IntelliJ IDEA 2019.1 Help

Debug Tool Window. Threads

The Threads pane shows all threads of a process as a tree view, and allows exploring them, customizing thread view, and exporting to a file.

Thread Status

Thread status



The thread is active and running.


The thread is waiting for a monitor.


The status of the thread cannot be determined.

Threads Icons



icons debugger threadGroup

A thread group, or a collection of related threads that can be managed as a unit.

icons debugger threadGroupCurrent

The current thread group.

icons debugger threadRunning

An active thread.

icons debugger threadSuspended

A suspended thread.

icons debugger threadFrozen

A frozen thread.

icons debugger threadAtBreakpoint

A thread at breakpoint.

icons debugger threadCurrent

The current thread at breakpoint.

Context menu options




Select this option to suspend the selected thread. When a thread is suspended, this menu option toggles to Resume.


Use this command to interrupt the active thread.

Drop Frame

Use this command to drop the selected frame, that is go back in time while debugging. This option is only available if there are two or more frames.

Add Stepping Filter

Use this command to add a stepping filter in the dialog that opens.

icons toolbarDecorator export svg Export Threads

Use this item to open the Export Threads dialog that allows you to export a thread to the specified text file.

Customize Threads View

Use this item to manage contents of the Frames tab. For example, you can opt to show thread groups, line numbers and so on. Refer to the dialog description for details.



Shortcut and Tooltip


icons actions previousOccurence svg icons actions nextOccurence svg

Previous Frame/Next Frame Ctrl+Alt+Up/

Use the arrow buttons to navigate through the frame stack.

icons general filter svg

Hide Frames from Libraries

Click this button to hide frames from libraries. If this button is released, all frames are displayed.

Last modified: 20 June 2019

See Also