UnknownHostException (Java SE 9 & JDK 9 )

java.lang.Object
- java.lang.Throwable
- - java.lang.Exception
  - - java.io.IOException
    - - java.net.UnknownHostException

All Implemented Interfaces:

Serializable
```
public class UnknownHostException
extends IOException
```
Thrown to indicate that the IP address of a host could not be determined.

Since:

1.0

See Also:

Serialized Form

Constructor Summary

Constructors
Constructor	Description
`UnknownHostException()`	Constructs a new `UnknownHostException` with no detail message.
`UnknownHostException(String message)`	Constructs a new `UnknownHostException` with the specified detail message.

Method Summary
- Methods inherited from class java.lang.Object
  clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
- Methods inherited from class java.lang.Throwable
  addSuppressed, fillInStackTrace, getCause, getLocalizedMessage, getMessage, getStackTrace, getSuppressed, initCause, printStackTrace, printStackTrace, printStackTrace, setStackTrace, toString

- Constructor Detail
  - UnknownHostException
```
public UnknownHostException(String message)
```
    Constructs a new UnknownHostException with the specified detail message.
    
    Parameters:
    
    message - the detail message.
  - UnknownHostException
```
public UnknownHostException()
```
    Constructs a new UnknownHostException with no detail message.