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com.aspose.pdf

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java.lang.Object
- com.aspose.pdf.NumberTree

```
public class NumberTree
extends Object
```
Class representing Number tree structure of PDF file. 7.9.7Number Trees

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`com.aspose.pdf.engine.data.IPdfPrimitive`	`get(int key)` Gets item by key.
`com.aspose.ms.System.Collections.Generic.List<Integer>`	`getKeys()` Gets all keys in the tree.
`boolean`	`remove(int key)` Remove key from number tree.

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

- Method Detail
  - remove
```
public boolean remove(int key)
```
    Remove key from number tree.
    
    Parameters:
    
    key - int value
    
    Returns:
    
    boolean value
  - get
```
public com.aspose.pdf.engine.data.IPdfPrimitive get(int key)
```
    Gets item by key.
    
    Parameters:
    
    key - int value
    
    Returns:
    
    IPdfPrimitive object
  - getKeys
```
public com.aspose.ms.System.Collections.Generic.List<Integer> getKeys()
```
    Gets all keys in the tree.
    
    Returns:
    
    List<Integer> object