New Eclipse hierarchical package presentation is partially broken - eclipse

With the new Eclipse release 2022-03 some (but not all) java projects changed appearance in the Project Explorer view. Although Package Presentation is set to Hierarchical, the Project Explorer view still displays long/full package names instead of showing them as a tree of sub-directories (see the screenshot)
I can't find any reference as to how to control this behavior. This also seems to be project specific as half of my existing projects in the same workspace do not exhibit this behavior and display the package hierarchy as expected like directories (see below)
I just can't find a way to control this.

It seems an Eclipse bug as referred by #greg-449.
Until a fix is provided, the following worked for me as workaround:
open the project properties
select "Project Natures"
remove "Eclipse Faceted Project Properties"

Related

Why does Eclipse project explorer shows complete path on every level

Directly after the upgrade to the latest version of Eclipse (4.23) the project explorer behaves abnormal. It shows the complete package path on every package hierarchy level.
The first image shows the abnormal view the second the expected view. As you can imagine with many hierarchy levels the view becomes quite confusing.
I've tried to change the package presantation, the project presentation and almost all other options in the project explorer view menu to no avail.
I assume this is a bug and will be fixed. Maybe someone has a workaround?

Eclipse to IntelliJ transfer

I have copied my src package structure from eclipse to intellij and it makes this structure within src folder:
How do I make it dz1.drugi so I can one click expand all to my classes?
Another question is how to select default project folder as it is "workspace" at \Users\{Name} for eclipse. Right now, when I create new project like this:
it saves it without workspace (or projects folder) at \Users\{Name}.
Click on the cog icon at the top-right of the explorer view, and check the "Flatten packages" option.
That said, If you get used to keyboard shortcuts top open classes and files, and navigate through recently opened files, you'll quickly see that you'll amost never use the explorer view anymore.
Project view has an option to compact empty middle packages, enable it. You can also use Flatten packages option. Actually, your question is a duplicate of this one.
IntelliJ IDEA remembers the last location you've used when creating a new project. Once you want to create another project, the location one level upper of the previous project directory would be suggested. So, create a project in C:\Users\someuser\workspace\myproject1 and IDE will suggest C:\Users\someuser\workspace\myproject2 for your new myproject2.

PyDev: project not visible

I was using PyDEV without issue but recently when I create a project in Eclipse the project is not visible in the PyDev perspective but is visible in the Java perspective. My project is a python project. It seems that the perspectives are a little mixed up.
Is there a way to fix this?
My solution was:
Going to PyDev Package Explorer
Click View Menu button (arrow pointing down, top left area of the Package Explorer panel)
Top Level Elements
Click Projects
Maybe you added some filter which is hiding it in the PyDev package explorer?
I.e.: have you tried going to the PyDev package explorer filters (in PyDev package explorer > Ctrl+F10 > Customize View).
Or maybe you set the top-level to working sets and don't have a working set on PyDev? (i.e.: Ctrl+F10 > top level elements)
Or maybe you selected a working set which has nothing? (i.e.: Ctrl+F10 > select working set)
I know this is an old question, but I've had to deal with this specific problem in Eclipse 4 Luna, and I have an idea for what's wrong.
Use Package Explorer instead of PyDev Package Explorer.
The native Package Explorer, when in working set view, appears to automatically create and populate the working set "Other Projects." PyDev's explorer does not appear to do this, at least not on my default Luna installation. As well, PyDev's assignment of projects to working sets appears broken on Eclipse 4 Luna, so users of PyDev Package Explorer may have trouble finding their projects between views.
Enable Package Explorer:
- Window -> Show View -> Package Explorer
If Package Explorer not in menu:
Window -> Customize Perspective
Click the Menu Visibility tab.
Expand Window
Expand Show View
Find Package Explorer and put a check in it.
OK
Click Window then Show View, choose Package Explorer and rejoice.
I hope this helps at least one of you. I'm terribly new to Eclipse, and it is probably the single most unfriendly thing I've ever had to use. Good luck!
I had the same problem. Newly created projects did not show up. This is what brought me to this question. While looking at the answer provided by #alecor_Dev, which does not answer to the question, at least in my case, I managed to solve mine.
If you have a working set created and selected new projects will not show up. The easiest way to test is to go to:
PyDev Package Explore->View Menu button (pointing down)-> Deselect Working Set.
If you has a working set but more projects in that workspace more projects will show up.
If you want to keep the view clean you can go back to your working set but add the new project by editing the working set:
PyDev Package Explore->View Menu button (pointing down)-> Edit Active Woking Set.
And click on the project you want to add or remove.
I hope that this will help other with similar issues. While working set are a convenient way to declutter the view, can add to confusion.
I Suggest to #Fabio Zadrozny to add some visible way of marking that we are working inside a working set.
I hope that #medPhys-pl can confirm this although he moved to LiClipse. Obviously, there can be other causes that can create this kind of behaviour, but the initial description of the problem seems very similar to mine and I hope that it will solve other people's issues.

Where is the JTree definition for eclipse's Project Explorer?

The JTree implementation / Renderer used in eclipse (see the navigation pane on the left side) is extremely good. I've checked out the eclipse source code and am looking through it, but can't seem to find the reference to the JTree used.
Does anyone know which package contains the definition of this pane?
Thanks!
Eclipse is based on SWT, not Swing. Google "SWT Tree", for example: http://www.java2s.com/Code/Java/SWT-JFace-Eclipse/SWTTreeWithMulticolumns.htm

Eclipse 3.4.1 - how to view compiler output in Console while building a project

I have what appears to be a very annoying problem. When compiling a project in Eclipse, I see no Console that shows the invocation of the Java compiler and the build results (as in NetBeans).
If I, for instance, import an existing project into Eclipse and invoke Project->Build Project, is there a view that will show me results of the compilation? While I know that my project contains a number of files that have errors, invoking Build Project shows no visual result/progress of the compilation. It does not show the list of errors so that I can quickly jump to them.
I'm aware that there is a "Problems" view, which shows a list of problems (and not just compiler errors) in all projects and not the particular project that I am working with, which makes it very inconvenient to locate and jump to source of the problem.
You can configure the problem view to show only problems in the current project:
Click on the small triangle at the far right of the view.
In the popup menu, select "Configure Contents..."
Select each item in the "Configurations" list and click on "Scope: On any element in the same project"
If you want to see the compiler working, you need open the "Progress" view.
Since Eclipse JDT provides its own built-in Java compiler, you generally do not see the invocation of Java Compiler.
The built-in Java compiler is tightly integrated with Eclipse and JDT, and provides the source indexing that enables powerful IDE features such as refactoring and quick fix.
Plus, it enables incremental build in background after each file modification, hence no visible "java" invocation.
You can replace/complete the java compiler with a javac` call of your own:
For instance, Using Alcatel-Lucent nmake with Eclipse JDT does precisely that, and uses a configuration launcher (which you can instruct to show a console):
You will need to add that special builder in the "builder" section of your project.
Do not forget you can create many "Problem view", and set one of them to show only problems for your current project.
Select: "on any element in same project"
Goto Windows->Show View->Console
or
Alt+Shift+Q,C
Console appears in tab with Problem view
Your question contains a couple of assumptions that you might want to re-think.
It does not show the list of errors so that I can quickly jump to them.
Errors are flagged in the edit window while you are editing. You can fix them on the spot, without having to "jump" anywhere.
If you drop an entire source file into your project, you may not be in an edit window on that file. (And, of course, that's not standard Eclipse usage.) The simplest way I know do deal with that is simply to "Refresh" the project and look in the Package Explorer view to see whether there are any errors detected (which will happen immediately if you "refresh" a file into a source folder). Double-click on any files which show an error icon and look at the right-hand side of the edit window to see exactly where the errors are.
I'm aware that there is a "Problems" view, which shows a list of problems (and not just compiler errors) in all projects and not the particular project that I am working with...
Unless you are using multiple projects, with inter-project dependencies, I find it useful to close all but the current project on which I'm working. Then the "Problems" view is specific to the current context.
Finally, I'd recommend looking at the Mylin "getting started" page for other hints on how Eclipse can help you focus on the current task.