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java.lang.Objectjavax.sound.sampled.Line.Info
javax.sound.sampled.Port.Info
public static class Port.Info
This describes a single port.
Field Summary | |
---|---|
static Port.Info |
COMPACT_DISC
A CD player. |
static Port.Info |
HEADPHONE
Headphones. |
static Port.Info |
LINE_IN
Generic input line. |
static Port.Info |
LINE_OUT
Generic output line. |
static Port.Info |
MICROPHONE
A microphone. |
static Port.Info |
SPEAKER
A speaker. |
Constructor Summary | |
---|---|
Port.Info(Class<?> klass,
String name,
boolean isSource)
Create a new Info object, given the line's class, the name, and an argument indicating whether this is an input or an output. |
Method Summary | |
---|---|
boolean |
equals(Object o)
Determine whether this Object is semantically equal to another Object. |
String |
getName()
Return the name of this object. |
int |
hashCode()
Get a value that represents this Object, as uniquely as possible within the confines of an int. |
boolean |
isSource()
Return true if this describes an input line. |
boolean |
matches(Line.Info other)
Return true if this Info object matches the given object. |
String |
toString()
Return a description of this Info object. |
Methods inherited from class javax.sound.sampled.Line.Info |
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getLineClass |
Methods inherited from class java.lang.Object |
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clone, finalize, getClass, notify, notifyAll, wait, wait, wait |
Field Detail |
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public static final Port.Info COMPACT_DISC
public static final Port.Info HEADPHONE
public static final Port.Info LINE_IN
public static final Port.Info LINE_OUT
public static final Port.Info MICROPHONE
public static final Port.Info SPEAKER
Constructor Detail |
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public Port.Info(Class<?> klass, String name, boolean isSource)
klass
- the class of the linename
- the name of the lineisSource
- true if this is an input sourceMethod Detail |
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public final boolean equals(Object o)
Object
There are some fairly strict requirements on this
method which subclasses must follow:
a.equals(b)
and
b.equals(c)
, then a.equals(c)
must be true as well.a.equals(b)
and
b.equals(a)
must have the same value.a.equals(a)
must
always be true.a.equals(null)
must be false.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
.
equals
in class Object
o
- the Object to compare to
Object.hashCode()
public final int hashCode()
Object
There are some requirements on this method which
subclasses must follow:
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.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)
hashCode
in class Object
Object.equals(Object)
,
System.identityHashCode(Object)
public String getName()
public boolean isSource()
public boolean matches(Line.Info other)
Line.Info
matches
in class Line.Info
other
- the object to match
public final String toString()
Line.Info
toString
in class Line.Info
Object.getClass()
,
Object.hashCode()
,
Class.getName()
,
Integer.toHexString(int)
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