This program shows how to use getSerialVersionUID

      
import java.io.ObjectStreamClass;

/**
 * This program shows how to use getSerialVersionUID for a class that isn't in a
 * package and thus not findable to the normal "serialver" tool.
 * 
 * @author Ian Darwin, http://www.darwinsys.com/
 */
public class GetSerVersUID {
  static final String ident = "$Id: GetSerVersUID.java,v 1.5 2004/02/09 03:33:53 ian Exp $";

  public static void main(String[] av) throws Exception {

    // First we construct a Class object for the given class
    Class cl = Class.forName("Candidate");

    // Then an ObjectStreamClass for the given class
    ObjectStreamClass ocl = ObjectStreamClass.lookup(cl);

    // And use the ObjectStreamClass to get the Class'
    // unique SerialVersionUID
    System.out.println("For class " + cl);
    System.out.println("static final long serialVersionUID = "
        + ocl.getSerialVersionUID() + "L;"); // must be long

    // And just for reference...
    System.out.println("(Must range from " + Long.MIN_VALUE + " to "
        + Long.MAX_VALUE + ".)");
  }
}

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This program shows how to use getSerialVersionUID : Serialization « File Input Output « Java

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