Package org.zkoss.util

Class Checksums

java.lang.Object

org.zkoss.util.Checksums

public class Checksums
extends Object

Checksum relevant utilities.

Author:

tomyeh

Field Summary

Fields

Modifier and Type	Field	Description
static final String	SKIPS	The default skips.

Constructor Summary

Constructors

Constructor	Description
Checksums()

Method Summary

Modifier and Type	Method	Description
static final char	getChecksum(StringBuffer val, String skips)	Returns the checksum character of the specified val.
static final char	getChecksum(String val, String skips)	Returns the checksum character of the specified val.
static final String	toReadable(long val, String skips)	Returns a readable string plus a checksum.
static final char	toReadableChar(int val, String skips)	Returns the character of the specified val by skipping skips.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

SKIPS

public static final String SKIPS

The default skips.

See Also:

• Constant Field Values

Constructor Details

Checksums

public Checksums()

Method Details

toReadable

public static final String toReadable(long val,
 String skips)

Returns a readable string plus a checksum.

Parameters:

skips - specifies a string of characters that shall be skipped. If null specified, "DEOX" is assumed. To skip nothing, specify "". You can only specify upper-case letters: A-Z. And, it must be in alphabetic order.

toReadableChar

public static final char toReadableChar(int val,
 String skips)

Returns the character of the specified val by skipping skips. Note: the caller must ensure val is in the right range: 0 - (36 - skips.length()).

Parameters:

skips - specifies a string of characters that shall be skipped. If null specified, "DEOX" is assumed. To skip nothing, specify "". You can only specify upper-case letters: A-Z. And, it must be in alphabetic order.

getChecksum

public static final char getChecksum(String val,
 String skips)

Returns the checksum character of the specified val.

It use toReadableChar(int, java.lang.String) to convert the checksum to a character.

Note: it skips '-' and ' '.

Parameters:

skips - specifies a string of characters that shall be skipped. If null specified, "DEOX" is assumed. To skip nothing, specify "". You can only specify upper-case letters: A-Z. And, it must be in alphabetic order.

getChecksum

public static final char getChecksum(StringBuffer val,
 String skips)

Returns the checksum character of the specified val.

It use toReadableChar(int, java.lang.String) to convert the checksum to a character.

Note: it skips '-' and ' '.

Parameters:

skips - specifies a string of characters that shall be skipped. If null specified, "DEOX" is assumed. To skip nothing, specify "". You can only specify upper-case letters: A-Z. And, it must be in alphabetic order.