Class JavaUtils

  • Direct Known Subclasses:
    JavaUtils

    public class JavaUtils
    extends Object
    JavaUtils
    • Field Detail

      • EMPTY_STRING_ARRAY

        public static final String[] EMPTY_STRING_ARRAY
        An empty immutable String array.
    • Constructor Detail

      • JavaUtils

        public JavaUtils()
    • Method Detail

      • isJavaKeyword

        public static boolean isJavaKeyword​(String keyword)
        Checks if the input string is a valid java keyword.
        Returns:
        Returns boolean.
      • hasUpperCase

        public static boolean hasUpperCase​(String word)
        Check if the word has any uppercase letters
        Parameters:
        word -
        Returns:
      • makeNonJavaKeyword

        public static String makeNonJavaKeyword​(String keyword)
        Turns a java keyword string into a non-Java keyword string. (Right now this simply means appending an underscore.)
      • xmlNameToJava

        public static String xmlNameToJava​(String name)
      • capitalizeFirstChar

        public static String capitalizeFirstChar​(String name)
        Capitalizes the first character of the name.
        Parameters:
        name -
        Returns:
        Returns String.
      • xmlNameToJavaIdentifier

        public static String xmlNameToJavaIdentifier​(String name)
        converts an xml name to a java identifier
        Parameters:
        name -
        Returns:
        java identifier
      • isTrue

        public static boolean isTrue​(String value)
        Tests the String 'value': return 'false' if its 'false', '0', or 'no' - else 'true'

        Follow in 'C' tradition of boolean values: false is specific (0), everything else is true;

      • isTrueExplicitly

        public static boolean isTrueExplicitly​(String value)
        Tests the String 'value': return 'true' if its 'true', '1', or 'yes' - else 'false'
      • isTrueExplicitly

        public static boolean isTrueExplicitly​(Object value,
                                               boolean defaultVal)
        Tests the Object 'value': if its null, return default. if its a Boolean, return booleanValue() if its an Integer, return 'false' if its '0' else 'true' if its a String, return isTrueExplicitly((String)value). All other types return 'true'
      • isTrueExplicitly

        public static boolean isTrueExplicitly​(Object value)
      • isTrue

        public static boolean isTrue​(Object value,
                                     boolean defaultVal)
        Tests the Object 'value': if its null, return default. if its a Boolean, return booleanValue() if its an Integer, return 'false' if its '0' else 'true' if its a String, return 'false' if its 'false', 'no', or '0' - else 'true' All other types return 'true'
      • isTrue

        public static boolean isTrue​(Object value)
      • isFalse

        public static boolean isFalse​(String value)
        Tests the String 'value': return 'true' if its 'false', '0', or 'no' - else 'false'

        Follow in 'C' tradition of boolean values: false is specific (0), everything else is true;

      • isFalseExplicitly

        public static boolean isFalseExplicitly​(String value)
        Tests the String 'value': return 'true' if its null, 'false', '0', or 'no' - else 'false'
      • isFalseExplicitly

        public static boolean isFalseExplicitly​(Object value,
                                                boolean defaultVal)
        Tests the Object 'value': if its null, return default. if its a Boolean, return !booleanValue() if its an Integer, return 'true' if its '0' else 'false' if its a String, return isFalseExplicitly((String)value). All other types return 'false'
      • isFalseExplicitly

        public static boolean isFalseExplicitly​(Object value)
      • isFalse

        public static boolean isFalse​(Object value,
                                      boolean defaultVal)
        Tests the Object 'value': if its null, return default. if its a Boolean, return booleanValue() if its an Integer, return 'false' if its '0' else 'true' if its a String, return 'false' if its 'false', 'no', or '0' - else 'true' All other types return 'true'
      • isFalse

        public static boolean isFalse​(Object value)
      • isJavaId

        public static boolean isJavaId​(String id)
      • split

        public static String[] split​(String str,
                                     char separatorChar)

        Splits the provided text into an array, separator specified. This is an alternative to using StringTokenizer.

        The separator is not included in the returned String array. Adjacent separators are treated as one separator.

        A null input String returns null.

         StringUtils.split(null, *)         = null
         StringUtils.split("", *)           = []
         StringUtils.split("a.b.c", '.')    = ["a", "b", "c"]
         StringUtils.split("a..b.c", '.')   = ["a", "b", "c"]
         StringUtils.split("a:b:c", '.')    = ["a:b:c"]
         StringUtils.split("a\tb\nc", null) = ["a", "b", "c"]
         StringUtils.split("a b c", ' ')    = ["a", "b", "c"]
         
        Parameters:
        str - the String to parse, may be null
        separatorChar - the character used as the delimiter, null splits on whitespace
        Returns:
        an array of parsed Strings, null if null String input
      • getWrapperClass

        public static Class getWrapperClass​(Class primitive)
      • getWrapperClass

        public static Class getWrapperClass​(String primitive)
      • indexOfIgnoreCase

        public static int indexOfIgnoreCase​(String string,
                                            String search)
        Scans the parameter string for the parameter search ignoring case when comparing characters.
        Parameters:
        string -
        search - If test is empty -1 is always returned.
        Returns:
        -1 if the string was not found or the index of the first matching character
      • replace

        public static final String replace​(String name,
                                           String oldT,
                                           String newT)
        replace: Like String.replace except that the old new items are strings.
        Parameters:
        name - string
        oldT - old text to replace
        newT - new text to use
        Returns:
        replacement string
      • callStackToString

        public static String callStackToString()
        Get a string containing the stack of the current location. Note This utility is useful in debug scenarios to dump out the call stack.
        Returns:
        String
      • stackToString

        public static String stackToString​(Throwable e)
        Get a string containing the stack of the specified exception
        Parameters:
        e -
        Returns:
      • getObjectIdentity

        public static String getObjectIdentity​(Object obj)
        Mimics the default Object.toString() produces a string of the form: obj.getClass().getName() + "@" + object's hashCode. This method can be used to print the debug message when you want just the short name or if using the toString will cause full expansion of underlying data structures. The returned value can also be used as an identity key.
        Returns:
        obj.getClass().getName() + "@" + Integer.toHexString(System.identityHashCode(obj));