Field Detail

• PADDED_HASH_FORMAT

  public static final java.text.DecimalFormat PADDED_HASH_FORMAT

  Used to format an Object's hashcode into a 0-padded 10 char String, e.g. for 24993066 returns "0024993066"

Constructor Detail

• GeneralUtil

  public GeneralUtil()

Method Detail

• openStreamFromClasspath

  public static java.io.InputStream openStreamFromClasspath​(java.lang.Object obj,
                                                            java.lang.String resource)

  Description of the Method

  Parameters:

  obj - PARAM

  resource - PARAM

  Returns:

  Returns

• getURLFromClasspath

  public static java.net.URL getURLFromClasspath​(java.lang.Object obj,
                                                 java.lang.String resource)

• dumpShortException

  public static void dumpShortException​(java.lang.Exception ex)

  Dumps an exception to the console, only the last 5 lines of the stack trace.

  Parameters:

  ex - PARAM

• trackBack

  public static java.lang.String trackBack​(int cnt)

  Returns a String tracking the last n method calls, from oldest to most recent. You can use this as a simple tracing mechanism to find out the calls that got to where you execute the trackBack() call from. Example:

   // called from Box.calcBorders(), line 639
   String tback = GeneralUtil.trackBack(6);
   System.out.println(tback);
   

  produces

   Boxing.layoutChildren(ln 204)
   BlockBoxing.layoutContent(ln 81)
   Boxing.layout(ln 72)
   Boxing.layout(ln 133)
   Box.totalLeftPadding(ln 306)
   Box.calcBorders(ln 639)
   

  The trackBack() method itself is always excluded from the dump. Note the output may not be useful if HotSpot has been optimizing the code.

  Parameters:

  cnt - How far back in the call tree to go; if call tree is smaller, will be limited to call tree.

  Returns:

  see desc

• classNameOnly

  public static java.lang.String classNameOnly​(java.lang.Object o)

  Given an Object instance, returns just the classname with no package

  Parameters:

  o - PARAM

  Returns:

  Returns

• classNameOnly

  public static java.lang.String classNameOnly​(java.lang.String cname)

  Given a String classname, returns just the classname with no package

  Parameters:

  cname - PARAM

  Returns:

  Returns

• paddedHashCode

  public static java.lang.String paddedHashCode​(java.lang.Object o)

  Description of the Method

  Parameters:

  o - PARAM

  Returns:

  Returns

• isMacOSX

  public static boolean isMacOSX()

• htmlEscapeSpace

  public static java.lang.StringBuffer htmlEscapeSpace​(java.lang.String uri)

• inputStreamToString

  public static java.lang.String inputStreamToString​(java.io.InputStream is)
                                              throws java.io.IOException

  Throws:

  java.io.IOException

• main

  public static void main​(java.lang.String[] args)

• writeStringToFile

  public static void writeStringToFile​(java.lang.String content,
                                       java.lang.String encoding,
                                       java.lang.String fileName)
                                throws java.io.IOException,
                                       java.io.UnsupportedEncodingException

  Throws:

  java.io.IOException

  java.io.UnsupportedEncodingException

• parseIntRelaxed

  public static int parseIntRelaxed​(java.lang.String s)

  Parses an integer from a string using less restrictive rules about which characters we won't accept. This scavenges the supplied string for any numeric character, while dropping all others.

  Parameters:

  s - The string to parse

  Returns:

  The number represented by the passed string, or 0 if the string is null, empty, white-space only, contains only non-numeric characters, or simply evaluates to 0 after parsing (e.g. "0")

• escapeHTML

  public static final java.lang.String escapeHTML​(java.lang.String s)

  Converts any special characters into their corresponding HTML entities , for example < to <. This is done using a character by character test, so you may consider other approaches for large documents. Make sure you declare the entities that might appear in this replacement, e.g. the latin-1 entities This method was taken from a code-samples website, written and hosted by Real Gagnon, at http://www.rgagnon.com/javadetails/java-0306.html.

  Parameters:

  s - The String which may contain characters to escape.

  Returns:

  The string with the characters as HTML entities.