Name: rm29839 Date: 09/03/98


package jp.go.etl.takagi.test.bug_deserializing_class_of_primitive_type;
import java.io.*;
public class Test {
    public static void main(String[] args) throws Exception {
        PipedOutputStream os = new PipedOutputStream();
        InputStream is = new PipedInputStream(os);
        ObjectOutput oo = new ObjectOutputStream(os);
        ObjectInput oi = new ObjectInputStream(is);
        oo.writeObject(Integer.class);
        System.out.println(oi.readObject());
        oo.writeObject(int.class);
        System.out.println(oi.readObject());
    }
}
 
> java jp.go.etl.takagi.test.bug_deserializing_class_of_primitive_type.Test
class java.lang.Integer
java.lang.ClassNotFoundException: int
        at java.io.ObjectInputStream.readObject(ObjectInputStream.java:352)
        at java.io.ObjectInputStream.readObject(ObjectInputStream.java:233)
        at jp.go.etl.takagi.test.bug_deserializing_class_of_primitive_type.Test.main(Test.java:12)
(Review ID: 34926)
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Name: skT88420 Date: 09/14/99


Consider the following example:

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

public class Serial implements Serializable {
    Class cl = int.class;

    public static void main(String[] args){
        try {
            FileOutputStream out = new FileOutputStream("tmp");
            ObjectOutputStream ous = new ObjectOutputStream(out);
            ous.writeObject(new Serial());
            ous.close();

            FileInputStream in = new FileInputStream("tmp");
            ObjectInputStream ins = new ObjectInputStream(in);
            Serial s = (Serial)ins.readObject();
            ins.close();
        } catch (Throwable e) {
            System.out.println(e);
        }
    }

}

when run, it produces the following results:

J:\borsotti\jtest>java Serial
java.lang.ClassNotFoundException: int

The same problem occurs if the value of the serializable
field is another primitive class, like e.g. double, void, etc.
(Review ID: 95240)
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