Applying probes

When you apply a probe, Probekit instruments your application by inserting probe code and calls to the probe's classes into your application's class files.

The instrumentation engine processes your application files and folders as follows

• When a class file is instrumented, the uninstrumented *.class file is copied to a file named *.class.bak, and calls to the probe's classes are inserted into the *.class file.
• When a jar file is instrumented, the uninstrumented *.jar file is copied to a file named *.jar.bak, and calls to the probe's classes are inserted into the class files inside the *.jar file.

You can apply probes either from the workbench or from the command line.

• Applying probes from the workbench
  You can apply a probe directly from within the workbench. The workbench compiles the probe automatically.
• Applying probes from the command line
  Apply a probe from the command line if you need to apply it to an external file that cannot be modified while the workbench is running. To apply a probe from the command line, you must first compile the probe manually.

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