javax.sound.sampled

Class LineEvent.Type

java.lang.Object

javax.sound.sampled.LineEvent.Type

Enclosing class:

LineEvent

public static class LineEvent.Type
extends Object

This class represents the kinds of state changes that can occur to a Line. The standard states are availabe as static instances.

Since:

1.3

Field Summary

Fields

Modifier and Type	Field and Description
static LineEvent.Type	CLOSE An event of this type is posted when a Line closes.
static LineEvent.Type	OPEN An event of this type is posted when a Line opens.
static LineEvent.Type	START An event of this type is posted when a Line starts.
static LineEvent.Type	STOP An event of this type is posted when a Line stops.

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	LineEvent.Type(String name) Create a new type with the indicated name.

Method Summary

Methods

Modifier and Type	Method and Description
boolean	equals(Object o) Determine whether this Object is semantically equal to another Object.
int	hashCode() Get a value that represents this Object, as uniquely as possible within the confines of an int.
String	toString() Return the name of this Type.

Methods inherited from class java.lang.Object

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

Field Detail

CLOSE

public static final LineEvent.Type CLOSE

An event of this type is posted when a Line closes.

OPEN

public static final LineEvent.Type OPEN

An event of this type is posted when a Line opens.

START

public static final LineEvent.Type START

An event of this type is posted when a Line starts.

STOP

public static final LineEvent.Type STOP

An event of this type is posted when a Line stops.

Constructor Detail

LineEvent.Type

protected LineEvent.Type(String name)

Create a new type with the indicated name.

Parameters:

name - the name

Method Detail

equals

public final boolean equals(Object o)

Description copied from class: Object

Determine whether this Object is semantically equal to another Object.

There are some fairly strict requirements on this method which subclasses must follow:

• It must be transitive. If a.equals(b) and b.equals(c), then a.equals(c) must be true as well.
• It must be symmetric. a.equals(b) and b.equals(a) must have the same value.
• It must be reflexive. a.equals(a) must always be true.
• It must be consistent. Whichever value a.equals(b) returns on the first invocation must be the value returned on all later invocations.
• a.equals(null) must be false.
• It must be consistent with hashCode(). That is, a.equals(b) must imply a.hashCode() == b.hashCode(). The reverse is not true; two objects that are not equal may have the same hashcode, but that has the potential to harm hashing performance.

This is typically overridden to throw a ClassCastException if the argument is not comparable to the class performing the comparison, but that is not a requirement. It is legal for a.equals(b) to be true even though a.getClass() != b.getClass(). Also, it is typical to never cause a NullPointerException.

In general, the Collections API (java.util) use the equals method rather than the == operator to compare objects. However, IdentityHashMap is an exception to this rule, for its own good reasons.

The default implementation returns this == o.

Overrides:

equals in class Object

Parameters:

o - the Object to compare to

Returns:

whether this Object is semantically equal to another

See Also:

Object.hashCode()

hashCode

public final int hashCode()

Description copied from class: Object

Get a value that represents this Object, as uniquely as possible within the confines of an int.

There are some requirements on this method which subclasses must follow:

• Semantic equality implies identical hashcodes. In other words, if a.equals(b) is true, then a.hashCode() == b.hashCode() must be as well. However, the reverse is not necessarily true, and two objects may have the same hashcode without being equal.
• It must be consistent. Whichever value o.hashCode() returns on the first invocation must be the value returned on all later invocations as long as the object exists. Notice, however, that the result of hashCode may change between separate executions of a Virtual Machine, because it is not invoked on the same object.

Notice that since hashCode is used in Hashtable and other hashing classes, a poor implementation will degrade the performance of hashing (so don't blindly implement it as returning a constant!). Also, if calculating the hash is time-consuming, a class may consider caching the results.

The default implementation returns System.identityHashCode(this)

Overrides:

hashCode in class Object

Returns:

the hash code for this Object

See Also:

Object.equals(Object), System.identityHashCode(Object)

toString

public String toString()

Return the name of this Type.

Overrides:

toString in class Object

Returns:

the String representing this Object, which may be null

See Also:

Object.getClass(), Object.hashCode(), Class.getName(), Integer.toHexString(int)