# Hierarchy For Package org.zkoss.xel

Package Hierarchies:

- All Packages

## Class Hierarchy

- java.lang.Object
  - org.zkoss.xel.Expressions
  - java.lang.Throwable (implements java.io.Serializable)
    - java.lang.Exception
      - java.lang.RuntimeException
        - org.zkoss.lang.SystemException (implements org.zkoss.mesg.Messageable)
          - org.zkoss.xel.XelException
  - org.zkoss.xel.XelException.Aide

## Interface Hierarchy

- org.zkoss.xel.Expression
  - org.zkoss.xel.ExpressionX
- org.zkoss.xel.ExpressionFactory
- org.zkoss.xel.Function
- org.zkoss.xel.FunctionMapper
- org.zkoss.xel.FunctionMapperExt
- org.zkoss.xel.ValueReference
- org.zkoss.xel.VariableResolver
  - org.zkoss.xel.VariableResolverX
- org.zkoss.xel.XelContext