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Java Standard Edition (SE)

ObjectInstance


compact3
javax.management

Class ObjectInstance

  • All Implemented Interfaces:
    Serializable


    public class ObjectInstance
    extends Object
    implements Serializable
    Used to represent the object name of an MBean and its class name. If the MBean is a Dynamic MBean the class name should be retrieved from the MBeanInfo it provides.
    Since:
    1.5
    See Also:
    Serialized Form
    • Constructor Detail

      • ObjectInstance

        public ObjectInstance(String objectName,
                              String className)
                       throws MalformedObjectNameException
        Allows an object instance to be created given a string representation of an object name and the full class name, including the package name.
        Parameters:
        objectName - A string representation of the object name.
        className - The full class name, including the package name, of the object instance. If the MBean is a Dynamic MBean the class name corresponds to its getMBeanInfo().getClassName().
        Throws:
        MalformedObjectNameException - The string passed as a parameter does not have the right format.
      • ObjectInstance

        public ObjectInstance(ObjectName objectName,
                              String className)
        Allows an object instance to be created given an object name and the full class name, including the package name.
        Parameters:
        objectName - The object name.
        className - The full class name, including the package name, of the object instance. If the MBean is a Dynamic MBean the class name corresponds to its getMBeanInfo().getClassName(). If the MBean is a Dynamic MBean the class name should be retrieved from the MBeanInfo it provides.
    • Method Detail

      • equals

        public boolean equals(Object object)
        Compares the current object instance with another object instance.
        Overrides:
        equals in class Object
        Parameters:
        object - The object instance that the current object instance is to be compared with.
        Returns:
        True if the two object instances are equal, otherwise false.
        See Also:
        Object.hashCode(), HashMap
      • hashCode

        public int hashCode()
        Description copied from class: Object
        Returns a hash code value for the object. This method is supported for the benefit of hash tables such as those provided by HashMap.

        The general contract of hashCode is:

        • Whenever it is invoked on the same object more than once during an execution of a Java application, the hashCode method must consistently return the same integer, provided no information used in equals comparisons on the object is modified. This integer need not remain consistent from one execution of an application to another execution of the same application.
        • If two objects are equal according to the equals(Object) method, then calling the hashCode method on each of the two objects must produce the same integer result.
        • It is not required that if two objects are unequal according to the Object.equals(java.lang.Object) method, then calling the hashCode method on each of the two objects must produce distinct integer results. However, the programmer should be aware that producing distinct integer results for unequal objects may improve the performance of hash tables.

        As much as is reasonably practical, the hashCode method defined by class Object does return distinct integers for distinct objects. (This is typically implemented by converting the internal address of the object into an integer, but this implementation technique is not required by the Java™ programming language.)

        Overrides:
        hashCode in class Object
        Returns:
        a hash code value for this object.
        See Also:
        Object.equals(java.lang.Object), System.identityHashCode(java.lang.Object)
      • getObjectName

        public ObjectName getObjectName()
        Returns the object name part.
        Returns:
        the object name.
      • getClassName

        public String getClassName()
        Returns the class part.
        Returns:
        the class name.
      • toString

        public String toString()
        Returns a string representing this ObjectInstance object. The format of this string is not specified, but users can expect that two ObjectInstances return the same string if and only if they are equal.
        Overrides:
        toString in class Object
        Returns:
        a string representation of the object.


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