Problem: Getting various errors when trying to use applets without a webserver ---- The customer is trying to test his InterClient Applet in an HTML file without using a webserver. He is just loading the HTML file as a file from the Netscape browser. He emailed me the following information: The problem I am having is how do I get Netscape to find the required interclient classes to test using a localhost. Location of files: Project class files: c:JBuildermyclassesBayerTrack*.class HTML file: c:JBuildermyclassesBayerTrackBayerTrack.html interclient.jar file: c:JBuildermyclassesBayerTrackinterclient.jar Contents of the Applet Tag of the HTML file: <APPLET ARCHIVE = "interclient.jar" CODEBASE = "." CODE = "BayerTrack.BayerTrack.class" NAME = "BayerTrack" WIDTH = 700 HEIGHT = 420 HSPACE = 0 VSPACE = 0 ALIGN = middle > </APPLET> Results from the Netscape Java Console: java.lang.ClassNotFoundException: interbase.interclient.Driver Netscape does not seem to find the contents of the jar file, although it does find the jar file. If I copy the interclient classes (I leave the jar file located as indicated above) to the directory: c:JBuildermyclassesinterbaseinterclient I get the following response from the NetScape Java console: # Security Exception: checkpropsaccess.key # Security Exception: Couldn't connect to 'localhost' with origin from 'local-classpath-classes'. interbase.interclient.BadInstallationException: Your security manager does NOT allow socket connections to localhost on port 3060. See API documentation for class interbase.interclient.BadInstallationException. Solution: The following are the results from my tests: ====================================== Test 1: ------- Config: ------- CLASSPATH: Does not include 'interclient.jar' Local DIR: Does contain 'interclient.jar' Results: -------- In the Java Console: -------------------- # Starting applet: GetTitlesApplet, appletID=9974400, contextID=4 # Loading classes from downloaded archive file: # file:/D|/temp/interclient.jar # Applet GetTitlesApplet loaded # Security Exception: checkpropsaccess.key # Applet GetTitlesApplet initialized # Applet GetTitlesApplet running In the Netscape Browser: ------------------------ InterClient Driver Not Found Could NOT make connection to database URL: jdbc:interbase://localhost/d:/temp/solvent.gdb Error: No suitable driver ======================================== Test 2: ------- Config: ------- CLASSPATH: Does include 'interclient.jar' Local DIR: Does contain 'interclient.jar' Results: -------- In the Java Console: -------------------- # startApplet: contextID=4 appletID=9026656 newFrameMWContext=8833808 # Starting applet: GetTitlesApplet, appletID=9026656, contextID=4 # Loading classes from downloaded archive file: # file:/D|/temp/interclient.jar # Applet GetTitlesApplet loaded # Security Exception: checkpropsaccess.key # Security Exception: Couldn't connect to 'localhost' with origin from #'local-classpath-classes'. # Applet GetTitlesApplet initialized # Applet GetTitlesApplet running In the Netscape Browser: ------------------------ Could NOT make connection to database URL: jdbc:interbase://localhost/d:/temp/solvent.gdb Error: Your security manager does NOT allow socket connections to localhost on port 3060. See API documentation for class interbase.interclient.BadInstallationException. =================================== Test 3: ------- Config: ------- CLASSPATH: Does include 'interclient.jar' Local DIR: Does NOT contain 'interclient.jar' Results: -------- In the Java Console: -------------------- # Starting applet: GetTitlesApplet, appletID=9975936, contextID=4 # Unable to load archive file:/D|/temp/interclient.jar: # java.io.IOException: Netscape is unable to find the file or # directory named: /D|/temp/interclient.jar # Check the name and try again. # Applet GetTitlesApplet loaded # Security Exception: checkpropsaccess.key # Security Exception: Couldn't connect to 'localhost' with origin from # 'local-classpath-classes'. # Applet GetTitlesApplet initialized # Applet GetTitlesApplet running In the Netscape Browser: ------------------------ Could NOT make connection to database URL: jdbc:interbase://localhost/d:/temp/solvent.gdb Error: Your security manager does NOT allow socket connections to localhost on port 3060. See API documentation for class interbase.interclient.BadInstallationException. ===================================== Test 3: ------- Config: ------- CLASSPATH: IS REMOVED FROM THE MACHINE Local DIR: Does contain 'interclient.jar' Results: -------- In the Java Console: -------------------- Too much stuff. Basically it works and loads all the correct Classes. In the Netscape Browser: ------------------------ No errors and when you click the button it fetches all the records. ============================================
Last Modified: 01-MAY-02