Package org.apache.ivy.util

Class StringUtils

  • public final class StringUtils
extends java.lang.Object
    Convenient class used only for uncapitalization. Usually use commons lang but here we do not want to have such a dependency for only one feature

    • Method Summary

      All Methods Static Methods Concrete Methods Deprecated Methods 
      Modifier and Type Method Description
      static void assertNotNullNorEmpty​(java.lang.String value, java.lang.String errorMessage)
      Asserts that the passed value is not null and not an empty String.
      static void assertNotNullNotEmpty​(java.lang.String value, java.lang.String errorMessage)
      Deprecated.
      static java.lang.String decrypt​(java.lang.String str)
      Decrypts a string encrypted with encrypt.
      static java.lang.String encrypt​(java.lang.String str)
      Encrypt the given string in a way which anybody having access to this method algorithm can easily decrypt.
      static java.lang.String getErrorMessage​(java.lang.Throwable t)
      Returns the error message associated with the given Throwable.
      static java.lang.String getStackTrace​(java.lang.Throwable e)
      Returns the exception stack trace as a String.
      static boolean isNullOrEmpty​(java.lang.String s)
      Checks that a string is not null or consists of whitespace by trimming and checking the length of the result.
      static java.lang.String join​(java.lang.Object[] objs, java.lang.String sep)
      Deprecated.
      static java.lang.String joinArray​(java.lang.String[] objs, java.lang.String sep)
      Joins the given string array in one string, each separated by the given separator.
      static java.lang.String repeat​(java.lang.String str, int count)  
      static java.lang.String[] splitToArray​(java.lang.String list)
      Splits the given string into a string array using comma as a separator.
      static java.lang.String uncapitalize​(java.lang.String string)  

      • Methods inherited from class java.lang.Object

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

    • Method Detail

      • uncapitalize

        public static java.lang.String uncapitalize​(java.lang.String string)

      • getErrorMessage

        public static java.lang.String getErrorMessage​(java.lang.Throwable t)
        Returns the error message associated with the given Throwable. The error message returned will try to be as precise as possible, handling cases where e.getMessage() is not meaningful, like NullPointerException for instance.
        Parameters:
        t - the throwable to get the error message from
        Returns:
        the error message of the given exception

      • getStackTrace

        public static java.lang.String getStackTrace​(java.lang.Throwable e)
        Returns the exception stack trace as a String.
        Parameters:
        e - the exception to get the stack trace from.
        Returns:
        the exception stack trace

      • join

        @Deprecated
public static java.lang.String join​(java.lang.Object[] objs,
                                    java.lang.String sep)
        Deprecated.

      • joinArray

        public static java.lang.String joinArray​(java.lang.String[] objs,
                                         java.lang.String sep)
        Joins the given string array in one string, each separated by the given separator. Example: 
         joinArray(new String[] {"one", "two", "three"}, ", ") -> "one, two, three"
        Parameters:
        objs - The array of strings.
        sep - The separator to use.
        Returns:
        The concatenated string.

      • splitToArray

        public static java.lang.String[] splitToArray​(java.lang.String list)
        Splits the given string into a string array using comma as a separator. Every array member gets trimmed.
        Parameters:
        list - the string
        Returns:
        String[]

      • isNullOrEmpty

        public static boolean isNullOrEmpty​(java.lang.String s)
        Checks that a string is not null or consists of whitespace by trimming and checking the length of the result.
        Parameters:
        s - the string to check
        Returns:
        boolean

      • assertNotNullNorEmpty

        public static void assertNotNullNorEmpty​(java.lang.String value,
                                         java.lang.String errorMessage)
        Asserts that the passed value is not null and not an empty String. The implementation of this method trims the (non-null) value to check whether the value is an empty string. If the value is either null or empty, then this method throws an IllegalArgumentException with the passed errorMessage as the message in the exception.
        Parameters:
        value - The value to check for
        errorMessage - The error message

      • assertNotNullNotEmpty

        @Deprecated
public static void assertNotNullNotEmpty​(java.lang.String value,
                                         java.lang.String errorMessage)
        Deprecated.

      • encrypt

        public static final java.lang.String encrypt​(java.lang.String str)
        Encrypt the given string in a way which anybody having access to this method algorithm can easily decrypt. This is useful only to avoid clear string storage in a file for example, but shouldn't be considered as a real mean of security. This only works with simple characters (char < 256).
        Parameters:
        str - the string to encrypt
        Returns:
        the encrypted version of the string

      • decrypt

        public static final java.lang.String decrypt​(java.lang.String str)
        Decrypts a string encrypted with encrypt.
        Parameters:
        str - the encrypted string to decrypt
        Returns:
        The decrypted string.

      • repeat

        public static java.lang.String repeat​(java.lang.String str,
                                      int count)