how to get control on serialization process

interface which makes customezation of serialization is Externalizable .


which contains two methodes , which we need to override in the class where we implement the Externalizable , namely


public void writeExternal(ObjectOutput);


public void readExternal(ObjectInput);


for writing and reading the each type of data we  have methodes avliable in interfaces ObjectOutput and ObjectInput


for ObjectOutput, towrite


we have like  readUTF(by which we can write the data), readLong


(if any examples required please write me @ yagnam.ramesh@gmail.com
)