What does it mean by ${ } dollor and brackets in jsp?

Question

I saw this in jsp file, guessed it brought something in. Where does this come from? DB? another source of jsp file? or some scripts?

Duplicate of [What does ${} means in jsp?](http://stackoverflow.com/questions/5736842/what-does-means-in-jsp) — , Jun 30 '14 at 02:58

score 3 · Accepted Answer · answered Jun 30 '14 at 01:15

the ${} is a symbol for Java Expression Language

you can check the documentation at Oracle

quote from Oracle :

EL can :

Dynamically read application data stored in JavaBeans components, various data structures, and implicit objects

Dynamically write data, such as user input into forms, to JavaBeans components

Invoke arbitrary static and public methods

Dynamically perform arithmetic operations

score 1 · Answer 2 · edited May 23 '17 at 10:32

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This is the Java Expression Language, you can check more info and examples about it in this tag page

edited May 23 '17 at 10:32

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answered Jul 01 '14 at 04:47

fujy

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What does it mean by ${ } dollor and brackets in jsp?

2 Answers2