SimpleType (Java 2 Platform Ent. Ed. v1.4) - Java Platform, Enterprise Edition v1.4 API Specifications

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Java^TM 2 Platform
Ent. Ed. v1.4

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javax.management.openmbean
Class SimpleType

java.lang.Object
  javax.management.openmbean.OpenType
      javax.management.openmbean.SimpleType

All Implemented Interfaces:: Serializable

public final class SimpleType
extends OpenType
implements Serializable

The SimpleType class is the open type class whose instances describe all open data values which are neither arrays, nor CompositeData values, nor TabularData values. It predefines all its possible instances as static fields, and has no public constructor.

Given a SimpleType instance describing values whose Java class name is className, the internal fields corresponding to the name and description of this SimpleType instance are also set to className. In other words, its methods getClassName, getTypeName and getDescription all return the same string value className.

Since:: JMX 1.1
Version:: 3.13 02/10/01
Author:: Sun Microsystems, Inc.
See Also:: Serialized Form

Field Summary

static SimpleType BIGDECIMAL
          The SimpleType instance describing values whose Java class name is java.math.BigDecimal.

static SimpleType BIGINTEGER
          The SimpleType instance describing values whose Java class name is java.math.BigInteger.

static SimpleType BOOLEAN
          The SimpleType instance describing values whose Java class name is java.lang.Boolean.

static SimpleType BYTE
          The SimpleType instance describing values whose Java class name is java.lang.Byte.

static SimpleType CHARACTER
          The SimpleType instance describing values whose Java class name is java.lang.Character.

static SimpleType DATE
          The SimpleType instance describing values whose Java class name is java.util.Date.

static SimpleType DOUBLE
          The SimpleType instance describing values whose Java class name is java.lang.Double.

static SimpleType FLOAT
          The SimpleType instance describing values whose Java class name is java.lang.Float.

static SimpleType INTEGER
          The SimpleType instance describing values whose Java class name is java.lang.Integer.

static SimpleType LONG
          The SimpleType instance describing values whose Java class name is java.lang.Long.

static SimpleType OBJECTNAME
          The SimpleType instance describing values whose Java class name is javax.management.ObjectName.

static SimpleType SHORT
          The SimpleType instance describing values whose Java class name is java.lang.Short.

static SimpleType STRING
          The SimpleType instance describing values whose Java class name is java.lang.String.

static SimpleType VOID
          The SimpleType instance describing values whose Java class name is java.lang.Void.

Fields inherited from class javax.management.openmbean.OpenType

ALLOWED_CLASSNAMES

Method Summary

boolean equals(Object obj)
          Compares the specified obj parameter with this SimpleType instance for equality.

int hashCode()
          Returns the hash code value for this SimpleType instance.

boolean isValue(Object obj)
          Tests whether obj is a value for this SimpleType instance.

Object readResolve()
          Replace an object read from an ObjectInputStream with the unique instance for that value.

String toString()
          Returns a string representation of this SimpleType instance.

Methods inherited from class javax.management.openmbean.OpenType

getClassName, getDescription, getTypeName, isArray

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

VOID

public static final SimpleType VOID

The SimpleType instance describing values whose Java class name is java.lang.Void.

BOOLEAN

public static final SimpleType BOOLEAN

The SimpleType instance describing values whose Java class name is java.lang.Boolean.

CHARACTER

public static final SimpleType CHARACTER

The SimpleType instance describing values whose Java class name is java.lang.Character.

BYTE

public static final SimpleType BYTE

The SimpleType instance describing values whose Java class name is java.lang.Byte.

SHORT

public static final SimpleType SHORT

The SimpleType instance describing values whose Java class name is java.lang.Short.

INTEGER

public static final SimpleType INTEGER

The SimpleType instance describing values whose Java class name is java.lang.Integer.

LONG

public static final SimpleType LONG

The SimpleType instance describing values whose Java class name is java.lang.Long.

FLOAT

public static final SimpleType FLOAT

The SimpleType instance describing values whose Java class name is java.lang.Float.

DOUBLE

public static final SimpleType DOUBLE

The SimpleType instance describing values whose Java class name is java.lang.Double.

STRING

public static final SimpleType STRING

The SimpleType instance describing values whose Java class name is java.lang.String.

BIGDECIMAL

public static final SimpleType BIGDECIMAL

The SimpleType instance describing values whose Java class name is java.math.BigDecimal.

BIGINTEGER

public static final SimpleType BIGINTEGER

The SimpleType instance describing values whose Java class name is java.math.BigInteger.

DATE

public static final SimpleType DATE

The SimpleType instance describing values whose Java class name is java.util.Date.

OBJECTNAME

public static final SimpleType OBJECTNAME

The SimpleType instance describing values whose Java class name is javax.management.ObjectName.

Method Detail

isValue

public boolean isValue(Object obj)

Tests whether obj is a value for this SimpleType instance.

This method returns true if and only if obj is not null and obj's class name is the same as the className field defined for this SimpleType instance (ie the class name returned by the getClassName method).

Specified by:: isValue in class OpenType

Parameters:: obj - the object to be tested.
Returns:: true if obj is a value for this SimpleType instance.

equals

public boolean equals(Object obj)

Compares the specified obj parameter with this SimpleType instance for equality.

Two SimpleType instances are equal if and only if their getClassName methods return the same value.

Specified by:: equals in class OpenType

Parameters:: obj - the object to be compared for equality with this SimpleType instance; if obj is null or is not an instance of the class SimpleType, equals returns false.
Returns:: true if the specified object is equal to this SimpleType instance.

hashCode

public int hashCode()

Returns the hash code value for this SimpleType instance. The hash code of a SimpleType instance is the the hash code of the string value returned by the getClassName method.

As SimpleType instances are immutable, the hash code for this instance is calculated once, on the first call to hashCode, and then the same value is returned for subsequent calls.

Specified by:: hashCode in class OpenType

Returns:: the hash code value for this SimpleType instance

toString

public String toString()

Returns a string representation of this SimpleType instance.

The string representation consists of the name of this class (ie javax.management.openmbean.SimpleType) and the type name for this instance (which is the java class name of the values this SimpleType instance represents).

As SimpleType instances are immutable, the string representation for this instance is calculated once, on the first call to toString, and then the same value is returned for subsequent calls.

Specified by:: toString in class OpenType

Returns:: a string representation of this SimpleType instance

readResolve

public Object readResolve()
                   throws ObjectStreamException

Replace an object read from an ObjectInputStream with the unique instance for that value.

Returns:: the replacement object.
Throws:: ObjectStreamException - if the read object cannot be resolved.