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## javax.management.openmbean
Interface OpenMBeanParameterInfo

All Known Subinterfaces:
  OpenMBeanAttributeInfo

All Known Implementing Classes:
  OpenMBeanAttributeInfoSupport, OpenMBeanParameterInfoSupport

    public interface OpenMBeanParameterInfo

Describes a parameter used in one or more operations or constructors of an open MBean.

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

Since:
  1.5

Method Summary
`boolean` | `equals(Object obj)` Compares the specified obj parameter with this `OpenMBeanParameterInfo` instance for equality.
`Object` | `getDefaultValue()` Returns the default value for this parameter, if it has one, or `null` otherwise.
`String` | `getDescription()` Returns a human readable description of the parameter described by this `OpenMBeanParameterInfo` instance.
`Set<?>` | `getLegalValues()` Returns the set of legal values for this parameter, if it has one, or `null` otherwise.
`Comparable<?>` | `getMaxValue()` Returns the maximal value for this parameter, if it has one, or `null` otherwise.
`Comparable<?>` | `getMinValue()` Returns the minimal value for this parameter, if it has one, or `null` otherwise.
`String` | `getName()` Returns the name of the parameter described by this `OpenMBeanParameterInfo` instance.
`OpenType<?>` | `getOpenType()` Returns the open type of the values of the parameter described by this `OpenMBeanParameterInfo` instance.
`boolean` | `hasDefaultValue()` Returns `true` if this parameter has a specified default value, or `false` otherwise.
`int` | `hashCode()` Returns the hash code value for this `OpenMBeanParameterInfo` instance.
`boolean` | `hasLegalValues()` Returns `true` if this parameter has a specified set of legal values, or `false` otherwise.
`boolean` | `hasMaxValue()` Returns `true` if this parameter has a specified maximal value, or `false` otherwise.
`boolean` | `hasMinValue()` Returns `true` if this parameter has a specified minimal value, or `false` otherwise.
`boolean` | `isValue(Object obj)` Tests whether obj is a valid value for the parameter described by this `OpenMBeanParameterInfo` instance.
`String` | `toString()` Returns a string representation of this `OpenMBeanParameterInfo` instance.

Method Detail

### getDescription

    String getDescription()

  Returns a human readable description of the parameter described by this `OpenMBeanParameterInfo` instance.

  Returns:
    the description.

### getName

    String getName()

  Returns the name of the parameter described by this `OpenMBeanParameterInfo` instance.

  Returns:
    the name.

### getOpenType

    OpenType<?> getOpenType()

  Returns the open type of the values of the parameter described by this `OpenMBeanParameterInfo` instance.

  Returns:
    the open type.

### getDefaultValue

    Object getDefaultValue()

  Returns the default value for this parameter, if it has one, or `null` otherwise.

  Returns:
    the default value.

### getLegalValues

    Set<?> getLegalValues()

  Returns the set of legal values for this parameter, if it has one, or `null` otherwise.

  Returns:
    the set of legal values.

### getMinValue

    Comparable<?> getMinValue()

  Returns the minimal value for this parameter, if it has one, or `null` otherwise.

  Returns:
    the minimum value.

### getMaxValue

    Comparable<?> getMaxValue()

  Returns the maximal value for this parameter, if it has one, or `null` otherwise.

  Returns:
    the maximum value.

### hasDefaultValue

    boolean hasDefaultValue()

  Returns `true` if this parameter has a specified default value, or `false` otherwise.

  Returns:
    true if there is a default value.

### hasLegalValues

    boolean hasLegalValues()

  Returns `true` if this parameter has a specified set of legal values, or `false` otherwise.

  Returns:
    true if there is a set of legal values.

### hasMinValue

    boolean hasMinValue()

  Returns `true` if this parameter has a specified minimal value, or `false` otherwise.

  Returns:
    true if there is a minimum value.

### hasMaxValue

    boolean hasMaxValue()

  Returns `true` if this parameter has a specified maximal value, or `false` otherwise.

  Returns:
    true if there is a maximum value.

### isValue

    boolean isValue(Object obj)

  Tests whether obj is a valid value for the parameter described by this `OpenMBeanParameterInfo` instance.

  Parameters:
    `obj` - the object to be tested.
  Returns:
    `true` if obj is a valid value for the parameter described by this `OpenMBeanParameterInfo` instance, `false` otherwise.

### equals

    boolean equals(Object obj)

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

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

  - obj is non null,
  - obj also implements the `OpenMBeanParameterInfo` interface,
  - their names are equal
  - their open types 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 `OpenMBeanParameterInfo` interface.

  Overrides:
    `equals` in class `Object`
  Parameters:
    `obj` - the object to be compared for equality with this `OpenMBeanParameterInfo` instance;
  Returns:
    `true` if the specified object is equal to this `OpenMBeanParameterInfo` instance.
  See Also:
    `Object.hashCode()`, `Hashtable`

### hashCode

    int hashCode()

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

  The hash code of an `OpenMBeanParameterInfo` 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 `OpenMBeanParameterInfo` instances `t1` and `t2`, as required by the general contract of the method `Object.hashCode()`.

  Overrides:
    `hashCode` in class `Object`
  Returns:
    the hash code value for this `OpenMBeanParameterInfo` instance
  See Also:
    `Object.equals(java.lang.Object)`, `Hashtable`

### toString

    String toString()

  Returns a string representation of this `OpenMBeanParameterInfo` instance.

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

  Overrides:
    `toString` in class `Object`
  Returns:
    a string representation of this `OpenMBeanParameterInfo` instance

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