I am using Eclipse IDE for Java. I need to know, let's say, I am to use the Random class. When I hover onto the Random class, it doesn't display me any information like the "the random class is used to creating random integer", or is this like a buy in Eclipse
Is this how it meant to be? Please help, I am new to programming.
If you're speaking about the popup tooltip that displays information about an item; Go to Window > Preferences > Java > Editor > Hovers.
If you're speaking about the javadoc of a class; Go to Window > show view > javadoc
in javadoc view, right click and open attached javadoc to display the javadoc.
Other way to display detailed information of the methods, class, declaration... when you hover over in Eclipse is to press CTRL while you hover.
Related
I am a .net developer and from last year I started learning Java. But something make me sad, and that is the Java autocomplete IntelliSense. After I choose something from IntelliSense, a method name for example, it put the method name with the default parameter as well. I don't want that!!! I want to work like in Visual Studio, just to put there the name and that's it because usually when I do that I already copy paste a line from above and I want to change only the class method name...
How to change how this autocomplete works?
I attached a photo after I choose a method from that object, but that line was copied from above before choosing.
Do one of the following:
Press Ctrl while selecting a code completion proposal
Configure overwrite instead of insert code completion behavior as default:
In Window > Preferences: Java > Editor > Content Assist in the first section choose Completion overwrites
Your question was already asked here. Basically the gist of it:
Eclipse already has its own sort of Intellisense that only gets triggered by a "." by default. You can change the settings under:
Window -> Preferences -> Java/Editor/Content Assist
A problem, if you want the Intellisense to be always active. The "fix" would be to always use "ctrl"+"space" to open the Intellisense GUI. (Or, even better, to add every letter and character to the Intellisense triggers under: Window -> Preferences -> Java/Editor/Content Assist)
the default Eclipse settings is when you are in Java editor and hold Ctrl and go by mouse over a class or interface name, you can click it and go into that class.
Is it possible to do it by keyboard shortcut only, without mouse? Just move cursor to the name and press a shortcut.
I have set it this way for methods (command "Open Implementation" bound to Ctrl+I) but I can't find out how to do it for classes. Thank you!
Move the cursor over the type and hit F3
Side note: Ctrl+Shift+L opens a small window with all shortcuts and descriptions
yes, for sure make the caret on that class and press F3
Raw javadoc markup is hard to read, but Eclipse has a handy ability to render the javadoc you just wrote in a tooltip. However, if there's a warning, it shows the warning tooltip. How to solve this?
I think the intended behavior is for you to solve the error before writing the javadoc any further. If you want to a quick way to get around it, you can attach the class javadoc by attaching the source in eclipse by:
select Window -> show view -> javadoc (or alt + shift + q, j).
then in the javadoc view, right click -> open attached javadoc (or shift + F2), this will display the javadoc of the class in the internal browser of eclipse.
You can do it by pressing [F2]
When hovering your mouse over a Class or variable, how come I don't see any information on the type of the class?
Is this not a feature in IntelliJ?
For example, in vs.net, if I mouse over any variable or class it will popup and tell me what namespace that belongs to etc.
And when I am using a method of a class, it also tells me the different overloads for the method (like types for each parameter, and a list of all the overloads).
This must be a feature in IntelliJ, I just don't know how to get it.
Can someone please clear this up?
Also, how can I tidy up the formatting of a page?
It doesn't work on hover yet, please star/vote the issue.
You need to use keyboard shortcuts for quick documentation pop-up or parameter info pop-up (Ctrl+Q and Ctrl+P with default Windows keymap, F1 and Cmd+P with default OS X 10.5+ keymap).
Code | Reformat Code... is the answer to your second question.
Formatting: Code -> Reformat (shortcut: Ctrl-Alt-L)
Hover doesn't produce the kind of information I'd like either. You can get info with Ctrl-Q ("Quick Help") in Windows or F1 in OS X, which will show where it's from and what it is, with most stuff in the popup window linked up in a reasonable way.
That popup view can also be pinned and/or docked; I often have it docked on the bottom.
I use what I think is a typical layout in Eclipse: my workspace contains the Project Explorer on the left and the Java editor window taking up most of the screen, with the small console window at the foot of this editor pane.
When I open a very long Java class, containing a large number of method definitions, in the editor pane, it can take a long time to move between methods. I use CTRL-F to open the Find dialog and then type in the name of the method if I can remember it.
Is there a better way to navigate between method definitions in a large class in Eclipse?
Ctrl+O will open a dialog with the methods (and variables) list. It supports "advanced" :-) searching so you can just type a few letters of the method's name
Use the Outline View.
I use a layout much like yours but I keep the Outline panel open in it beneath the project/package explorer. This makes it easy to see the project's outline as well as the current editor's outline at a glance.
In addition to the Ctrl+O option for a quick outline, one can type (on a Mac) Cmd-Alt-Q then O to focus the Outline view. Once focus is in the Outline view, you can use the arrow keys or letter keys to navigate through the list of methods.
Cmd-Alt-Q is useful for opening many of the views. In my Eclipse Helios right now, a momentary delay after playing the chord presents a quick list of many different views, many of which have their own hot key.
Finally, you can use the "Next/Previous member" chord to jump to the previous or next method definition in the file. Again in my Helios build, the Next member key is Ctrl-Alt-down . Yours may be different.
To find out what the keystrokes are in your Eclipse build, open the eclipse preferences. Use the searcher to search for 'keys'. Open the configuration for Keys . Then in the keys search bar look for "member". There should be an item for "Next member" with a bound shortcut key/chord. Browsing the list of hotkeys is a great way to improve Eclipse productivity in the long run ;)