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how to call a method defined in another file?

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how to call a method defined in another file?

 
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  #1
Jun 16th, 2007
codes in two files. Is there a way to use a method cross files?
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Re: how to call a method defined in another file?

 
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  #2
Jun 16th, 2007
The class calling the method needs a reference to the other class. For example, ClassA instantiates ClassB (Below) and ClassB needs to call a method provided by ClassA. The 'this' keyword can be passed into ClassB's constructor to provide it with a reference to ClassA.

E.g.

Java Syntax (Toggle Plain Text) 
  1.  
  2. public class ClassA{
  3.     ClassB subordinate;
  4.  
  5.     public static void main(String[] args){
  6.         subordinate = new ClassB(this);
  7.     }
  8.  
  9.     public void mymethod(){
  10.         //do something
  11.     }
  12. }
  13. public class ClassB{
  14.     ClassA master;
  15.  
  16.     public ClassB(ClassA master){
  17.         this.master = master;
  18.         master.mymethod();
  19.     }
  20. }
Last edited by Cerberus; Jun 16th, 2007 at 4:00 pm.
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Re: how to call a method defined in another file?

 
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  #3
Jun 16th, 2007
This is very helpful! Thanks.
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Re: how to call a method defined in another file?

 
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  #4
Jun 17th, 2007
but don't go that way. Learn about proper Object Oriented design rather than trying to use Java as if it were a procedural language.
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Re: how to call a method defined in another file?

 
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Jun 17th, 2007
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Originally Posted by dajiebuda View Post
codes in two files. Is there a way to use a method cross files?
what do you mean with use? you can call it by creating the instance of that method
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