**Inheritance:**
java.lang.Object, java.lang.Enum
```
public enum ChecksumValidation extends Enum<ChecksumValidation>
```

Enable checksum validation during recognition for 1D and Postal barcodes.

Default is treated as Yes for symbologies which must contain checksum, as No where checksum only possible.

Checksum never used: Codabar, PatchCode, Pharmacode, DataLogic2of5

Checksum is possible: Code39 Standard/Extended, Standard2of5, Interleaved2of5, ItalianPost25, Matrix2of5, MSI, ItalianPost25, DeutschePostIdentcode, DeutschePostLeitcode, VIN

Checksum always used: Rest symbologies

--------------------

> ```
> This sample shows influence of ChecksumValidation on recognition quality and results
>  
>  BarcodeGenerator generator = new BarcodeGenerator(EncodeTypes.EAN_13, "1234567890128");
>  {
>      generator.save("c:\\test.png");
>  }
>  BarCodeReader reader = new BarCodeReader("c:\\test.png", DecodeType.EAN_13))
>  {
>      //checksum disabled
>      reader.getBarcodeSettings().setChecksumValidation(ChecksumValidation.OFF);
>      for(BarCodeResult result : reader.readBarCodes())
>      {
>          System.out.println("BarCode CodeText: " + result.getCodeText());
>          System.out.println("BarCode Value: " + result.getExtended().getOneD().getValue());
>          System.out.println("BarCode Checksum: " + result.getExtended().getOneD().getCheckSum());
>      }
>  }
>  BarCodeReader reader = new BarCodeReader("c:\\test.png", DecodeType.EAN_13);
>  //checksum enabled
>  reader.getBarcodeSettings().setChecksumValidation(ChecksumValidation.ON);
>  for(BarCodeResult result : reader.readBarCodes())
>  {
>     System.out.println("BarCode CodeText: " + result.getCodeText());
>     System.out.println("BarCode Value: " + result.getExtended().getOneD().getValue());
>     System.out.println("BarCode Checksum: " + result.getExtended().getOneD().getCheckSum());
>  }
> ```
## Fields

| Field | Description |
| --- | --- |
| [DEFAULT](#DEFAULT) | If checksum is required by the specification - it will be validated. |
| [OFF](#OFF) | Do not validate checksum. |
| [ON](#ON) | Always validate checksum if possible. |
## Methods

| Method | Description |
| --- | --- |
| [<T>valueOf(Class<T> arg0, String arg1)](#-T-valueOf-java.lang.Class-T--java.lang.String-) |  |
| [compareTo(E arg0)](#compareTo-E-) |  |
| [describeConstable()](#describeConstable--) |  |
| [equals(Object arg0)](#equals-java.lang.Object-) |  |
| [fromValue(int value)](#fromValue-int-) |  |
| [getClass()](#getClass--) |  |
| [getDeclaringClass()](#getDeclaringClass--) |  |
| [getValue()](#getValue--) |  |
| [hashCode()](#hashCode--) |  |
| [name()](#name--) |  |
| [notify()](#notify--) |  |
| [notifyAll()](#notifyAll--) |  |
| [ordinal()](#ordinal--) |  |
| [toString()](#toString--) |  |
| [valueOf(String name)](#valueOf-java.lang.String-) |  |
| [values()](#values--) |  |
| [wait()](#wait--) |  |
| [wait(long arg0)](#wait-long-) |  |
| [wait(long arg0, int arg1)](#wait-long-int-) |  |
### DEFAULT {#DEFAULT}
```
public static final ChecksumValidation DEFAULT
```


If checksum is required by the specification - it will be validated.

### OFF {#OFF}
```
public static final ChecksumValidation OFF
```


Do not validate checksum.

### ON {#ON}
```
public static final ChecksumValidation ON
```


Always validate checksum if possible.

### <T>valueOf(Class<T> arg0, String arg1) {#-T-valueOf-java.lang.Class-T--java.lang.String-}
```
public static T <T>valueOf(Class<T> arg0, String arg1)
```




**Parameters:**
| Parameter | Type | Description |
| --- | --- | --- |
| arg0 | java.lang.Class<T> |  |
| arg1 | java.lang.String |  |

**Returns:**
T
### compareTo(E arg0) {#compareTo-E-}
```
public final int compareTo(E arg0)
```




**Parameters:**
| Parameter | Type | Description |
| --- | --- | --- |
| arg0 | E |  |

**Returns:**
int
### describeConstable() {#describeConstable--}
```
public final Optional<Enum.EnumDesc<E>> describeConstable()
```




**Returns:**
java.util.Optional<java.lang.Enum.EnumDesc<E>>
### equals(Object arg0) {#equals-java.lang.Object-}
```
public final boolean equals(Object arg0)
```




**Parameters:**
| Parameter | Type | Description |
| --- | --- | --- |
| arg0 | java.lang.Object |  |

**Returns:**
boolean
### fromValue(int value) {#fromValue-int-}
```
public static ChecksumValidation fromValue(int value)
```




**Parameters:**
| Parameter | Type | Description |
| --- | --- | --- |
| value | int |  |

**Returns:**
[ChecksumValidation](../../com.aspose.barcode.barcoderecognition/checksumvalidation)
### getClass() {#getClass--}
```
public final native Class<?> getClass()
```




**Returns:**
java.lang.Class<?>
### getDeclaringClass() {#getDeclaringClass--}
```
public final Class<E> getDeclaringClass()
```




**Returns:**
java.lang.Class<E>
### getValue() {#getValue--}
```
public int getValue()
```




**Returns:**
int
### hashCode() {#hashCode--}
```
public final int hashCode()
```




**Returns:**
int
### name() {#name--}
```
public final String name()
```




**Returns:**
java.lang.String
### notify() {#notify--}
```
public final native void notify()
```




### notifyAll() {#notifyAll--}
```
public final native void notifyAll()
```




### ordinal() {#ordinal--}
```
public final int ordinal()
```




**Returns:**
int
### toString() {#toString--}
```
public String toString()
```




**Returns:**
java.lang.String
### valueOf(String name) {#valueOf-java.lang.String-}
```
public static ChecksumValidation valueOf(String name)
```




**Parameters:**
| Parameter | Type | Description |
| --- | --- | --- |
| name | java.lang.String |  |

**Returns:**
[ChecksumValidation](../../com.aspose.barcode.barcoderecognition/checksumvalidation)
### values() {#values--}
```
public static ChecksumValidation[] values()
```




**Returns:**
com.aspose.barcode.barcoderecognition.ChecksumValidation[]
### wait() {#wait--}
```
public final void wait()
```




### wait(long arg0) {#wait-long-}
```
public final void wait(long arg0)
```




**Parameters:**
| Parameter | Type | Description |
| --- | --- | --- |
| arg0 | long |  |

### wait(long arg0, int arg1) {#wait-long-int-}
```
public final void wait(long arg0, int arg1)
```




**Parameters:**
| Parameter | Type | Description |
| --- | --- | --- |
| arg0 | long |  |
| arg1 | int |  |