public class InetAddress extends Object
| Constructor and Description |
|---|
InetAddress()
InetAddress
|
InetAddress(int addr) |
| Modifier and Type | Method and Description |
|---|---|
boolean |
equals(Object obj)
Compares two Objects for equality.
|
byte[] |
getAddress() |
static InetAddress[] |
getAllByName(String s) |
static InetAddress |
getByName(String host)
Resolves the supplied host name into an IP address.
|
String |
getHostAddress() |
String |
getHostName() |
static InetAddress |
getLocalHost() |
int |
hashCode()
Returns a hash code value for the object.
|
boolean |
isMulticastAddress() |
static void |
resetIPAddress(String host)
Removes the entry for the specified host/domain from the ARP cache.
|
String |
toString()
Returns a string representation of the object.
|
public InetAddress()
public InetAddress(int addr)
addr - ?public int hashCode()
Objectjava.util.Hashtable.
The general contract of hashCode is:
hashCode method
must consistently return the same integer. This integer need not
remain consistent from one execution of an application to another
execution of the same application.
equals
method, then calling the hashCode method on each of the
two objects must produce the same integer result.
hashCode in class ObjectObject.equals(java.lang.Object),
Hashtablepublic static void resetIPAddress(String host)
InetAdderss.getByName() will freshly resolve the host which for DNS pools
may then return a different IP address.host - the host/domain namepublic static InetAddress getByName(String host) throws UnknownHostException
host - the host/domain nameUnknownHostException - if the host cannot be resolvedpublic boolean equals(Object obj)
Object
The equals method implements an equivalence relation:
x,
x.equals(x) should return true.
x and
y, x.equals(y) should return
true if and only if y.equals(x) returns
true.
x,
y, and z, if x.equals(y)
returns true and y.equals(z) returns
true, then x.equals(z) should return
true.
x
and y, multiple invocations of x.equals(y)
consistently return true or consistently return
false.
x, x.equals(null)
should return false.
The equals method for class Object implements the most
discriminating possible equivalence relation on objects; that is,
for any reference values x and y, this
method returns true if and only if x and
y refer to the same object (x==y has the
value true).
equals in class Objectobj - the reference object with which to compare.true if this object is the same as the obj
argument; false otherwise.Boolean.hashCode(),
Hashtablepublic byte[] getAddress()
public static InetAddress[] getAllByName(String s) throws UnknownHostException
s - ?UnknownHostException - ?public String getHostAddress()
public String getHostName()
public static InetAddress getLocalHost() throws UnknownHostException
UnknownHostException - ?public boolean isMulticastAddress()
public String toString()
ObjecttoString method returns a string that
"textually represents" this object. The result should
be a concise but informative representation that is easy for a
person to read.
It is recommended that all subclasses override this method.
The toString method for class Object
returns a string consisting of the name of the class of which the
object is an instance, the at-sign character `@', and
the unsigned hexadecimal representation of the hash code of the
object.