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Added in API level 1

NoRouteToHostException

public class NoRouteToHostException
extends SocketException

java.lang.Object
   ↳ java.lang.Throwable
     ↳ java.lang.Exception
       ↳ java.io.IOException
         ↳ java.net.SocketException
           ↳ java.net.NoRouteToHostException


Signals that an error occurred while attempting to connect a socket to a remote address and port. Typically, the remote host cannot be reached because of an intervening firewall, or if an intermediate router is down.

Summary

Public constructors

NoRouteToHostException()

Construct a new NoRouteToHostException with no detailed message.

NoRouteToHostException(String msg)

Constructs a new NoRouteToHostException with the specified detail message as to why the remote host cannot be reached.

Inherited methods

Public constructors

NoRouteToHostException

Added in API level 1
public NoRouteToHostException ()

Construct a new NoRouteToHostException with no detailed message.

NoRouteToHostException

Added in API level 1
public NoRouteToHostException (String msg)

Constructs a new NoRouteToHostException with the specified detail message as to why the remote host cannot be reached. A detail message is a String that gives a specific description of this error.

Parameters
msg String: the detail message

Content and code samples on this page are subject to the licenses described in the Content License. Java and OpenJDK are trademarks or registered trademarks of Oracle and/or its affiliates.

Last updated 2026-08-03 UTC.

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