Java editor

Toolbar actions

Toolbar actions

Button

Command

Description

Show Source of Selected Element Only

Show Source of Selected Element Only

This option can be toggled to display a segmented view of the source of the selected Java element. This button applies to the currently-active editor and to all editors opened in the future; other currently-open editors are not affected.

For example, if a method is selected in the Outline view, the Show Source Of Selected Element Only option causes only that method to be displayed in the editor, as opposed to the entire class.

Off:
The entire compilation unit is displayed in the editor, with the selected Java element highlighted in the marker bar with a range indicator.
On:
Only the selected Java element is displayed in the editor, which is linked to the selection in the Outline or Hierarchy view.

Show Text Hover

Show Text Hover

This option can be toggled to display or hide hover help for Java elements in the editor. This button applies to the currently-active editor and to all editors opened in the future; other currently-open editors are not affected.

The hover help that is controlled with this button displays Javadoc information for the type, method, or other Java element underneath the cursor.

Hover example

Show Next Problem

Show Next Problem

This command navigates to the next problem marker in the active editor.

Show Previous Problem

Show Previous Problem

This command navigates to the previous problem marker in the active editor.

Key binding actions

The following actions can only be reached through key bindings. The Key bindings field in Window > Preferences > Workbench > Editors must be set to 'Emacs'.

Key binding

Description

Alt+0 Ctrl+K,
Esc 0 Ctrl+K

Deletes from the cursor position to the beginning of the line.

Ctrl+K

Deletes from the cursor position to the end of the line.

Ctrl+Space,
Ctrl+2

Sets a mark at the current cursor position.

Ctrl+X Ctrl+X

Swaps the cursor and mark position if any.

Related concepts

Java editor

Related tasks

Using the Java editor

Viewing documentation and information
Showing single elements or whole Java files
Opening an editor for a selected element

Related reference

Outline view for Java
Java editor preferences
JDT actions
Views and editors