public static class LineEvent.Type extends Object
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.
|
Modifier | Constructor and Description |
---|---|
protected |
LineEvent.Type(String name)
Create a new type with the indicated name.
|
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.
|
public static final LineEvent.Type CLOSE
public static final LineEvent.Type OPEN
public static final LineEvent.Type START
public static final LineEvent.Type STOP
protected LineEvent.Type(String name)
name
- the namepublic 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 toObject.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 toString()
toString
in class Object
Object.getClass()
,
Object.hashCode()
,
Class.getName()
,
Integer.toHexString(int)