Java Preferences

The following Java preferences can be set on the Opens the Java preference page Java preference page and its sub-pages.

Option

Description

Default

Action on double click in the Package Explorer
Go into the selected element
When you double click a container, a Go Into command is executed.
See Go Into from the Navigate menu.
Expand the selected element
When you double click a container, it is expanded and its children are revealed.
Expand the selected element
When opening a Type Hierarchy
Open a new Type Hierarchy Perspective
Opens a new Type Hierarchy perspective whenever a Type Hierarchy view is opened.
Show the Type Hierarchy View in the current perspective
The Type Hierarchy view is displayed in the current perspective.
Note: On the Workbench preferences page, you can choose whether new perspectives open in a new window, in the current window, or as a replacement for the current perspective.
Show the Type Hierarchy View in the current perspective
Refactoring Java code
Save all modified resources automatically prior to refactoring
If this option is turned off, refactorings may prompt to save modified files if required. If it is turned on, all modified files are saved without prompting prior to opening a refactoring wizard.
Off
 
Rename in editor without dialog
If this option is turned on, then the rename refactoring will not show a dialog if invoked inside a Java editor. Instead the new name for the element to rename can be typed into the editor right away.
On
Search
Use reduced search menu
If this option is turned on, the search context menus show only the most frequently used search actions.
On
Search
Enable new Java index
If this option is turned on, Eclipse will build and use a new index for accelerating many Java operations. This will reduce the number of UI freezes but will consume additional memory and disk space.
Off
Search
Rebuild Index
Pressing this button will delete all information cached in the Java index. This can be used to save disk space since the rebuilt index is often smaller than the original. It can also be used to fix index corruption in cases where types appear to be missing from the UI.
Java dialogs
Clear all 'do not show again' settings and show all hidden dialogs again
If pressed, all 'do not show' settings are cleared.
Button

Related concepts

Java views

Related reference

Package Explorer view
Type Hierarchy view