Unit

java.lang.Object
- javascalautils.Unit

All Implemented Interfaces:

java.io.Serializable
```
public final class Unit
extends java.lang.Object
implements java.io.Serializable
```
Represents the type scala.Unit.
The usage of Unit is for situations where one returns types such as Try or Future that are not meant to hold a value.
E.g.
```
 
 Try<Unit> deleteSynchronous(String id)
 Future<Unit> deleteAsynchronous(String id)
 
 
```
The example illustrates deleting something but the only thing we care of is if the operation was successful.
This becomes very apparent with the asynchronous method. In that case we only care if the operation is finished and successful.
One can of course return dummy objects/values but providing Unit is more concise as it clearly marks a non-value.
Instead of creating new instances it is recommended to use the singleton instance.
Since:

1.6

See Also:

Serialized Form

Field Summary

Fields
Modifier and Type Field Description

static Unit Instance
Static singleton representing the Unit.

Constructor Summary

Constructors
Constructor Description

Unit()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`boolean`	`equals(java.lang.Object obj)`	Simply compares the provided object to see if it is an instance of `Unit`.
`int`	`hashCode()`	Always returns `69`.
`java.lang.String`	`toString()`	Always returns the string `Unit`

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

- Field Detail
  - Instance
```
public static final Unit Instance
```
    Static singleton representing the Unit.
    
    Since:
    
    1.7
- Constructor Detail
  - Unit
```
public Unit()
```
- Method Detail
  - hashCode
```
public int hashCode()
```
    Always returns 69.
    
    Overrides:
    
    hashCode in class java.lang.Object
    
    Returns:
    
    Always 69
    
    Since:
    
    1.7
  - equals
```
public boolean equals(java.lang.Object obj)
```
    Simply compares the provided object to see if it is an instance of Unit.
    
    Overrides:
    
    equals in class java.lang.Object
    
    Parameters:
    
    obj - The object to compare to
    
    Since:
    
    1.7
  - toString
```
public java.lang.String toString()
```
    Always returns the string Unit
    
    Overrides:
    
    toString in class java.lang.Object
    
    Returns:
    
    The string Unit
    
    Since:
    
    1.7