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When you  add a new JRE in the JRE configuration dialog,
a file chooser is brought up and prompts you for the selection of the home directory of the JVM (e.g.
c:\Program Files\Java\jre or /usr/lib/java). The selected
virtual machine will be checked for usability by JProfiler and depending on success,
a new entry in the JRE table is added.
The table that shows the configured JREs has several columns:
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Double-click on the "Name" column to change the name of the JRE configuration. This name
is used for JRE selection in the
application settings dialog.
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Double-click on "Java home directory" and enter a directory manually or click
on the button labeled [...] to change the home directory of
an existing JRE configuration. The new directory will be accepted only if the directory contains
a JVM which is usable by JProfiler.
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Choose the JVM Mode from the "JVM Mode" combo box. This setting is initially
set to the preferred value for the chosen JVM. See the
remote session invocation table
for details on this option.
If you  delete an existing JRE configuration,
all sessions which currently use the deleted JVM will remain without an associated JVM and will be unusable
until you assign them a new one in the
application settings dialog.
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search
button on the right hand side of the dialog. This invokes the search wizard which corresponds to the functionality found in
JProfiler's setup wizard. The search wizard shows all JREs found on your local fixed drives, but only new JREs
will be merged into the JRE table.