KeyAlreadyExistsException (Java SE 9 & JDK 9 )

java.lang.Object
- java.lang.Throwable
- - java.lang.Exception
  - - java.lang.RuntimeException
    - - java.lang.IllegalArgumentException
      - javax.management.openmbean.KeyAlreadyExistsException

All Implemented Interfaces:

Serializable
```
public class KeyAlreadyExistsException
extends IllegalArgumentException
```
This runtime exception is thrown to indicate that the index of a row to be added to a tabular data instance is already used to refer to another row in this tabular data instance.

Since:

1.5

See Also:

Serialized Form

Constructor Summary

Constructors
Constructor	Description
`KeyAlreadyExistsException()`	A KeyAlreadyExistsException with no detail message.
`KeyAlreadyExistsException(String msg)`	A KeyAlreadyExistsException with a 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
  - KeyAlreadyExistsException
```
public KeyAlreadyExistsException()
```
    A KeyAlreadyExistsException with no detail message.
  - KeyAlreadyExistsException
```
public KeyAlreadyExistsException(String msg)
```
    A KeyAlreadyExistsException with a detail message.
    
    Parameters:
    
    msg - the detail message.