how to pass command line arguments to main method dynamically

Question

I am passing my main class as a command line argument to launch VM  Now i need to pass command line arguments to that main class  Is there any way to do this   this is the way i am doing it      VirtualMachineManager manager   Bootstrap virtualMachineManager        LaunchingConnector connector   manager defaultConnector        Map arguments   connector defaultArguments          Connector Argument arguments get  options    setValue userVMArgs         Connector Argument arguments get  main    setValue cmdLine     here userVMargs is classpath of my main class and the also classpath of the class which is being used to invoke the method of class inside my main class  and cmdLine is having my main class along with the class and its function and i am using eclipse as IDE to develop my project

User · Answer

go to Run Configuration and in argument tab you can write your argument

User · Answer

Run --- gt  Debug Configuration --- gt  YourConfiguration --- gt  Arguments tab

User · Answer

We can pass string value to main method as argument without using commandline argument concept in java through Netbean      package MainClass   import java util Scanner   public class CmdLineArgDemo    static   Scanner readData   new Scanner System in       System out println  Enter any string       String str   readData nextLine     String    str1   str split           System out println str1 length    CmdLineArgDemo main str1           public static void main String    args         for int i   0   i lt args length i              System out print args i                            Output  Enter any string    Coders invent Digital World  Coders invent Digital World

User · Answer

If you want to launch VM by sending arguments  you should send VM arguments and not Program arguments   Program arguments are arguments that are passed to your application  which are accessible via the  args  String array parameter of your main method  VM arguments are arguments such as System properties that are passed to the JavaSW interpreter  The Debug configuration above is essentially equivalent to    java -DsysProp1 sp1 -DsysProp2 sp2 test ArgsTest pro1 pro2 pro3   The VM arguments go after the call to your Java interpreter  ie   java   and before the Java class  Program arguments go after your Java class   Consider a program ArgsTest java   package test   import java io IOException       public class ArgsTest            public static void main String   args  throws IOException                System out println  Program Arguments                 for  String arg   args                    System out println   t    arg                              System out println  System Properties from VM Arguments                String sysProp1    sysProp1               System out println   tName     sysProp1      Value     System getProperty sysProp1                String sysProp2    sysProp2               System out println   tName     sysProp2      Value     System getProperty sysProp2                       If given input as    java -DsysProp1 sp1 -DsysProp2 sp2 test ArgsTest pro1 pro2 pro3    in the commandline  in project bin folder would give the following result    Program Arguments    pro1   pro2   pro3 System Properties from VM Arguments   Name sysProp1  Value sp1   Name sysProp2  Value sp2

[java] how to pass command line arguments to main method dynamically

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