Class Strings

Method Details

• isNullOrEmpty

  public static boolean isNullOrEmpty(String s)

  Indicates whether the given String is null or empty.

  Parameters:

  s - the String to check.

  Returns:

  true if the given String is null or empty, otherwise false.

• isEmpty

  @Deprecated public static boolean isEmpty(String s)

  Deprecated.

  Only there for backward compatibility reasons - use isNullOrEmpty(String) instead.

• quote

  public static String quote(String s)

  Returns the given String surrounded by single quotes, or null if the given String is null.

  Parameters:

  s - the given String.

  Returns:

  the given String surrounded by single quotes, or null if the given String is null.

• quote

  public static Object quote(Object o)

  Returns the given object surrounded by single quotes, only if the object is a String.

  Parameters:

  o - the given object.

  Returns:

  the given object surrounded by single quotes, only if the object is a String.

  See Also:

  • quote(String)

• concat

  public static String concat(Object... objects)

  Concatenates the given objects into a single String. This method is more efficient than concatenating using "+", since only one StringBuilder is created.

  Parameters:

  objects - the objects to concatenate.

  Returns:

  a String containing the given objects.

• join

  public static Strings.StringsToJoin join(String... strings)

  Joins the given Strings using a given delimiter. The following example illustrates proper usage of this method:

   Strings.join("a", "b", "c").with("|")
   

  which will result in the String "a|b|c".

  Parameters:

  strings - the Strings to join.

  Returns:

  an intermediate object that takes a given delimiter and knows how to join the given Strings.

  See Also:

  • Strings.StringsToJoin.with(String)

• append

  public static Strings.StringToAppend append(String toAppend)

  Appends a given String to the given target, only if the target does not end with the given String to append. The following example illustrates proper usage of this method:

   Strings.append("c").to("ab");
   Strings.append("c").to("abc");
   

  resulting in the String "abc" for both cases.

  Parameters:

  toAppend - the String to append.

  Returns:

  an intermediate object that takes the target String and knows to append the given String.

  See Also:

  • Strings.StringToAppend.to(String)