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NeedCasting.java
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// generics/NeedCasting.java
// (c)2017 MindView LLC: see Copyright.txt
// We make no guarantees that this code is fit for any purpose.
// Visit http://OnJava8.com for more book information.
import java.io.*;
import java.util.*;
public class NeedCasting {
@SuppressWarnings("unchecked")
public void f(String[] args) throws Exception {
ObjectInputStream in = new ObjectInputStream(
new FileInputStream(args[0]));
List<Widget> shapes = (List<Widget>)in.readObject();
}
}