HeadlessException

java.awt

Class HeadlessException

java.lang.Object
- java.lang.Throwable
- - java.lang.Exception
  - - java.lang.RuntimeException
    - - java.lang.UnsupportedOperationException
      - java.awt.HeadlessException

All Implemented Interfaces:

Serializable
```
public class HeadlessException
extends UnsupportedOperationException
```
Thrown when code that is dependent on a keyboard, display, or mouse is called in an environment that does not support a keyboard, display, or mouse.

Since:

1.4

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
`HeadlessException()`
`HeadlessException(String msg)`

Method Summary

All Methods

Instance Methods

Concrete Methods
Modifier and Type	Method and Description
`String`	`getMessage()` Returns the detail message string of this throwable.

Methods inherited from class java.lang.Throwable
addSuppressed, fillInStackTrace, getCause, getLocalizedMessage, getStackTrace, getSuppressed, initCause, printStackTrace, printStackTrace, printStackTrace, setStackTrace, toString

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

- Constructor Detail
  - HeadlessException
```
public HeadlessException()
```
  - HeadlessException
```
public HeadlessException(String msg)
```
- Method Detail
  - getMessage
```
public String getMessage()
```
    Description copied from class: Throwable
    
    Returns the detail message string of this throwable.
    
    Overrides:
    
    getMessage in class Throwable
    
    Returns:
    
    the detail message string of this Throwable instance (which may be null).