Why string has an extra blank when I use EJB business method to get it

Question

I have the following code:
Person bean = home.create("Jon", 10, "Huge", 1.0);
java.util.Enumeration result = home.findAll();
if (result.hasMoreElements()) {
Person bean1 =(Person) javax.rmi.PortableRemoteObject.narrow(result.nextElement(), Person.class);
getTraceWriter().println(" ** name = " + bean1.getName() + ", rank = " + bean1.getRank() +
", power = " + bean1.getPower() + ", rating = " + bean1.getRating());
bean1.remove();
I found the bean1.getName is "Jon " instead of "Jon". why???? Does sb. have a clue?
Thanks,
JST

Answer 1

Here is the code. Thanks very much!
import javax.ejb.*;
import java.sql.*;
import javax.sql.DataSource;
import java.util.Vector;
import java.util.Enumeration;
import javax.naming.Context;
public class PersonBean implements EntityBean {
public String name;
public int rank;
public String power;
public double rating;
public EntityContext context;
private DataSource ds = null;
private String user = "db2admin";
private String password = "db2admin";
* ejbCreate method
* @param name String The person name
* @exception javax.ejb.CreateException
public PersonKey ejbCreate(String name)
throws CreateException {
return ejbCreate(name, 0, "default", 0.0);
* ejbCreate method
* @param name String The person name
* @param rank int The person rank
* @param power String The person power
* @param rating double Rating of the person
* @exception javax.ejb.CreateException
public PersonKey ejbCreate(String name, int rank, String power, double rating)
throws CreateException {
if (name == null || name.length() == 0) {
throw new CreateException("Invalid parameter: name cannot be null");
else if (power == null || power.length() == 0) {
throw new CreateException("Invalid parameter: power cannot be null");
this.name = name;
this.rank = rank;
this.power = power;
this.rating = rating;
Connection con = null;
PreparedStatement ps = null;
try {
System.err.println("before getconnection");
con = this.getConnection();
System.err.println("after getconnection");
ps = con.prepareStatement("insert into TESTMEN values (?,?,?,?)");
ps.setString(1, name);
ps.setInt(2, rank);
ps.setString(3, power);
ps.setDouble(4, rating);
if (ps.executeUpdate() != 1) {
throw new CreateException("Failed to add (" + name + "," + rank + "," +
power + "," + rating + ") to database.");
PersonKey pk = new PersonKey(name);
return pk;
catch (javax.naming.NamingException ne) {
throw new EJBException (ne);
catch (SQLException sqle) {
throw new EJBException(sqle);
finally {
try {
if (ps != null) ps.close();
if (con != null) con.close();
catch (SQLException sqle) {
sqle.printStackTrace();
public void ejbPostCreate(String name, int rank, String power, double rating) {
// empty for now
public void ejbPostCreate(String name) {
// empty for now
* ejbFindPrimaryKey
* Find bean by primary key
* @return PersonKey Primary key object for the bean
* @exception FinderException
* @exception ObjectNotFoundException
public PersonKey ejbFindByPrimaryKey(PersonKey key)
throws FinderException, ObjectNotFoundException {
Connection con = null;
PreparedStatement ps = null;
ResultSet rs = null;
boolean found = false;
boolean multipleFound = false;
try {
con = this.getConnection();
ps = con.prepareStatement("select name from TESTMEN where name = ?");
ps.setString(1, key.name);
rs = ps.executeQuery();
found = rs.next();
if (found) {
multipleFound = rs.next();
if (!multipleFound) {
return key;
else {
throw new FinderException("Multiple objects found with name = " + name);
else {
throw new ObjectNotFoundException("Cannot find object with name = " + name);
catch (javax.naming.NamingException ne) {
throw new EJBException (ne);
catch (SQLException sqle) {
throw new EJBException(sqle);
finally {
try {
if (rs != null) rs.close();
if (ps != null) ps.close();
if (con != null) con.close();
catch (SQLException sqle) {
sqle.printStackTrace();
* setEntityContext method
public void setEntityContext(EntityContext context) {
this.context = context;
* unsetEntityContext method
public void unsetEntityContext() {
context = null;
* ejbFindAll method
* Find all the beans.
* @return java.util.Enumeration Enumeration of all beans
public Enumeration ejbFindAll(){
Connection con = null;
Statement stmt = null;
ResultSet rs = null;
try {
con = this.getConnection();
stmt = con.createStatement();
rs = stmt.executeQuery("select * from TESTMEN");
Vector keys = new Vector();
while (rs.next()) {
keys.addElement(new PersonKey(rs.getString("name")));
return keys.elements();
catch (javax.naming.NamingException ne) {
throw new EJBException (ne);
catch (SQLException sqle) {
throw new EJBException(sqle);
finally {
try {
if (rs != null) rs.close();
if (stmt != null) stmt.close();
if (con != null) con.close();
catch (SQLException sqle) {
sqle.printStackTrace();
* ejbActivate() method
public void ejbActivate() {}
* ejbPassivate method
public void ejbPassivate() {}
* ejbLoad method
public void ejbLoad() {
PersonKey pk = (PersonKey) context.getPrimaryKey();
Connection con = null;
PreparedStatement ps = null;
ResultSet rs = null;
try {
con = this.getConnection();
ps = con.prepareStatement("select * from TESTMEN where name = ?");
ps.setString(1, pk.name);
rs = ps.executeQuery();
if (rs.next()) {
name = pk.name;
rank = rs.getInt("rank");
power = rs.getString("power");
rating = rs.getDouble("rating");
else {
throw new EJBException("No record found in ejbLoad()");
catch (javax.naming.NamingException ne) {
throw new EJBException (ne);
catch (SQLException sqle) {
throw new EJBException(sqle);
finally {
try {
if (rs != null) rs.close();
if (ps != null) ps.close();
if (con != null) con.close();
catch (SQLException sqle) {
sqle.printStackTrace();
* ejbStore method
public void ejbStore() {
Connection con = null;
PreparedStatement ps = null;
try {
con = this.getConnection();
ps = con.prepareStatement("update TESTMEN set " +
"name = ?, rank = ?, power =?, rating = ? where name = ?");
ps.setString(1, name);
ps.setInt(2, rank);
ps.setString(3, power);
ps.setDouble(4, rating);
ps.setString(5, name);
if (ps.executeUpdate() != 1) {
throw new EJBException("Failed in updating database in ejbSotre().");
catch (javax.naming.NamingException ne) {
throw new EJBException (ne);
catch (SQLException sqle) {
throw new EJBException(sqle);
finally {
try {
if (ps != null) ps.close();
if (con != null) con.close();
catch (SQLException sqle) {
sqle.printStackTrace();
* ejbRemove method
public void ejbRemove() {
Connection con = null;
PreparedStatement ps = null;
try {
con = this.getConnection();
ps = con.prepareStatement("delete from TESTMEN where name = ?");
ps.setString(1, name);
if (ps.executeUpdate() != 1) {
throw new EJBException("cannot remove by name = " + name);
catch (javax.naming.NamingException ne) {
throw new EJBException (ne);
catch (SQLException sqle) {
throw new EJBException(sqle);
finally {
try {
if (ps != null) ps.close();
if (con != null) con.close();
catch (SQLException sqle) {
sqle.printStackTrace();