Set: clone()
/*
Output:
[I, P, G, E]
[I, P, G, E]
* */
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.util.Arrays;
import java.util.HashSet;
import java.util.Set;
public class MainClass {
public static void main(String args[]) throws Exception {
String elements[] = { "I", "P", "E", "G", "P" };
Set set = new HashSet(Arrays.asList(elements));
Set set2 = ((Set) ((HashSet) set).clone());
System.out.println(set2);
FileOutputStream fos = new FileOutputStream("set.ser");
ObjectOutputStream oos = new ObjectOutputStream(fos);
oos.writeObject(set);
oos.close();
FileInputStream fis = new FileInputStream("set.ser");
ObjectInputStream ois = new ObjectInputStream(fis);
Set set3 = (Set) ois.readObject();
ois.close();
System.out.println(set3);
}
}
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