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► KB ► To/From Guides ► VB.Net

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Custom Routines (VB.Net and Java Cross Reference Guide)

By Mike Prestwood

VB.Net versus Java: A side by side comparison between VB.Net and Java.

Language Details

Language Details is kind of a catch all for stuff that didn't make it into language basics nor any other category.

Custom Routines

[Other Languages]

Languages Focus

For non-OOP languages, a custom routine is a function, procedure, or subroutine and for pure OOP languages, a custom routine is a class method. Hybrid languages (both non-OOP and OOP) combine both.

VB.Net: Sub, Function

VB.Net is a fully OOP language so both Subs and Functions are methods of a class. A Sub does not return a value while a Function does.

Syntax Example: 1 certification question.

Private Sub DoSomething(ByVal pMsg As String)
  '...some code.
End Sub
 
Private Function GetAge(ByVal x As String) As Integer
  GetAge = 7
End Function

Java:

Because java is an OOP language, all custom routines belong to a specific class and are therefore referred to as methods.

All methods in Java must return something so even with procedures, you return a "void".

Syntax Example:

public void sayHello(String pName) {
  System.out.println("Hello" + pName);
}

 

public int add(int p1, int p2) {

  return p1 + p2;