File | Settings | Build, Execution, Deployment | Debugger for Windows and Linux IntelliJ IDEA | Preferences | Build, Execution, Deployment | Debugger for macOS
Use this page to configure behavior of the Debugger and customize its view.
Focus application on breakpoint
If this check box is selected, on hitting a breakpoint, IntelliJ IDEA will show the location of this
breakpoint in the editor and will attempt to bring its frame to the front.
Show debug window on breakpoint
Is this check box is selected, IntelliJ IDEA activates the Debug Tool Window on hitting a breakpoint.
Hide debug window on process termination
Automatically hide the Debug window when the
debugged program terminates.
Scroll execution point to center
If this check box is selected, the line with the current execution point will be kept in the middle of
Select transport for connection to the process. Available options are socket and
shared memory, which is available for Windows systems only.
Force classic VM for JDK 1.3.x and earlier
Check this option to launch process to be debugged with classic VM.
With this option you can control whether the
parameter is specified when the application is launched. This parameter affects JIT compiler, and if
the option is turned on, JIT compiler will be disabled.
Show alternative source switcher
The alternative source switcher appears on top of the editor, if in project there is more than one
class with the same fully qualified name.
Kill the debug process immediately
Select this check box, if you want to soft kill the Java
Use this spin box to
specify the number of the port where the built-in web server runs. The port number should be set to
1024 or higher. By default this port is set to the default IntelliJ IDEA port through which IntelliJ IDEA
accepts connections from services (63342).
Can accept external connections
If this check box is selected, then the files on the built-in server running on the specified
port, are accessible from a different computer. If this check box is cleared (by default), then
the debugger listens only to local connections.
Allow unsigned requests
For security reasons, any request to a page on the built-in server from outside IntelliJ IDEA is by default rejected and
the following authorization pop-up window is displayed:
To access the requested page, click Copy authorization URL to clipboard
and paste the generated token in the address bar of the browser.
However this behaviour may be annoying, for example, it may block your debugging session if manual intervention is impossible.
To suppress displaying the authorization pop-up window, select the Allow unsigned requests check box.