OpenMBeanAttributeInfo (Java Platform SE 8 )
Keywords: javax.management.openmbean.OpenMBeanAttributeInfo interface
Date: 2026-01-21

compact3
javax.management.openmbean

## Interface OpenMBeanAttributeInfo

- All Superinterfaces:
    OpenMBeanParameterInfo
  All Known Implementing Classes:
    OpenMBeanAttributeInfoSupport

      public interface OpenMBeanAttributeInfo
      extends OpenMBeanParameterInfo

  Describes an attribute of an open MBean.

  This interface declares the same methods as the class `MBeanAttributeInfo`. A class implementing this interface (typically `OpenMBeanAttributeInfoSupport`) should extend `MBeanAttributeInfo`.

  Since:
    1.5

- - ### Method Summary

    All Methods Instance Methods Abstract Methods
    Modifier and Type | Method and Description
    --- | ---
    `boolean` | `equals(Object obj)` Compares the specified obj parameter with this `OpenMBeanAttributeInfo` instance for equality.
    `int` | `hashCode()` Returns the hash code value for this `OpenMBeanAttributeInfo` instance.
    `boolean` | `isIs()` Returns `true` if the attribute described by this `OpenMBeanAttributeInfo` instance is accessed through a `isXXX` getter (applies only to `boolean` and `Boolean` values), `false` otherwise.
    `boolean` | `isReadable()` Returns `true` if the attribute described by this `OpenMBeanAttributeInfo` instance is readable, `false` otherwise.
    `boolean` | `isWritable()` Returns `true` if the attribute described by this `OpenMBeanAttributeInfo` instance is writable, `false` otherwise.
    `String` | `toString()` Returns a string representation of this `OpenMBeanAttributeInfo` instance.

    - ### Methods inherited from interface javax.management.openmbean.OpenMBeanParameterInfo

      `getDefaultValue, getDescription, getLegalValues, getMaxValue, getMinValue, getName, getOpenType, hasDefaultValue, hasLegalValues, hasMaxValue, hasMinValue, isValue`

- - ### Method Detail

    - #### isReadable

          boolean isReadable()

      Returns `true` if the attribute described by this `OpenMBeanAttributeInfo` instance is readable, `false` otherwise.
      Returns:
        true if the attribute is readable.

    - #### isWritable

          boolean isWritable()

      Returns `true` if the attribute described by this `OpenMBeanAttributeInfo` instance is writable, `false` otherwise.
      Returns:
        true if the attribute is writable.

    - #### isIs

          boolean isIs()

      Returns `true` if the attribute described by this `OpenMBeanAttributeInfo` instance is accessed through a `isXXX` getter (applies only to `boolean` and `Boolean` values), `false` otherwise.
      Returns:
        true if the attribute is accessed through `isXXX`.

    - #### equals

          boolean equals(Object obj)

      Compares the specified obj parameter with this `OpenMBeanAttributeInfo` instance for equality.

      Returns `true` if and only if all of the following statements are true:

      - obj is non null,
      - obj also implements the `OpenMBeanAttributeInfo` interface,
      - their names are equal
      - their open types are equal
      - their access properties (isReadable, isWritable and isIs) are equal
      - their default, min, max and legal values are equal.
      This ensures that this `equals` method works properly for obj parameters which are different implementations of the `OpenMBeanAttributeInfo` interface.
      Specified by:
        `equals` in interface `OpenMBeanParameterInfo`
      Overrides:
        `equals` in class `Object`
      Parameters:
        `obj` - the object to be compared for equality with this `OpenMBeanAttributeInfo` instance;
      Returns:
        `true` if the specified object is equal to this `OpenMBeanAttributeInfo` instance.
      See Also:
        `Object.hashCode()`, `HashMap`

    - #### hashCode

          int hashCode()

      Returns the hash code value for this `OpenMBeanAttributeInfo` instance.

      The hash code of an `OpenMBeanAttributeInfo` instance is the sum of the hash codes of all elements of information used in `equals` comparisons (ie: its name, its open type, and its default, min, max and legal values).

      This ensures that `t1.equals(t2)` implies that `t1.hashCode()==t2.hashCode()` for any two `OpenMBeanAttributeInfo` instances `t1` and `t2`, as required by the general contract of the method `Object.hashCode()`.

      Specified by:
        `hashCode` in interface `OpenMBeanParameterInfo`
      Overrides:
        `hashCode` in class `Object`
      Returns:
        the hash code value for this `OpenMBeanAttributeInfo` instance
      See Also:
        `Object.equals(java.lang.Object)`, `System.identityHashCode(java.lang.Object)`

    - #### toString

          String toString()

      Returns a string representation of this `OpenMBeanAttributeInfo` instance.

      The string representation consists of the name of this class (ie `javax.management.openmbean.OpenMBeanAttributeInfo`), the string representation of the name and open type of the described attribute, and the string representation of its default, min, max and legal values.

      Specified by:
        `toString` in interface `OpenMBeanParameterInfo`
      Overrides:
        `toString` in class `Object`
      Returns:
        a string representation of this `OpenMBeanAttributeInfo` instance

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