Member Avatar for vinod_javas

What is mean by precasting in java can any one give me simple example please...

  • 2 Contributors
  • 1 Reply
  • 111 Views
  • 13 Hours Discussion Span
  • Latest Post Latest Post by Ezzaral
Member Avatar for Ezzaral

Not sure exactly what you are referring to with "precasting". There is casting

List pointList = new ArrayList();
pointList.add( new Point(0,0) );
Point p = (Point)pointList.get(0); // you must cast Object to Point here

or you can use generics to "pre-cast" and declare the type of collection

List<Point> pointList = new ArrayList<Point>();
pointList.add( new Point(0,0) );
Point p0 = pointList.get(0);  // no need for the cast here

Is that what you are wondering about?

Be a part of the DaniWeb community

We're a friendly, industry-focused community of developers, IT pros, digital marketers, and technology enthusiasts meeting, networking, learning, and sharing knowledge.