Package org.jboss.util

Class Objects

  • public final class Objects
extends java.lang.Object
    A collection of Object utilities.

    • Constructor Summary

      Constructors 
      Constructor Description
      Objects()  

    • Method Summary

      All Methods Static Methods Concrete Methods 
      Modifier and Type Method Description
      static java.lang.Object copy​(java.io.Serializable obj)
      Copy an serializable object deeply.
      static java.lang.Object deref​(java.lang.Object obj)
      Dereference the given object if it is non-null and is an instance of Reference.
      static <T> T deref​(java.lang.Object obj, java.lang.Class<T> expected)
      Dereference an object
      static boolean equals​(java.lang.Object[] a, java.lang.Object[] b)
      Test the equality of two object arrays.
      static boolean equals​(java.lang.Object[] a, java.lang.Object[] b, boolean deep)
      Test the equality of two object arrays.
      static boolean equals​(java.lang.Object first, java.lang.Object second)
      Test the equality of two objects.
      static java.lang.reflect.Constructor getCompatibleConstructor​(java.lang.Class type, java.lang.Class valueType)
      Get a compatible constructor for the given value type
      static boolean isArray​(java.lang.Object obj)
      Check if the given object is an array (primitve or native).
      static java.lang.Object[] toArray​(java.lang.Object obj)  

      • Methods inherited from class java.lang.Object

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

    • Constructor Detail

      • Objects

        public Objects()

    • Method Detail

      • getCompatibleConstructor

        public static java.lang.reflect.Constructor getCompatibleConstructor​(java.lang.Class type,
                                                                     java.lang.Class valueType)
        Get a compatible constructor for the given value type
        Parameters:
        type - Class to look for constructor in
        valueType - Argument type for constructor
        Returns:
        Constructor or null

      • copy

        public static java.lang.Object copy​(java.io.Serializable obj)
                             throws java.io.IOException,
                                    java.lang.ClassNotFoundException
        Copy an serializable object deeply.
        Parameters:
        obj - Object to copy.
        Returns:
        Copied object.
        Throws:
        java.io.IOException
        java.lang.ClassNotFoundException

      • deref

        public static java.lang.Object deref​(java.lang.Object obj)
        Dereference the given object if it is non-null and is an instance of Reference. If the object is null then null is returned. If the object is not an instance of Reference, then the object is returned.
        Parameters:
        obj - Object to dereference.
        Returns:
        Dereferenced object.

      • deref

        public static <T> T deref​(java.lang.Object obj,
                          java.lang.Class<T> expected)
        Dereference an object
        Type Parameters:
        T - the expected type
        Parameters:
        obj - the object or reference
        expected - the expected type
        Returns:
        the object or null

      • isArray

        public static boolean isArray​(java.lang.Object obj)
        Check if the given object is an array (primitve or native).
        Parameters:
        obj - Object to test.
        Returns:
        True of the object is an array.

      • toArray

        public static java.lang.Object[] toArray​(java.lang.Object obj)
        Parameters:
        obj - Object to convert to an array. Converts primitive arrays to Object arrays consisting of their wrapper classes. If the object is not an array (object or primitve) then a new array of the given type is created and the object is set as the sole element.
        Returns:
        an Object array for the given object.

      • equals

        public static boolean equals​(java.lang.Object[] a,
                             java.lang.Object[] b,
                             boolean deep)
        Test the equality of two object arrays.
        Parameters:
        a - The first array.
        b - The second array.
        deep - True to traverse elements which are arrays.
        Returns:
        True if arrays are equal.

      • equals

        public static boolean equals​(java.lang.Object[] a,
                             java.lang.Object[] b)
        Test the equality of two object arrays.
        Parameters:
        a - The first array.
        b - The second array.
        Returns:
        True if arrays are equal.

      • equals

        public static boolean equals​(java.lang.Object first,
                             java.lang.Object second)
        Test the equality of two objects. They can be an (multi dimensional) array.
        Parameters:
        first - the first obejct
        second - the second object
        Returns:
        true if equal, false otherwise