JDB - Options

This chapter describes the important options available in JDB that are submitted as arguments with the jdb command.

Options

The following table contains a list of options accepted by JDB:

Name	Description
-help	Displays the help message and lists the related options.
-sourcepath	Uses the given path for source files if path is not specified, then it takes the default path “.”, i.e., the current directory.
-attach	Attaches the debugger to the running VM by specifying the running VM address.
-listen	Waits for the running VM to connect using standard connector.
-listenany	Waits for the running VM to connect using any address.
-launch	Launches the debugged application immediately up on startup job.
-listconnectors	Lists the connectors available in this VM.
-connect	Connects to the target VM using named connector with listed argument values.
-dbgtrace	Prints information for debugging jdb.
-tclient	Runs the application in Java Hotspot VM (client).
-tserver	Runs the application in Java Hotspot VM (server).
-Joption	Passes the option to the Java virtual machine used to run JDB.

Using Options with Commands

The following commands show how to use some of the above options:

-help

The following command gets -help on using JDB.

\>jdb -help

-attach

The following command attaches the debugger to a specified VM (port number:1099).

\> jdb -attach 1099

-listen

The following command makes the JDB process running on the current VM wait using standard connector (VM in 8008).

\>jdb -listen 8088

-listenany

The following command makes the JDB process running on the current VM wait using any connector (VM in currently running port).

\>jdb –listenany

-tclient

The following command executes the application in Java Hotspot(™) VM(client).

\>jdb –tclient

-tserver

The following command executes the application in Java Hotspot(™) VM(server).

\>jdb -tserver