I'm spending a lot of time manually expanding deeply-nested folders in tree views like the Project Explorer and the File Search result tree. Is there a keyboard shortcut or menu command to expand all folders?
In "File Seach Result", right click on the top level folder, there is an "expand all" menu entry.
In the project view, I didn't find the feature.
In Windows:
Expand all all in project explorer is Shift+Numpad * (multiplty), as mentioned before. Collapse all in project explorer is Ctrl+Shift+Numpad - (subtract).
Alternatively, you can just jam on the right arrow to expand to the bottom of a selected tree, or jam on the left arrow to collapse back up to the top.
If you want to see all the shortcuts available for the particular context you are in, type Ctrl+Shift+L.
On Mac: Select a folder and press Alt+ARROW_RIGHT. That should expand all subfolders in the file explorer of eclipse.
Eclipse on Linux:
SHIFT + RIGHT arrow
Expand all folders below the selected folder. If you do it multiple times, next set of folders expand.
SHIFT + LEFT arrow
Collapses all folders below the selected folder.
Eclipse on Windows:
Right arrow -->> Expand
Left arrow -->> Collapse
Mars.1 Release (4.5.1), Linux (RHEL 6.7)
Expand Folders
Tap * once for each level that all folders under the selected folder should be expanded. For example, tapping * three times will expand all folders out to three levels.
(CTRL SHIFT Numpad * doesn't work for me as it should with this particular build/machine.)
Collapse All Folders
Tap Numpad / once to collapse all folders under the selected folder.
Expand/Collapse Single Folders
Shift + Right Arrow
Shift + Left Arrow
If you want to simply search a file anywhere: CTRL + SHIFT + R (Faster workspace navigation)
Collapse All: Shift + NUM-KEYPAD-MULTIPLY (*) -->Use with caution, if you do it on a large project, ALL the files will be expanded! Just managed to crash my Eclipse!
In Windows: ( I'm using STS v2.8 based on Eclipse 3.7, maybe a little different... )
in Project/Package Explorer:
Expand all : Shift + Numpad *
Collpse all: Ctrl + Shift + Numberpad_Divide, or just click the small "-" icon at the top right of current view.
But from wat I can see, Expand All action always make the Eclipse/STS not responding (e.x, we may set class files - compiled or in JARs - visible in current view, which cause too many file to be expanded), so maybe it's better to select specified package first.
Also these shortcuts very helpful to locate files:
Ctrl + Shift + R: open resource ( all file types, java, jsp, jspf, properties ...), it's my most frequent use and favorite shortcut;
Ctrl + Shift + T: open type ( for Java files only)
In Search result tab, there are Expand All(+ sign with border) and Collapse All(- sign with border) icons at the top right of the tab.
Shift + Right arrow, repeatedly.
Following works for Eclipse 4.4 on Linux:
Pressing * (or shift+→) repeatedly while a folder is selected expands it's contents.
Pressing - (or shift+←) collapses all content.
shift + * Expand ALl
Shift _ - Collapse All
that's it.
Disable Focus on Active Task option - shown below.
来源：https://stackoverflow.com/questions/3159791/is-there-way-to-expand-all-folders-in-eclipse-project-view-and-search-results