Field Detail

• DEFAULT_SEPARATOR

  public static final String DEFAULT_SEPARATOR

  See Also:

  Constant Field Values

• DEFAULT_KEYVALUE_SEPARATOR

  public static final String DEFAULT_KEYVALUE_SEPARATOR

  See Also:

  Constant Field Values

Constructor Detail

• Strings

  public Strings()

Method Detail

• appendKeyValue

  public static StringBuilder appendKeyValue(StringBuilder sb,
                             String key,
                             Object value)

  Append to a StringBuilder a key/value. Uses default separators.

  Parameters:

  sb - StringBuilder to use

  key - Key to append.

  value - Value to append.

  Returns:

  Passed sb populated with key/value.

• appendKeyValue

  public static StringBuilder appendKeyValue(StringBuilder sb,
                             String key,
                             Object value,
                             String separator,
                             String keyValueSeparator)

  Append to a StringBuilder a key/value. Uses default separators.

  Parameters:

  sb - StringBuilder to use

  key - Key to append.

  value - Value to append.

  separator - Value to use between key and value.

  keyValueSeparator - Value to use between key/value sets.

  Returns:

  Passed sb populated with key/value.

• domainNamePointerToHostName

  public static String domainNamePointerToHostName(String dnPtr)

  Given a PTR string generated via reverse DNS lookup, return everything except the trailing period. Example for host.example.com., return host.example.com

  Parameters:

  dnPtr - a domain name pointer (PTR) string.

  Returns:

  Sanitized hostname with last period stripped off.

• isEmpty

  public static boolean isEmpty(String input)

  Null-safe length check.

  Parameters:

  input -

  Returns:

  true if null or length==0

• padFront

  public static String padFront(String input,
                char padding,
                int length)

  Push the input string to the right by appending a character before it, usually a space.

  Parameters:

  input - the string to pad

  padding - the character to repeat to the left of the input string

  length - the desired total length including the padding

  Returns:

  padding characters + input

• repeat

  public static String repeat(char c,
              int reapeatFor)

  Parameters:

  c - repeat this character

  reapeatFor - the length of the output String

  Returns:

  c, repeated repeatFor times