DataKey (javaparser-core 3.10.1 API)

java.lang.Object
- com.github.javaparser.ast.DataKey<T>

Type Parameters:

T - The type of the object which is stored
```
public abstract class DataKey<T>
extends Object
```
A key to a piece of data associated with a Node at runtime. The key contains type information that can be used to check the type of any user data value for the key when the value is set. DataKey is abstract in order to force the creation of a subtype. That subtype is used to test for identity when looking for the user data because actual object identity would suffer from problems under serialization. So, the correct way to declare a DataKey is like this:
```
 
 public static final DataKey<Role> ROLE = new DataKey<Role>() { };
 
 
```
This code was taken from the Wicket project.
See Also:

Node.getData(DataKey)

- Constructor Summary
  
  Constructors
  Constructor Description
  
  DataKey()
- Method Summary
  
  All Methods Instance Methods Concrete Methods
  Modifier and Type Method Description
  
  boolean equals(Object obj)
  
  int hashCode()
  - Methods inherited from class java.lang.Object
    clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - DataKey
```
public DataKey()
```
- Method Detail
  - hashCode
```
public int hashCode()
```
    Overrides:
    
    hashCode in class Object
  - equals
```
public boolean equals(Object obj)
```
    Overrides:
    
    equals in class Object
    
    See Also:
    
    Object.equals(java.lang.Object)