DefaultBufferAllocators (Netty API Reference (5.0.0.Alpha4))

java.lang.Object
- io.netty5.buffer.api.DefaultBufferAllocators

```
public final class DefaultBufferAllocators
extends Object
```
Accessor for the default, shared BufferAllocator instances. Two allocators are provided; one on-heap allocator, and one off-heap allocator.
These default allocators are configured via system properties.
These allocators cannot be closed directly. They will instead be disposed of when the Runtime is shutdown.

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method	Description
`static BufferAllocator`	`offHeapAllocator()`	Get the shared off-heap allocator.
`static BufferAllocator`	`onHeapAllocator()`	Get the shared on-heap allocator.
`static BufferAllocator`	`preferredAllocator()`	Get the preferred, shared allocator.

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

- Method Detail
  - preferredAllocator
```
public static BufferAllocator preferredAllocator()
```
    Get the preferred, shared allocator. This allocator is either on- or off-heap, and either pooling or unpooled, depending on the global configuration.
    
    Returns:
    
    The shared, generally preferred allocator.
  - onHeapAllocator
```
public static BufferAllocator onHeapAllocator()
```
    Get the shared on-heap allocator. This allocator always allocates on-heap buffers, and is either pooled, or unpooled.
    
    Returns:
    
    The shared on-heap allocator.
  - offHeapAllocator
```
public static BufferAllocator offHeapAllocator()
```
    Get the shared off-heap allocator. This allocator always allocates off-heap buffers, and is either pooled, or unpooled.
    
    Returns:
    
    The shared off-heap allocator.