Class Utils

java.lang.Object
com.jayway.jsonpath.internal.Utils
public final class Utils extends Object

  • Method Details

    • join

      public static String join(String delimiter, String wrap, Iterable<? extends Object> objs)

    • join

      public static String join(String delimiter, Iterable<? extends Object> objs)

    • concat

      public static String concat(CharSequence... strings)

    • closeQuietly

      public static void closeQuietly(Closeable closeable)

    • escape

      public static String escape(String str, boolean escapeSingleQuote)

    • unescape

      public static String unescape(String str)

    • hex

      public static String hex(char ch)
      Returns an upper case hexadecimal String for the given character.
      Parameters:
      ch - The character to map.
      Returns:
      An upper case hexadecimal String

    • isEmpty

      public static boolean isEmpty(CharSequence cs)

      Checks if a CharSequence is empty ("") or null.

      StringUtils.isEmpty(null)      = true
StringUtils.isEmpty("")        = true
StringUtils.isEmpty(" ")       = false
StringUtils.isEmpty("bob")     = false
StringUtils.isEmpty("  bob  ") = false

      NOTE: This method changed in Lang version 2.0. It no longer trims the CharSequence. That functionality is available in isBlank().

      Parameters:
      cs - the CharSequence to check, may be null
      Returns:
      true if the CharSequence is empty or null
      Since:
      3.0 Changed signature from isEmpty(String) to isEmpty(CharSequence)

    • notNull

      public static <T> T notNull(T object, String message, Object... values)

      Validate that the specified argument is not null; otherwise throwing an exception with the specified message. 

      Validate.notNull(myObject, "The object must not be null");
      Type Parameters:
      T - the object type
      Parameters:
      object - the object to check
      message - the String.format(String, Object...) exception message if invalid, not null
      values - the optional values for the formatted exception message
      Returns:
      the validated object (never null for method chaining)
      Throws:
      NullPointerException - if the object is null

    • isTrue

      public static void isTrue(boolean expression, String message)

      Validate that the argument condition is true; otherwise throwing an exception with the specified message. This method is useful when validating according to an arbitrary boolean expression, such as validating a primitive number or using your own custom validation expression.

      Validate.isTrue(i > 0.0, "The value must be greater than zero: %d", i);

      For performance reasons, the long value is passed as a separate parameter and appended to the exception message only in the case of an error.

      Parameters:
      expression - the boolean expression to check
      message -
      Throws:
      IllegalArgumentException - if expression is false

    • onlyOneIsTrue

      public static void onlyOneIsTrue(String message, boolean... expressions)
      Check if one and only one condition is true; otherwise throw an exception with the specified message.
      Parameters:
      message - error describing message
      expressions - the boolean expressions to check
      Throws:
      IllegalArgumentException - if zero or more than one expressions are true

    • onlyOneIsTrueNonThrow

      public static boolean onlyOneIsTrueNonThrow(boolean... expressions)

    • notEmpty

      public static <T extends CharSequence> T notEmpty(T chars, String message, Object... values)

      Validate that the specified argument character sequence is neither null nor a length of zero (no characters); otherwise throwing an exception with the specified message. 

      Validate.notEmpty(myString, "The string must not be empty");
      Type Parameters:
      T - the character sequence type
      Parameters:
      chars - the character sequence to check, validated not null by this method
      message - the String.format(String, Object...) exception message if invalid, not null
      values - the optional values for the formatted exception message, null array not recommended
      Returns:
      the validated character sequence (never null method for chaining)
      Throws:
      NullPointerException - if the character sequence is null
      IllegalArgumentException - if the character sequence is empty

    • toString

      public static String toString(Object o)