Package org.eblocker.server.common.network

Class NetworkUtils

java.lang.Object

org.eblocker.server.common.network.NetworkUtils

public class NetworkUtils
extends Object

IPv4 network utilities

Field Summary

Fields

Modifier and Type	Field	Description
static final String	linkLocal
static final String	privateClassA
static final String	privateClassB
static final String	privateClassC

Method Summary

Modifier and Type	Method	Description
static String	getIPv4NetworkAddress(String ipAddress, String networkMask)
static String	getIPv4NetworkMask(int prefixLength)
static int	getPrefixLength(String ipv4NetworkMask)
static boolean	isBeforeAddress(String ip1, String ip2)	Check whether ip1 is before/smaller than ip2 (precondition/required: both IPs are in the same network)
static String	replaceLastByte(String ipv4Address, byte b)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

privateClassA

public static final String privateClassA

See Also:

• Constant Field Values

privateClassB

public static final String privateClassB

See Also:

• Constant Field Values

privateClassC

public static final String privateClassC

See Also:

• Constant Field Values

linkLocal

public static final String linkLocal

See Also:

• Constant Field Values

Method Details

getIPv4NetworkMask

public static String getIPv4NetworkMask(int prefixLength)

getPrefixLength

public static int getPrefixLength(String ipv4NetworkMask)

getIPv4NetworkAddress

public static String getIPv4NetworkAddress(String ipAddress,
 String networkMask)

replaceLastByte

public static String replaceLastByte(String ipv4Address,
 byte b)

isBeforeAddress

public static boolean isBeforeAddress(String ip1,
 String ip2)

Check whether ip1 is before/smaller than ip2 (precondition/required: both IPs are in the same network)

Parameters:

ip1 -

ip2 -

Returns: