IntelliJ IDEA 2016.2 Help


File | Settings | Build, Execution, Deployment | Debugger for Windows and Linux
IntelliJ IDEA | Preferences | Build, Execution, Deployment | Debugger for OS X

Use this page to configure behavior of the Debugger and customize its view.

Common options

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 breakpointIs 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 centerIf this check box is selected, the line with the current execution point will be kept in the middle of the screen.


TransportSelect 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 earlierCheck this option to launch process to be debugged with classic VM.
Disable JITWith this option you can control whether the -Djava.compiler=NONE 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 switcherThe alternative source switcher appears on top of the editor, if in project there is more than one class with the same fully qualified name.

Built-in server

PortUse 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 connectionsIf this check box is selected, then the files launched on the built-in server running on the specified port, are accessible from a different computer. If this check box is not selected (by default), then only local connections are listened to.
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.

See Also

Last modified: 5 September 2016