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-F8 to 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).
Having breakpoints that log messages to the console is helpful, but I'd like to do more than that if I can.
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.)
Same as #Noel answer, but some more details. First of all, Expression Evaluation (ALT + F8) can be enabled only in debug mode.
IntelliJ IDEA 13 Community Edition, Windows:
Go to Debug mode and 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
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.
As documented here: It is now the tiny two arrows pointing away from each other diagonally at the end of the expression box.
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...
Related
Is there a way to disable this inspection? I know, this maybe be a bad design, but I still would like to disable it.
Find an instance of the inspection, and hit ALT+ENTER to open the content menu. You'll see a suggestion there that looks like "Inline value 'XYZ' for parameter 'myParameter'". Click the right arrow next to it to open a second context menu, and there you'll find options to edit the inspection setting in order to tune the conditions that will produce it, suppress it for the method/class/parameter, or even disable it altogether.
#SuppressWarnings("SameParameterValue")
I tested it in Android Studio 3.5, which is based on IntelliJ-Idea, so it probably works in other IntelliJ-Idea based IDEs too.
Use #SuppressWarnings("SameParameterValue") in java
and #Suppress("SameParameterValue") in kotlin
Tested on Android Studio Arctic Fox | 2020.3.1
Sorry for the strange name of my question. I don't know how to look for this because I don't know how these things are called.
There's a features in Visual Studio at least where you can click on the left of the code and set a starting point which is a big red dot. Then you run the program and you can trace the steps by pressing f8 or f5 (different f's really) and you see the variable values on each step etc. I find it extremely useful because I can see where an error occurs and how the program behaves.
I have no idea what this is called and I want to ask is there such a thing in NetBeans IDE 8.0.2 or jGrasp or any java compiler?
Sorry if anything sounds stupid, I'm kind of a newbie.
Thank you all
Most IDEs have debugging functionality built in.
In Netbeans, you can easily add/remove a break point by simply clicking the line number on right side of the source editor (you can also do via the editor popup menu)
You start the debugger through F5 (ShiftF5 for debug the current file) or via the debug icon on the toolbar
You can use F8 to step over the command/method call, F7 to step into a method. You can resume running the program using F5 while the debugger is running.
See Debugger and Profiler and Using the Visual Debugger in NetBeans IDE for more details
Finding how to do this in your IDE is pretty easy, see the other answers.
What is a bit more difficult is debugging an external (and/or) remote Java program in your IDE. Here it is how to do that with Eclipse: http://www.ibm.com/developerworks/library/os-eclipse-javadebug/. I guess other IDEs are similar. If you test via Maven/Surefire, you have a simple flag to do the same: http://maven.apache.org/surefire/maven-surefire-plugin/examples/debugging.html
does netbeans have something like Eclipse Debug display view?
I love the interactive window for trying out Java code in Eclipse debug mode, and it's mentioned in this post:
Is there any Python-like interactive console for Java?
Just wondering if I can get the same in netbeans
There is a menu option: Debug - Evaluate Expression...
And also a shortcut: Ctrl+F9 (in Windows)
You can see an explanation at How to Evaluate Code
There isn't an interactive window for debugging quite like Eclipse, although you can set up breakpoints in the program while debugging to follow the step by step route in which the program executes. Have you looked at the NetBeans site? http://netbeans.org/features/java/debugger.html
While debugging, press ctrl+shift+I to evaluate an expression. In the "Evaluate Expression" window you can do the same as in eclipse's display window.
I use Eclipse for Java development. I like the auto-activation feature because I can add all the letters and numbers so I can see class members while I'm typing; making it behave similarly to Visual Studio. If I don't add all of the letters and numbers to the auto-activation list, it will only pop up with class information when I'm typing the first letter after the '.' delimiter, and then it disappears.
The real problem arises when I'm typing in a variable name or something else. As soon as I hit space, the auto-complete types a bunch of crap following what I've typed in attempt to complete it. It's driving me crazy!
Any way to turn this off?
The checkbox you have to check is: "Disable insertion triggers exept 'Enter' "
(under Java -> Editor -> Content assist)
I'm on Eclipse 2018-12 and C_H's answer had no effect on the behavior:
I believe what you'll want is to deactivate "Insert single proposals automatically"
EDIT: It seems this answer is now outdated. It may work for old Eclipse versions. For any more recent versions refer to #ChrisP's answer from 2019.
Open menu Window, then Preferences. Follow path Java -> Editor -> Content assist. Now mess around with the settings to find your ideal setup. I believe what you'll want is to deactivate Insert single proposals automatically.
If anyone wants to know how to stop the auto-complete for brackets:
Toggle off: "Edit --> Smart Insert Mode"
Version: Eclipse Photon
In continuation to #G_H's answer :
This worked for me although I am sure there is another and a better way.
Window -> Preferences -> Java -> Editor -> Content Assist -> Set Auto Activation Delay(ms) : 200ms from 0ms in my case.
You may want to increase/decrease the value 200 depending on your typing speed.
The reason this worked is because of the hitting of "Spacebar" before the delay arrives.
I was curious if anyone knows a way (by using a setting or a plugin or something), that would allow me to select variable names on the fly in netbeans, in the same way that Visual Studio 2008 does using an automatic popup window? At the moment I can access them by pressing Ctrl + Space, but I wondered if there is a way that I could avoid this and just have them come up automatically as I type, and the methods would come up with the '.' operator as normal?
The settings in 'Tools->Options->Editor->Code Completion' doesn't seem to have the Ctrl + Space setting I'm looking for, only a tickbox for toggling the normal '.' code completion of method names on or off..
(if it helps, the version of Netbeans is 6.9.1, and I'm writing in Java for Glassfish)
I tried to get the desired feature by adding the alphabet to the completion selectors. It worked somewhat, you can always try it.
Goto:
Tools -> Options -> Editor -> Code Completion
Select
Language: [Java]
Check:
[X] Auto Popup on Typing Any Java Identifier Part
Completion Selectors for Java:
[.,;:([+-=abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVXYZ]
Good Luck!
This looks like it was a commonly requested feature for NetBeans, added back in 2009. The setting appears to be Tools -> Options -> Editor -> Code Completion -> Auto Popup Completion Window in those builds (discussion; see also).
The feature you're asking about from Visual Studio is IntelliSense, by the way. If you're looking for a terrific, IntelliSense-drive IDE for Java, you might want to consider IntelliJ.
In NetBeans preferences, choose the code completion; then chose Java instead of all languages; and then choose all the options. You will get it. Goodluck.
Yes, I got it.
Tools > Option > Editor > Code Compilation > Language > Java
That's so easy in NetBeans.
Invoke Code Completion
Inside NetBeans editor simply press Ctrl+spacebar
it will give suggestions for variables, methods, etc
I tried to get the desired feature by adding the alphabet to the completion selectors. It worked somewhat, you can always try it.
This works for the first two characters you type This is updated one
Goto:
Tools -> Options -> Editor -> Code Completion
Select
Language: [C/C++]
Autopop Triggers for C/C++ Identifiers
.;->;.*;->*;::;new ; 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Good Luck!