Configuring Eclipse for Remote Debugging
In the Debug Configuration frame, specify a name for the debug
configuration. Select the project that is to be debugged, namely
the EclipseJBoss project previously created in the
Eclipse IDE. Select the default value for Connection Type. In the
Connection Properties, specify localhost as the Host
and specify the Port as the port that was specified in the
run batch script of the JBoss server, 8787.
Click on the Apply button to add the remote Java application debug
configuration, as shown in Figure 13.
Figure 13. JBoss debug configuration
Next, add exception breakpoints to the JBossServlet.java
file. Earlier, we added a NullPointerException to
JBossServlet. To add a breakpoint to the servlet class,
select Run -> Add Java Exception Breakpoint, as shown in Figure
14.
Figure 14. Adding Java exception breakpoint
In the Add Java Exception Breakpoint frame, select the
NullPointerException, as shown in Figure 15. The
NullPointerException breakpoint gets added to the
servlet class.
Figure 15. NullPointerException breakpoint
If a NullPointerException is generated in the
servlet application in the JBoss server, the application gets
suspended and the Debug perspective of the Eclipse IDE displays the
exception.
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