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import java.io.*;
import java.util.*;

class HashTableTest {
    
    public static void main(String[] args) throws FileNotFoundException, IOException, ClassNotFoundException {
        
        Hashtable ht = new Hashtable();
        ht.put(new Integer(1), "One"); ht.put(new Integer(2), "Two"); ht.put(new Integer(3), "Three");
        
        // write to a file named "theHashtable"
        FileOutputStream fos = new FileOutputStream("theHashtable");
        ObjectOutputStream oos = new ObjectOutputStream(fos);
        oos.writeObject(ht);
        oos.flush();
        oos.close();
        fos.close();
        
        // read from the file named "theHashtable"
        FileInputStream fis = new FileInputStream("theHashtable");
        ObjectInputStream ois = new ObjectInputStream(fis);
        Hashtable newHt = (Hashtable)ois.readObject();
        ois.close();
        fis.close();
                
        System.out.println(ht);
        System.out.println(newHt);
        System.out.println(newHt.equals(ht));
    }
}

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