// : c12:serialctl.java
// controlling serialization by adding your own
// writeobject() and readobject() methods.
// from 'thinking in java, 3rd ed.' (c) bruce eckel 2002
// www.bruceeckel.com. see copyright notice in copyright.txt.
import java.io.bytearrayinputstream;
import java.io.bytearrayoutputstream;
import java.io.ioexception;
import java.io.objectinputstream;
import java.io.objectoutputstream;
import java.io.serializable;
public class serialctl implements serializable {
private string a;
private transient string b;
public serialctl(string aa, string bb) {
a = "not transient: " + aa;
b = "transient: " + bb;
}
public string tostring() {
return a + "/n" + b;
}
private void writeobject(objectoutputstream stream) throws ioexception {
stream.defaultwriteobject();
stream.writeobject(b);
}
private void readobject(objectinputstream stream) throws ioexception,
classnotfoundexception {
stream.defaultreadobject();
b = (string) stream.readobject();
}
public static void main(string[] args) throws ioexception,
classnotfoundexception {
serialctl sc = new serialctl("test1", "test2");
system.out.println("before:/n" + sc);
bytearrayoutputstream buf = new bytearrayoutputstream();
objectoutputstream o = new objectoutputstream(buf);
o.writeobject(sc);
// now get it back:
objectinputstream in = new objectinputstream(new bytearrayinputstream(
buf.tobytearray()));
serialctl sc2 = (serialctl) in.readobject();
system.out.println("after:/n" + sc2);
}
} ///:~
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