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
