how to generate java heap dump from tomcat 5.0.27

[Guan Yu]

i need to generate java heap dump to trace memory leak in our web application. 
We are using tomcat 5.0.27.
I added "-agentlib:hprof=heap=dump,format=b,file=D:/java.hprof" to Java Options 
using "Configure Tomcat". Is this the correct method? How do I continue from 
here? 
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