Setting Up Tomcat For Remote Debugging Windows

Debugging a J2EE application is one of the most basic needs of a developer. We can debug a standalone application easily by adding one breakpoint and running the debugger.However debugging a remotely hosted application needs to have a certain application server specific settings

For this you need to configure JPDA (Java Platform Debugger Architecture) in your tomcat.

Add the following two lines in the first line of tomcat's "startup.bat"

set JPDA_ADDRESS=8000

set JPDA_TRANSPORT=dt_socket




Your startup.bat may now be like - 

set JPDA_ADDRESS=8000

set JPDA_TRANSPORT=dt_socket

if "%OS%" == "Windows_NT" setlocal

and so on 

Replace the line 

call "%EXECUTABLE%" start %CMD_LINE_ARGS%

with 

call "%EXECUTABLE%" jpda start %CMD_LINE_ARGS%

Restart the server. 

Your tomcat is setup for remote debugging. 

How to find which OS you are working on ?

       For some projects you will need to find out which OS you are working on or on which Operating System the code is deployed. This may be needed in certain cases like - File System Handling ,
Data upload system, Electronic Records System etc because the file organization of different operating systems are indifferent.

For the list of other system properties/ System environment variables please click here

       The following code sample in Java gives this -

 package com.util;  
 public class FindOS{  
      private static String OS = System.getProperty("os.name").toLowerCase();  
      public static void main(String[] args) {  
           System.out.println(OS);  
           if (isWindows()) {  
                System.out.println("This is Windows");  
           } else if (isMac()) {  
                System.out.println("This is Mac");  
           } else if (isUnix()) {  
                System.out.println("This is Unix or Linux");  
           } else if (isSolaris()) {  
                System.out.println("This is Solaris");  
           } else {  
                System.out.println("Your OS is not support!!");  
           }  
      }  
      public static boolean isWindows() {  
           return (OS.indexOf("win") >= 0);  
      }  
      public static boolean isMac() {  
           return (OS.indexOf("mac") >= 0);  
      }  
      public static boolean isUnix() {  
           return (OS.indexOf("nix") >= 0 || OS.indexOf("nux") >= 0 || OS.indexOf("aix") > 0 );  
      }  
      public static boolean isSolaris() {  
           return (OS.indexOf("sunos") >= 0);  
      }  
 }