Basic HTML version of Foils prepared 18 May 97

Foil 22 Methods for Vectors

From Java Tutorial - Spring 1997 Part 4: Multithreading, useful Java classes, I/O, Networking, and the future Peking Tutorial, Web Certificate -- Spring-Summer 1997. by Nancy J. McCracken,Geoffrey C. Fox
1 Elements are created with the addElement method:
  • Order missouri = new Order();
  • orders.addElement(missouri);
2 The object missouri of type Order is automatically converted to an Object in vector instance orders defined on previous foil.
3 There are methods for indexing vectors. Like arrays, the indexing is zero-based.
  • x = (Typeofx) v.elementAt(i);
  • v.setElementAt(x,i);
4 The length of the Vector can be obtained:
  • int size = v.size;
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