Basic Bean Use in JSP

• Format

  • <jsp:useBean id="name" class="package.Class" />

• Purpose

  • Allow instantiation of Java classes without explicit Java programming (XML-compatible syntax)

• Notes

  • Simple interpretation: JSP action<jsp:useBean id="book1" class=”myBeans.Book" />can be thought of as equivalent to the scriptlet<% myBeans.Book book1 = new myBeans.Book(); %>
  • But useBean has two additional advantages:
    • It is easier to derive object values from request parameters
    • It is easier to share objects among pages or servlets

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