Java™ Application Development on Linux - Dator

290Chapter 12Analysis and Design: Seeking the ObjectsExample 12.1 The Account classpackage net.multitool.core;import net.multitool.util.*;import java.util.*;import java.sql.*;public classAccount{private String name;// A name to identify this accountprivate User owner;// The user assigned to this accountprivate SAMoney total;// Total amt originally allocated to// this accountprivate SAMoney balance;// amt remaining unallocated to any// subaccountsprivate Account parent;// The account which contains this// account as a childprivate HashMap children;// The collection of subaccounts,// by nameprivate static Connection dbConn = null; // JDBC connectionprivate ArrayList payments;// TODO: unimplementedprivate SAMoney unspent;// TODO: unimplemented/*** Create an account, with a pool of dollars to budget.* Use this constructor to create the master account.* Use createSub to create children of this account.*/publicAccount(String name, User owner, String total)throws NumberFormatException{this.name = name;this.owner = owner;this.total = new SAMoney(Double.valueOf(total).doubleValue());this.balance = new SAMoney(Double.valueOf(total).doubleValue());// N.B. must not be the same objectthis.parent = null;this.children = new HashMap();}// Static that connects to the DB and either returns the top account,// or creates it for us.public static Account getTopAccount() throws SQLException {Account topAccount = null;dbConn = DriverManager.getConnection("jdbc:postgresql:budgetPro?user=mschwarz");