Class SimpleType<T>

java.lang.Object

javax.management.openmbean.OpenType<T>

javax.management.openmbean.SimpleType<T>

Type Parameters:: T - the Java type that values described by this SimpleType must have.

All Implemented Interfaces:: Serializable

public final class SimpleType<T> extends OpenType<T>

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:

1.5

See Also:

Field Summary

Modifier and Type	Field	Description
`static final SimpleType<BigDecimal>`	`BIGDECIMAL`	The `SimpleType` instance describing values whose Java class name is `java.math.BigDecimal`.
`static final SimpleType<BigInteger>`	`BIGINTEGER`	The `SimpleType` instance describing values whose Java class name is `java.math.BigInteger`.
`static final SimpleType<Boolean>`	`BOOLEAN`	The `SimpleType` instance describing values whose Java class name is `java.lang.Boolean`.
`static final SimpleType<Byte>`	`BYTE`	The `SimpleType` instance describing values whose Java class name is `java.lang.Byte`.
`static final SimpleType<Character>`	`CHARACTER`	The `SimpleType` instance describing values whose Java class name is `java.lang.Character`.
`static final SimpleType<Date>`	`DATE`	The `SimpleType` instance describing values whose Java class name is `java.util.Date`.
`static final SimpleType<Double>`	`DOUBLE`	The `SimpleType` instance describing values whose Java class name is `java.lang.Double`.
`static final SimpleType<Float>`	`FLOAT`	The `SimpleType` instance describing values whose Java class name is `java.lang.Float`.
`static final SimpleType<Integer>`	`INTEGER`	The `SimpleType` instance describing values whose Java class name is `java.lang.Integer`.
`static final SimpleType<Long>`	`LONG`	The `SimpleType` instance describing values whose Java class name is `java.lang.Long`.
`static final SimpleType<ObjectName>`	`OBJECTNAME`	The `SimpleType` instance describing values whose Java class name is `javax.management.ObjectName`.
`static final SimpleType<Short>`	`SHORT`	The `SimpleType` instance describing values whose Java class name is `java.lang.Short`.
`static final SimpleType<String>`	`STRING`	The `SimpleType` instance describing values whose Java class name is `java.lang.String`.
`static final SimpleType<Void>`	`VOID`	The `SimpleType` instance describing values whose Java class name is `java.lang.Void`.

Fields declared in class OpenType

ALLOWED_CLASSNAMES, ALLOWED_CLASSNAMES_LIST

Modifier and Type	Field	Description
`static final String[]`	`ALLOWED_CLASSNAMES`	Deprecated. Use `ALLOWED_CLASSNAMES_LIST` instead.
`static final List<String>`	`ALLOWED_CLASSNAMES_LIST`	List of the fully qualified names of the Java classes allowed for open data values.

Method Summary

Modifier and Type	Method	Description
`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 declared in class OpenType

getClassName, getDescription, getTypeName, isArray

Modifier and Type	Method	Description
`String`	`getClassName()`	Returns the fully qualified Java class name of the open data values this open type describes.
`String`	`getDescription()`	Returns the text description of this `OpenType` instance.
`String`	`getTypeName()`	Returns the name of this `OpenType` instance.
`boolean`	`isArray()`	Returns `true` if the open data values this open type describes are arrays, `false` otherwise.

Methods declared in class Object

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

Modifier and Type	Method	Description
`protected Object`	`clone()`	Creates and returns a copy of this object.
`protected void`	`finalize()`	Deprecated, for removal: This API element is subject to removal in a future version. Finalization is deprecated and subject to removal in a future release.
`final Class<?>`	`getClass()`	Returns the runtime class of this `Object`.
`final void`	`notify()`	Wakes up a single thread that is waiting on this object's monitor.
`final void`	`notifyAll()`	Wakes up all threads that are waiting on this object's monitor.
`final void`	`wait()`	Causes the current thread to wait until it is awakened, typically by being notified or interrupted.
`final void`	`wait(long timeoutMillis)`	Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed.
`final void`	`wait(long timeoutMillis, int nanos)`	Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed.

Field Details

VOID

public static final SimpleType<Void> VOID

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

BOOLEAN

public static final SimpleType<Boolean> BOOLEAN

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

CHARACTER

public static final SimpleType<Character> CHARACTER

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

BYTE

public static final SimpleType<Byte> BYTE

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

SHORT

public static final SimpleType<Short> SHORT

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

INTEGER

public static final SimpleType<Integer> INTEGER

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

LONG

public static final SimpleType<Long> LONG

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

FLOAT

public static final SimpleType<Float> FLOAT

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

DOUBLE

public static final SimpleType<Double> DOUBLE

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

STRING

public static final SimpleType<String> STRING

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

BIGDECIMAL

public static final SimpleType<BigDecimal> BIGDECIMAL

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

BIGINTEGER

public static final SimpleType<BigInteger> BIGINTEGER

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

DATE

public static final SimpleType<Date> DATE

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

OBJECTNAME

public static final SimpleType<ObjectName> OBJECTNAME

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

Method Details

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<T>
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<T>

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.

See Also:

hashCode

public int hashCode()

Returns the hash code value for this SimpleType instance. The hash code of a SimpleType instance is 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.

Overrides:

hashCode in class Object

Returns:

the hash code value for this SimpleType instance

See Also:

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<T>
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.

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