Package org.zkoss.lang

Class Generics

  • public class Generics
extends java.lang.Object
    Utilities to handle generic types, such as converting a non-type object to a generic type without warning.
    Since:
    6.0.0
    Author:
    tomyeh

    • Constructor Summary

      Constructors 
      Constructor Description
      Generics()  

    • Method Summary

      All Methods Static Methods Concrete Methods 
      Modifier and Type Method Description
      static <T> java.lang.Class<T> cast​(java.lang.Class cls)
      Returns a type-safe generic class of the given type-less class.
      static <T> T cast​(java.lang.Object o)
      Force to cast an object to the given type.
      static <T> java.lang.ThreadLocal<T> cast​(java.lang.ThreadLocal tl)
      Returns a type-safe generic thread-local of the given un-typed thread-local.
      static <T> java.util.Collection<T> cast​(java.util.Collection col)
      Returns a type-safe generic collection of the given un-typed collection.
      static <T> java.util.Enumeration<T> cast​(java.util.Enumeration en)
      Returns a type-safe generic enumeration of the given un-typed enumeration.
      static <T> java.util.Iterator<T> cast​(java.util.Iterator it)
      Returns a type-safe generic iterator of the given un-typed iterator.
      static <T> java.util.List<T> cast​(java.util.List list)
      Returns a type-safe generic list of the given un-typed list.
      static <T> java.util.ListIterator<T> cast​(java.util.ListIterator it)
      Returns a type-safe generic list iterator of the given un-typed list iterator.
      static <K,​V>
      java.util.Map<K,​V>      		 cast​(java.util.Map map)
      Returns a type-safe generic map of the given un-typed map.
      static <T> java.util.Set<T> cast​(java.util.Set set)
      Returns a type-safe generic set of the given un-typed set.

      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

    • Constructor Detail

      • Generics

        public Generics()

    • Method Detail

      • cast

        public static final <T> java.lang.Class<T> cast​(java.lang.Class cls)
        Returns a type-safe generic class of the given type-less class.

      • cast

        public static final <T> T cast​(java.lang.Object o)
        Force to cast an object to the given type. Notice that it is not safe to use, unless you are sure that o is an instance of T.

      • cast

        public static final <T> java.util.Iterator<T> cast​(java.util.Iterator it)
        Returns a type-safe generic iterator of the given un-typed iterator.

      • cast

        public static final <T> java.util.ListIterator<T> cast​(java.util.ListIterator it)
        Returns a type-safe generic list iterator of the given un-typed list iterator.

      • cast

        public static final <T> java.util.Enumeration<T> cast​(java.util.Enumeration en)
        Returns a type-safe generic enumeration of the given un-typed enumeration.

      • cast

        public static final <T> java.util.Collection<T> cast​(java.util.Collection col)
        Returns a type-safe generic collection of the given un-typed collection.

      • cast

        public static final <T> java.util.List<T> cast​(java.util.List list)
        Returns a type-safe generic list of the given un-typed list.

      • cast

        public static final <T> java.util.Set<T> cast​(java.util.Set set)
        Returns a type-safe generic set of the given un-typed set.

      • cast

        public static final <K,​V> java.util.Map<K,​V> cast​(java.util.Map map)
        Returns a type-safe generic map of the given un-typed map.

      • cast

        public static final <T> java.lang.ThreadLocal<T> cast​(java.lang.ThreadLocal tl)
        Returns a type-safe generic thread-local of the given un-typed thread-local.