Java Module java.base Package javax.security.auth.callback Class TextOutputCallback（JDK11）

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java.lang.Object
- javax.security.auth.callback.TextOutputCallback

All Implemented Interfaces:

Serializable, Callback
```
public class TextOutputCallback
extends Object
implements Callback, Serializable
```
Underlying security services instantiate and pass a TextOutputCallback to the handle method of a CallbackHandler to display information messages, warning messages and error messages.

Since:

1.4

See Also:

CallbackHandler, Serialized Form

Field Summary

Fields
Modifier and Type	Field	Description
`static int`	`ERROR`	Error message.
`static int`	`INFORMATION`	Information message.
`static int`	`WARNING`	Warning message.

Constructor Summary

Constructors
Constructor	Description
`TextOutputCallback(int messageType, String message)`	Construct a TextOutputCallback with a message type and message to be displayed.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`String`	`getMessage()`	Get the message to be displayed.
`int`	`getMessageType()`	Get the message type.

Methods declared in class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - INFORMATION
```
public static final int INFORMATION
```
    Information message.
    
    See Also:
    
    Constant Field Values
  - WARNING
```
public static final int WARNING
```
    Warning message.
    
    See Also:
    
    Constant Field Values
  - ERROR
```
public static final int ERROR
```
    Error message.
    
    See Also:
    
    Constant Field Values
- Constructor Detail
  - TextOutputCallback
```
public TextOutputCallback(int messageType,
                          String message)
```
    Construct a TextOutputCallback with a message type and message to be displayed.
    
    Parameters:
    
    messageType - the message type (INFORMATION, WARNING or ERROR).
    
    message - the message to be displayed.
    
    Throws:
    
    IllegalArgumentException - if messageType is not either INFORMATION, WARNING or ERROR, if message is null, or if message has a length of 0.
- Method Detail
  - getMessageType
```
public int getMessageType()
```
    Get the message type.
    
    Returns:
    
    the message type (INFORMATION, WARNING or ERROR).
  - getMessage
```
public String getMessage()
```
    Get the message to be displayed.
    
    Returns:
    
    the message to be displayed.

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