AbstractBootstrap (Netty API Reference (4.1.116.Final))

java.lang.Object
- io.netty.bootstrap.AbstractBootstrap<B,C>

All Implemented Interfaces:

Cloneable

Direct Known Subclasses:

Bootstrap, ServerBootstrap
```
public abstract class AbstractBootstrap<B extends AbstractBootstrap<B,C>,C extends Channel>
extends Object
implements Cloneable
```
AbstractBootstrap is a helper class that makes it easy to bootstrap a Channel. It support method-chaining to provide an easy way to configure the AbstractBootstrap.
When not used in a ServerBootstrap context, the bind() methods are useful for connectionless transports such as datagram (UDP).

Method Summary

All Methods Instance Methods Abstract Methods Concrete Methods Deprecated Methods
Modifier and Type	Method and Description
`<T> B`	`attr(AttributeKey<T> key, T value)` Allow to specify an initial attribute of the newly created `Channel`.
`ChannelFuture`	`bind()` Create a new `Channel` and bind it.
`ChannelFuture`	`bind(InetAddress inetHost, int inetPort)` Create a new `Channel` and bind it.
`ChannelFuture`	`bind(int inetPort)` Create a new `Channel` and bind it.
`ChannelFuture`	`bind(SocketAddress localAddress)` Create a new `Channel` and bind it.
`ChannelFuture`	`bind(String inetHost, int inetPort)` Create a new `Channel` and bind it.
`B`	`channel(Class<? extends C> channelClass)` The `Class` which is used to create `Channel` instances from.
`B`	`channelFactory(ChannelFactory<? extends C> channelFactory)` Deprecated. Use `channelFactory(io.netty.channel.ChannelFactory)` instead.
`B`	`channelFactory(ChannelFactory<? extends C> channelFactory)` `ChannelFactory` which is used to create `Channel` instances from when calling `bind()`.
`abstract B`	`clone()` Returns a deep clone of this bootstrap which has the identical configuration.
`abstract AbstractBootstrapConfig<B,C>`	`config()` Returns the `AbstractBootstrapConfig` object that can be used to obtain the current config of the bootstrap.
`B`	`extensionsClassLoader(ClassLoader classLoader)` Load `ChannelInitializerExtension`s using the given class loader.
`EventLoopGroup`	`group()` Deprecated. Use `config()` instead.
`B`	`group(EventLoopGroup group)` The `EventLoopGroup` which is used to handle all the events for the to-be-created `Channel`
`B`	`handler(ChannelHandler handler)` the `ChannelHandler` to use for serving the requests.
`B`	`localAddress(InetAddress inetHost, int inetPort)`
`B`	`localAddress(int inetPort)`
`B`	`localAddress(SocketAddress localAddress)` The `SocketAddress` which is used to bind the local "end" to.
`B`	`localAddress(String inetHost, int inetPort)`
`<T> B`	`option(ChannelOption<T> option, T value)` Allow to specify a `ChannelOption` which is used for the `Channel` instances once they got created.
`ChannelFuture`	`register()` Create a new `Channel` and register it with an `EventLoop`.
`String`	`toString()`
`B`	`validate()` Validate all the parameters.

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

- Method Detail
  - group
```
public B group(EventLoopGroup group)
```
    The EventLoopGroup which is used to handle all the events for the to-be-created Channel
  - channel
```
public B channel(Class<? extends C> channelClass)
```
    The Class which is used to create Channel instances from. You either use this or channelFactory(io.netty.channel.ChannelFactory) if your Channel implementation has no no-args constructor.
  - channelFactory
```
@Deprecated
public B channelFactory(ChannelFactory<? extends C> channelFactory)
```
    Deprecated. Use channelFactory(io.netty.channel.ChannelFactory) instead.
  - channelFactory
```
public B channelFactory(ChannelFactory<? extends C> channelFactory)
```
    ChannelFactory which is used to create Channel instances from when calling bind(). This method is usually only used if channel(Class) is not working for you because of some more complex needs. If your Channel implementation has a no-args constructor, its highly recommend to just use channel(Class) to simplify your code.
  - localAddress
```
public B localAddress(SocketAddress localAddress)
```
    The SocketAddress which is used to bind the local "end" to.
  - localAddress
```
public B localAddress(int inetPort)
```
    See Also:
    
    localAddress(SocketAddress)
  - localAddress
```
public B localAddress(String inetHost,
                      int inetPort)
```
    See Also:
    
    localAddress(SocketAddress)
  - localAddress
```
public B localAddress(InetAddress inetHost,
                      int inetPort)
```
    See Also:
    
    localAddress(SocketAddress)
  - option
```
public <T> B option(ChannelOption<T> option,
                    T value)
```
    Allow to specify a ChannelOption which is used for the Channel instances once they got created. Use a value of null to remove a previous set ChannelOption.
  - attr
```
public <T> B attr(AttributeKey<T> key,
                  T value)
```
    Allow to specify an initial attribute of the newly created Channel. If the value is null, the attribute of the specified key is removed.
  - extensionsClassLoader
```
public B extensionsClassLoader(ClassLoader classLoader)
```
    Load ChannelInitializerExtensions using the given class loader.
    By default, the extensions will be loaded by the same class loader that loaded this bootstrap class.
    
    Parameters:
    
    classLoader - The class loader to use for loading ChannelInitializerExtensions.
    
    Returns:
    
    This bootstrap.
  - validate
```
public B validate()
```
    Validate all the parameters. Sub-classes may override this, but should call the super method in that case.
  - clone
```
public abstract B clone()
```
    Returns a deep clone of this bootstrap which has the identical configuration. This method is useful when making multiple Channels with similar settings. Please note that this method does not clone the EventLoopGroup deeply but shallowly, making the group a shared resource.
    
    Overrides:
    
    clone in class Object
  - register
```
public ChannelFuture register()
```
    Create a new Channel and register it with an EventLoop.
  - bind
```
public ChannelFuture bind()
```
    Create a new Channel and bind it.
  - bind
```
public ChannelFuture bind(int inetPort)
```
    Create a new Channel and bind it.
  - bind
```
public ChannelFuture bind(String inetHost,
                          int inetPort)
```
    Create a new Channel and bind it.
  - bind
```
public ChannelFuture bind(InetAddress inetHost,
                          int inetPort)
```
    Create a new Channel and bind it.
  - bind
```
public ChannelFuture bind(SocketAddress localAddress)
```
    Create a new Channel and bind it.
  - handler
```
public B handler(ChannelHandler handler)
```
    the ChannelHandler to use for serving the requests.
  - group
```
@Deprecated
public final EventLoopGroup group()
```
    Deprecated. Use config() instead.
    
    Returns the configured EventLoopGroup or null if non is configured yet.
  - config
```
public abstract AbstractBootstrapConfig<B,C> config()
```
    Returns the AbstractBootstrapConfig object that can be used to obtain the current config of the bootstrap.
  - toString
```
public String toString()
```
    Overrides:
    
    toString in class Object

Class AbstractBootstrap<B extends AbstractBootstrap<B,C>,C extends Channel>

Method Summary

Methods inherited from class java.lang.Object

Method Detail

group

channel

channelFactory

channelFactory

localAddress

localAddress

localAddress

localAddress

option

attr

extensionsClassLoader

validate

clone

register

bind

bind

bind

bind

bind

handler

group

config

toString