CODEWITHSUNDEEP
java
user1760174
user1760174

Reputation: 17

passing command line arguments between classes in Java

I have a Java program in which I need to accept the command line arguments in an array as input in the main method, and then need to pass the array to a constructor of another class in the same program. I need to know how to declare the array globally and then how to pass it and take it in the constructor.

Thanks

Upvotes: 0

Views: 4912

Answers (3)

vikiiii
vikiiii

Reputation: 9456

public class Example{

  Example(String s[])
  { 
   AnotherClass ac = new AnotherClass(s);
  }
  public static void main(String[] args){
  int num=args.length;
  String s[]=new String[num]; 
  Example ex = new Example (s);`
  }
}

And you can create AnotherClass

public class AnotherClass{
  AnotherClass(String s[])
  { 
   // array argument constructor
  }
}

You can run using

javac Example.java

java Example

Upvotes: 1

talnicolas
talnicolas

Reputation: 14053

In your class that contains the main method, you could have a class variable like:

String[] cmdLineArgs;

then in the main method:

cmdLineArgs = new String[args.length];
this.cmdLineArgs = args;

and then just implement a getter that will return cmdLineArgs. Then to call another constructor:

YourObject x = new YourObject(yourFirstClass.getCmdLineArgs());

(you don't need all those steps if you're calling this other constructor from the main method of course, you can just call the constructor with args directly)

Upvotes: 0

Aniket Inge
Aniket Inge

Reputation: 25695

class SomeOtherClass{
   public SomeOtherClass(String[] args){
       this.arguments = args;
   }
   private String[] arguments;
}
class YourMainClass{

 public static void main(String[] args){
     SomeOtherClass cl = new SomeOtherClass(args);
    //fanny's your aunt
  }
}

This is how you can pass the arguments to SomeOtherClass's constructor.

Upvotes: 0

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