java.net.NetPermission Class in Java

NetPermission class is used to allow network permissions. NetPermission class extends BasicPermission class. It is a “named” permission i.e it contains a name but no action.

Permission name	What permission allows	Risks associated with this permission
allowHttpTrace	This permission allows using the HTTP TRACE method in HttpURLConnection	Attackers may use HTTP TRACE to access security in the HTTP headers
getCookieHandler	This permission allows getting the cookie handler that processes highly secure cookie information for this HTTP session	Attackers may get a cookie handler and get access to highly secure cookie information
getNetworkInformation	This permission allows getting information about local network interfaces	Attackers may get information about local hardware
getProxySelector	This permission allows the proxy selector to select which proxies to use when making network connections	Attackers may get a ProxySelector and get information about the proxy hosts and ports of  internal networks
getResponseCache	The permission allows accessing the local response cache	Attackers may get access the local cache which may contain security information
requestPasswordAuthentication	This permission grants the ability to ask the authenticator for a password	Attackers may steal this password
setCookieHandler	This permission allows setting the cookie handler that processes highly secure cookie information for this HTTP session	Attackers may get a cookie handler and get access to highly secure cookie information
setDefaultAuthenticator	This allows to set an authenticator	Attackers may set an authenticator and get security information
setProxySelector	This permission allows the proxy selector to set which proxies to use when making network connections	Attackers may set a ProxySelector and get information about the proxy hosts and ports of  internal networks
setResponseCache	The permission allows setting the local response cache	Attackers may get access the local cache which may contain security information
specifyStreamHandler	The permission allows specifying a StreamHandler to create URLs	Attackers may create a URL and get access to resources to which they normally not have access

Syntax: Class declaration

public final class NetPermission
extends BasicPermission

Constructors of this class 

Constructor	Description
NetPermission(String name)	Used for creating a new NetPermission object with the given name
NetPermission(String name, String action)	Used for creating a new NetPermission object with the given name and action

Methods inherited from class java.security.BasicPermission

Method	Description
equals(Object obj)	Checks whether the two BasicPermission objects are equal or not
getActions()	Returns the actions in String format
hashCode()	Returns the hash value for this object
implies(Permission permission)	Checks whether the given permission is implied by this object or not
newPermissionCollection()	Returns a new PermissionCollection object

Methods inherited from class java.security.Permission

Method	Description
checkGuard()	Used to implement guard interface
getName()	Returns name of this permission object
toString()	Returns string representation of this permission object

Methods inherited from class java.lang.Object
clone(), finalize(), getClass(), notify(), notifyAll(), wait(), wait(), wait()

Example 1:

Output:

allowHttpTrace
class java.net.NetPermission
303901780

Example 2:

Output:

getCookieHandler
class java.net.NetPermission
1381623952

Example 3:

Output:

Both permission are not equal