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This is probably really simple, but I'm reading Head First: Servlet's and JSP and I understand how this works.

${person.dog.name}



Where there is an attribute of type person that has a property that is an object of type Dog that has a property that is a string which holds his name. In that case it's going to print out the person's dog's name.

What confuses me, and it's really just a side question, is how to do that with [].

This obviously doesn't work because it goes from inner most expression outwards.

${person[dog["name"]}



And prints out nothing because there is no property in the person object that has the same name as say Clifford.

Thanks for you help ahead of time. If I figure it out before anyone replies I'll post my own answer.
 
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are all equivalent.
 
Consider Paul's rocket mass heater.
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