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Precasting in java

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Join Date: Feb 2007

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vinod_javas vinod_javas is offline

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Precasting in java

Sep 27th, 2007

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

Adios,

Vinod......

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Join Date: May 2007

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Ezzaral

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Re: Precasting in java

Sep 27th, 2007

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

 Help with Code Tags 
 Java Syntax (Toggle Plain Text) 
List pointList = new ArrayList();
pointList.add( new Point(0,0) );
Point p = (Point)pointList.get(0); // you must cast Object to Point here
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

 Help with Code Tags 
 Java Syntax (Toggle Plain Text) 
List<Point> pointList = new ArrayList<Point>();
pointList.add( new Point(0,0) );
Point p0 = pointList.get(0);  // no need for the cast here
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?