Signal (Netty API Reference (4.1.128.Final))

java.lang.Object
- java.lang.Throwable
- - java.lang.Error
  - - io.netty.util.Signal

All Implemented Interfaces:

Constant<Signal>, Serializable, Comparable<Signal>
```
public final class Signal
extends Error
implements Constant<Signal>
```
A special Error which is used to signal some state or request by throwing it. Signal has an empty stack trace and has no cause to save the instantiation overhead.

See Also:

Serialized Form

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`int`	`compareTo(Signal other)`
`boolean`	`equals(Object obj)`
`void`	`expect(Signal signal)` Check if the given `Signal` is the same as this instance.
`Throwable`	`fillInStackTrace()`
`int`	`hashCode()`
`int`	`id()` Returns the unique number assigned to this `Constant`.
`Throwable`	`initCause(Throwable cause)`
`String`	`name()` Returns the name of this `Constant`.
`String`	`toString()`
`static Signal`	`valueOf(Class<?> firstNameComponent, String secondNameComponent)` Shortcut of `valueOf(firstNameComponent.getName() + "#" + secondNameComponent)`.
`static Signal`	`valueOf(String name)` Returns the `Signal` of the specified name.

Methods inherited from class java.lang.Throwable
addSuppressed, getCause, getLocalizedMessage, getMessage, getStackTrace, getSuppressed, printStackTrace, printStackTrace, printStackTrace, setStackTrace

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

- Method Detail
  - valueOf
```
public static Signal valueOf(String name)
```
    Returns the Signal of the specified name.
  - valueOf
```
public static Signal valueOf(Class<?> firstNameComponent,
                             String secondNameComponent)
```
    Shortcut of valueOf(firstNameComponent.getName() + "#" + secondNameComponent).
  - expect
```
public void expect(Signal signal)
```
    Check if the given Signal is the same as this instance. If not an IllegalStateException will be thrown.
  - initCause
```
public Throwable initCause(Throwable cause)
```
    Overrides:
    
    initCause in class Throwable
  - fillInStackTrace
```
public Throwable fillInStackTrace()
```
    Overrides:
    
    fillInStackTrace in class Throwable
  - id
```
public int id()
```
    Description copied from interface: Constant
    
    Returns the unique number assigned to this Constant.
    
    Specified by:
    
    id in interface Constant<Signal>
  - name
```
public String name()
```
    Description copied from interface: Constant
    
    Returns the name of this Constant.
    
    Specified by:
    
    name in interface Constant<Signal>
  - equals
```
public boolean equals(Object obj)
```
    Overrides:
    
    equals in class Object
  - hashCode
```
public int hashCode()
```
    Overrides:
    
    hashCode in class Object
  - compareTo
```
public int compareTo(Signal other)
```
    Specified by:
    
    compareTo in interface Comparable<Signal>
  - toString
```
public String toString()
```
    Overrides:
    
    toString in class Throwable

Class Signal

Method Summary

Methods inherited from class java.lang.Throwable

Methods inherited from class java.lang.Object

Method Detail

valueOf

valueOf

expect

initCause

fillInStackTrace

id

name

equals

hashCode

compareTo

toString