CharFilter (JavaDocs for mmm-util-core 7.0.0)

All Known Implementing Classes:

ConjunctionCharFilter, ListCharFilter
```
public interface CharFilter
```
This is the interface for a filter that decides if a given character is acceptable or should be filtered.
It is used by CharSequenceScanner and avoids conversion of char to Character for performance reasons. In other cases please prefer to use Filter.

Since:

1.0.0

Author:

Joerg Hohwiller (hohwille at users.sourceforge.net)

Field Summary

Fields
Modifier and Type	Field and Description
`static CharFilter`	`ACCEPT_ALL_FILTER` A filter that `accepts` any charater.
`static CharFilter`	`ASCII_LETTER_FILTER` A filter that only `accepts` the Latin ASCII letters 'a'-'z' and 'A'-'Z'.
`static CharFilter`	`ASCII_LOWER_CASE_LETTER_FILTER` A filter that only `accepts` the lower case Latin ASCII letters 'a'-'z'.
`static CharFilter`	`ASCII_UPPER_CASE_LETTER_FILTER` A filter that only `accepts` the upper case Latin ASCII letters 'A'-'Z'.
`static CharFilter`	`FILE_SEPARATOR_FILTER` A filter that only `accepts` the file separator characters '/' and '\\'.
`static CharFilter`	`IDENTIFIER_FILTER` A filter that only `accepts` characters valid for a technical identifier-string (e.g.
`static CharFilter`	`LATIN_DIGIT_FILTER` A filter that only `accepts` the Latin digits '0'-'9'.
`static CharFilter`	`LATIN_DIGIT_OR_LETTER_FILTER` A filter that only `accepts` the Latin digits '0'-'9' or ASCII letters 'a'-'z' and 'A'-'Z'.
`static CharFilter`	`WHITESPACE_FILTER` A filter that `accepts` only `whitespaces`.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type Method and Description

boolean accept(char c)
This method determines if the given character c should be accepted.

All Methods Instance Methods Abstract Methods
Modifier and Type	Method and Description
`boolean`	`accept(char c)` This method determines if the given character `c` should be accepted.

- Field Detail
  - IDENTIFIER_FILTER
```
static final CharFilter IDENTIFIER_FILTER
```
    A filter that only accepts characters valid for a technical identifier-string (e.g. literal oder variable-name). This means accepted characters are Latin digits, ASCII letters or one of '.', '_' or '-'.
    
    Since:
    
    1.1.1
  - LATIN_DIGIT_OR_LETTER_FILTER
```
static final CharFilter LATIN_DIGIT_OR_LETTER_FILTER
```
    A filter that only accepts the Latin digits '0'-'9' or ASCII letters 'a'-'z' and 'A'-'Z'.
    
    Since:
    
    1.1.0
  - LATIN_DIGIT_FILTER
```
static final CharFilter LATIN_DIGIT_FILTER
```
    A filter that only accepts the Latin digits '0'-'9'.
  - ASCII_LETTER_FILTER
```
static final CharFilter ASCII_LETTER_FILTER
```
    A filter that only accepts the Latin ASCII letters 'a'-'z' and 'A'-'Z'.
  - ASCII_LOWER_CASE_LETTER_FILTER
```
static final CharFilter ASCII_LOWER_CASE_LETTER_FILTER
```
    A filter that only accepts the lower case Latin ASCII letters 'a'-'z'.
    
    Since:
    
    2.0.0
  - ASCII_UPPER_CASE_LETTER_FILTER
```
static final CharFilter ASCII_UPPER_CASE_LETTER_FILTER
```
    A filter that only accepts the upper case Latin ASCII letters 'A'-'Z'.
    
    Since:
    
    2.0.0
  - WHITESPACE_FILTER
```
static final CharFilter WHITESPACE_FILTER
```
    A filter that accepts only whitespaces.
  - ACCEPT_ALL_FILTER
```
static final CharFilter ACCEPT_ALL_FILTER
```
    A filter that accepts any charater.
    
    Since:
    
    3.0.0
  - FILE_SEPARATOR_FILTER
```
static final CharFilter FILE_SEPARATOR_FILTER
```
    A filter that only accepts the file separator characters '/' and '\\'.
    
    Since:
    
    7.0.0
- Method Detail
  - accept
```
boolean accept(char c)
```
    This method determines if the given character c should be accepted.
    
    Parameters:
    
    c - is the character to check.
    
    Returns:
    
    true if the given character c is acceptable, false if it should be filtered.

Interface CharFilter

Field Summary

Method Summary

Field Detail

IDENTIFIER_FILTER

LATIN_DIGIT_OR_LETTER_FILTER

LATIN_DIGIT_FILTER

ASCII_LETTER_FILTER

ASCII_LOWER_CASE_LETTER_FILTER

ASCII_UPPER_CASE_LETTER_FILTER

WHITESPACE_FILTER

ACCEPT_ALL_FILTER

FILE_SEPARATOR_FILTER

Method Detail

accept