
回答by bwawok
You can write code in alt-f8.. but you have to do it only 1 line at a time. If you do a return, your code will return when you hit next (I think). It isn't ideal though...
您可以在 alt-f8 中编写代码 .. 但一次只能写 1 行。如果您返回，您的代码将在您点击下一个时返回（我认为）。虽然并不理想...
回答by om-nom-nom
Same as @Noel answer, but some more details. First of all, Expression Evaluation(ALT+ F8) can be enabled only in debug mode.
与@Noel 的回答相同，但有更多细节。首先，表达式求值( ALT+ F8)只能在调试模式下启用。
回答by ROMANIA_engineer
IntelliJ IDEA 13Community Edition, Windows:
IntelliJ IDEA 13社区版，Windows：
- Go to Debug modeand run the application
Go to Evaluate Expression:
or right click in the editor area:
Go to Code Fragment Mode
Type your statements and click on Evaluate
- 进入调试模式并运行应用程序
转到评估表达式：
或右键单击编辑器区域：
进入代码片段模式
输入您的陈述并点击评估
回答by AzzamAziz
FYI for anyone looking for this in 2019: I tried to do this in IntelliJ IDEA 2019.1 (Ultimate Edition) but couldn't find Code Fragment Mode button in the Expression Evaluation Dialog.
对于在 2019 年寻找此内容的任何人，仅供参考：我尝试在 IntelliJ IDEA 2019.1（终极版）中执行此操作，但在表达式评估对话框中找不到代码片段模式按钮。
As documented here: It is now the tiny two arrows pointing away from each other diagonally at the end of the expression box.
如此处所述：现在是表达式框末端对角线相互远离的两个微小箭头。
