serialize a java object with collection

Question

i wanted to serialize an object with a collection of its own type ,serializing gives no issues but on deserializing the object doesent deserialize its collections ,i have the following object

package com.mars.distribution.model;
import java.io.Serializable;
import java.sql.Date;
import java.util.ArrayList;
import java.util.LinkedList;`
import java.util.List;
import javax.persistence.CascadeType;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.JoinColumn;
import javax.persistence.JoinTable;
import javax.persistence.ManyToOne;
import javax.persistence.OneToMany;
import javax.persistence.Table;
@Entity
@Table(name="Intermediary_freeFlow",schema="distribution")
public class IntermediaryFreeFlow  implements Cloneable,Serializable{
    @Id
    @GeneratedValue(strategy=GenerationType.SEQUENCE )
    @Column(name="INTERM_ID")
    private int intermId;

    @OneToMany(cascade=CascadeType.ALL)
    @JoinTable(name="INTERMEDIARY_FREEFLOW_RELATION",schema="distribution")
    private List<IntermediaryFreeFlow> intermediaryCollection=new ArrayList<IntermediaryFreeFlow>();


    public int getIntermId() {
        return intermId;
    }
    public void setIntermId(int intermId) {
        this.intermId = intermId;
    }
    public List<IntermediaryFreeFlow> getIntermediaryCollection() {
        return intermediaryCollection;
    }
    public void setIntermediaryCollection(
            List<IntermediaryFreeFlow> intermediaryCollection) {
        this.intermediaryCollection = intermediaryCollection;
    }
}

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Answer 1

Can you try replacing List with ArrayList in your code. Reason is ArrayList implements Serializable interface, where as List doesn't probably that could be the cause.