notEmpty - Evaluate the nested body content of this tag if the requested variable is neither null, nor an empty string, nor an empty java.util.Collection (tested by the .isEmpty() method on the java.util.Collection interface).

This tag evaluates its nested body content only if the specified value is present (i.e. not null) and is not an empty string (i.e. a java.lang.String with a length of zero).

JSTL: The equivalent JSTL tag is <c:if> using the ! empty operator. For example,
<c:if test="${ ! empty sessionScope.myBean.myProperty}"> do something </c:if>

Attribute Name Description
name

The variable to be compared is the JSP bean specified by this attribute, if property is not specified, or the value of the specified property of this bean, if property is specified.

[RT Expr]
property

The variable to be compared is the property (of the bean specified by the name attribute) specified by this attribute. The property reference can be simple, nested, and/or indexed.

[RT Expr]
scope

The bean scope within which to search for the bean named by the name property, or "any scope" if not specified.

[RT Expr]