... devices. Because Java objects are loaded dynamically, Java ensures that the objects are "trusted." Java& apos;s class security mechanism makes sure that your applications are using the ... name). 2. 3. java -Djava .security. policy=c:\advjavacd\rmi\stats1\policy.all 4. 5. rmi.Stats1.StatsServerImpl 6. 7. Any regular URL. 8. 9. java -Djava .security. policy=http://policy.allStatsServerImpl ... but it isn't idiot-proof. The fact remains that, in order to screw up yourJava programs, you still have to make a major effort. Most Java programmers are pleased that Java has no pointers...
... since you, as an ABAP programmer, will already havea very good understandingof data types.Why do we have the data types we do in Java? Well when James Gosling (Java architect)started out writing ... can learn all about Javadoc at http:// java. sun.com/j2se/javadoc/index.jsp.Javadoc comments start with /** and end with */. You can also now use tags within your Javadoc comment block, as in ... Boolean with a capital B refers to the wrapper class and not to the data type.The boolean can only havea value of true or false. It does not havea value of 1 or 0 andcannot be treated as such....
... c:\jakarta-tomcat\classes;c:\jakarta-tomcat\lib\ant.jar;c:\jakarta-tomcat\lib\jaxp.jar;c:\jakarta-➥tomcat\lib\servlet.jar;c:\jakarta-tomcat\lib\parser.jar;c:\jakarta-tomcat\lib\we➥bserver.jar;c:\jakarta-tomcat\lib\jasper.jar;c:\jakarta-➥tomcat\lib\xalanservlet.jar;c:\jakarta-tomcat\lib\xerces.jar;c:\jakarta-➥tomcat\lib\xalanj1compat.jar;c:\jakarta-tomcat\lib\aaxalan.jar;c:\jdk1.3\lib\too➥ls.jar2001-05-23 ... c:\jakarta-tomcat\classes;c:\jakarta-tomcat\lib\ant.jar;c:\jakarta-tomcat\lib\jaxp.jar;c:\jakarta-➥tomcat\lib\servlet.jar;c:\jakarta-tomcat\lib\parser.jar;c:\jakarta-tomcat\lib\we➥bserver.jar;c:\jakarta-tomcat\lib\jasper.jar;c:\jakarta-➥tomcat\lib\xalanservlet.jar;c:\jakarta-tomcat\lib\xerces.jar;c:\jakarta-➥tomcat\lib\xalanj1compat.jar;c:\jakarta-tomcat\lib\aaxalan.jar;c:\jdk1.3\lib\too➥ls.jar2001-05-23 ... now havea new Web application installed. As the chess sayinggoes, “the rest is all a matter of details.”You have what you need: an example of a Java servlet calling a JSP page, and an example...
... discussed and heralded in particular as a great benefit in connectinglegacy applications to modern Web-based applications.Within a Web application, passing even one parameter that contains XML data ... environments.5.4 XML Data Flows in Web ApplicationsWe believe that passing XML data within a Web application will turn out to be asimportant as passing XML data between systems and applications.The latter ... database management systembecause handling chat data is an obvious job.We decided against that for several rea-sons. One is that we did not want to assume that all our readers are familiar...
... bonForumXML (a ForestHashtable) as a string.Now we decided to make it the input XML stream for the Xalan XSLT processor aspart of our TransformTagclass.Displaying the available chats would mean ... was to make sure that any inputthat came froma user could be used as an XML attribute value.The example thatprompted that (hopefully code-wide) precaution was the chatTopicattribute that ... for a bonForum user to become a host by starting a chat andthen re-enter the same chat as a guest.The problem is that that user then loses thecapability to again be a host of that chat. Having...
... logic, bymaking one more variable available to each JSP-produced page of a bonForuminstance.The incoming request parameters are validated and made available to the Web application in whatever ... flow—and that hopefully have self-explanatory names:boolean haveSubject = true;boolean haveTopic = true;boolean actorIsHostInChat = false;boolean actorIsGuestInChat = false;boolean chatExistsForSubjectAndTopic ... the applet parameters right onthe _robot page? Using the same target parameter as we did in the last section as anexample, that would mean doing this:<jsp:param name=”target” value=”display”/>The...
... there are two such XSLT classes, one for Xalan -Java 1 and one for Xalan- Java 2.Simplifying greatly, here are the statements called by the TransformTagclass to getits XML database in a string:private ... source:if(haveSubject && haveTopic) {String fakeChatItem = chatSubject + “_[“;fakeChatItem = fakeChatItem + chatTopic + “]”;// ‘_’ is separator in a chatItem// ‘.’ is separator in pathNameHashtable ... this watermark. 2798.2 The BonForumStore Classobject.That means that all the pathnames are available again but are sorted alphabeti-cally.The code on a JSP document likes it that way.The...
... will assume as it translates the tag thatthese variables are available as page attributes. Later, when we look at the translated Java code for a Tag Handler instance, you can see where the value ... bonForumStore application attribute from inside thetag-handler classes for the outputPathNames,outputChatMessages, and transform tags.We do that only once per Tag Handler class using a static variable ... visible. In fact, several multi-media output capabilities are made available to the code in an applet.You can developone of those Web applets that make Java famous!We have used the paint()method...
... twoclasses to encapsulate the steps required for either Xalan -Java 1or Xalan -Java 2.Theclasses are called Xalan1Transformerand Xalan2Transformer. Each has one methodcalled transform, which ... version from the form on system_executes_command.jsp. Note that if you have Xalan -Java- 2,you can also set xalanVersionto Xalan Java 1, as long as the compatibility JAR fileis accessible, ... OutputPathNamesTagclass(stripped of its Javadoc comments, to save space):package de.tarent.forum;import java. util.*;import javax.servlet.jsp.*;import javax.servlet.jsp.tagext.*;/** Outputs pathNames...
... created by the followingstatement from the file ForestHashtable .java: public NodeNameHashtable nodeNameHashtable = new NodeNameHashtable();Notice that a class called NodeNameHashtablehas ... this watermark. 416Chapter 11 XML Data Storage Class: ForestHashtableattribute to a chat element.We will also try using it to allow a chat host to change therating of a guest in a chat.WarningThe ... watermark. 402Chapter 11 XML Data Storage Class: ForestHashtablepathNamesare allowed in this tree of subjects.This means, for example, that you cannot have two sibling nodes named Piranhaor...
... de.tarent.forum;/*<Imports>*/import java. text.*;import java. io.*;import java. net.*;import java. util.*;import javax.servlet.jsp.*;import javax.servlet.jsp.tagext.*;// Imported TraX classesimport javax.xml.transform.TransformerFactory;import ... javax.xml.transform.TransformerFactory;import javax.xml.transform.Transformer;import javax.xml.transform.stream.StreamSource;import javax.xml.transform.stream.StreamResult;import javax.xml.transform.TransformerException;import ... select an XSLTprocessor.* Currently, three values: “Xalan Java 1”, “Xalan Java 2”, or“xalanVersion”.* If type is “xalanVersion”, the tag object looks for an application * attribute of the same...