[Ed]

I think that the problem is in the constructor:
try this

Code:

package version01;

public class Message
{
    private String message;

    public void Message(String message)
    {
        this.message= new String(message);
    }
    
    public String getMessage()
    {
        return message;
    }
}

javabean.jsp

Code:

        <jsp:useBean id="m" scope="page" class="version01.Message" />
        <% m.setMessage("Hello"); %>
        <%=m.getMessage()%>