Utils (org.greenbytes.http:structured-fields 0.6-SNAPSHOT API)

java.lang.Object
- org.greenbytes.http.sfv.Utils

```
public class Utils
extends Object
```
Common utility methods.

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method	Description
`protected static String`	`checkKey(String value)`	Checks a key for validity
`protected static Map<String,ListElement<?>>`	`checkKeys(Map<String,ListElement<?>> value)`	Checks all keys in map for validity
`protected static boolean`	`isAlpha(char c)`	check for character to be alphanumeric
`protected static boolean`	`isDigit(char c)`	check for character to be a decimal digit
`protected static boolean`	`isLcAlpha(char c)`	check for character to be lowercase alphanumeric

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

- Method Detail
  - isDigit
```
protected static boolean isDigit(char c)
```
    check for character to be a decimal digit
  - isLcAlpha
```
protected static boolean isLcAlpha(char c)
```
    check for character to be lowercase alphanumeric
  - isAlpha
```
protected static boolean isAlpha(char c)
```
    check for character to be alphanumeric
  - checkKey
```
protected static String checkKey(String value)
```
    Checks a key for validity
    
    Parameters:
    
    value - to check
    
    Returns:
    
    checked value
  - checkKeys
```
protected static Map<String,ListElement<?>> checkKeys(Map<String,ListElement<?>> value)
```
    Checks all keys in map for validity
    
    Parameters:
    
    value - map to check
    
    Returns:
    
    checked map