GtinNormalizer (Java GS1 Implementations 1.0.3 API)

java.lang.Object
- com.s24.gs1.GtinNormalizer

```
public class GtinNormalizer
extends Object
```
Removes non-digit characters from a GTIN and adds leading zeros to GTINs according to the specified target length.
To have unified GTIN values, you can use this normalizer. It precedes a GTIN with zeros. Due to the checksum calculation mechanism this won't affect the validity of a GTIN. Any non-digit characters will be removed.

- Constructor Summary
  
  Constructors
  Constructor Description
  
  GtinNormalizer(int targetLength)
  Creates a new GTIN normalizer.
- Method Summary
  
  All Methods Instance Methods Concrete Methods
  Modifier and Type Method Description
  
  String normalize(CharSequence gtin)
  Adds leading zeros to a GTIN value.
  - Methods inherited from class java.lang.Object
    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - GtinNormalizer
```
public GtinNormalizer(int targetLength)
```
    Creates a new GTIN normalizer.
    
    Parameters:
    
    targetLength - A valid GTIN length to normalize GTINs
    
    Throws:
    
    IllegalArgumentException - If the target length is not a allowed GTIN format length
- Method Detail
  - normalize
```
public String normalize(CharSequence gtin)
```
    Adds leading zeros to a GTIN value.
    
    Parameters:
    
    gtin - The GTIN to normalize. Must not be null or empty.
    
    Returns:
    
    The GTIN padded to the given target length and
    
    Throws:
    
    IllegalArgumentException - If the input was null or empty