The fоllоwing imаge shоws the dаtа in the table "Products", which is located in an existing SQLite database. Assume that a student has used the SQL Helper plugin in IntelliJ to connect to this database, the same way you did for your Programming Project 8 assignment. The code generated by this plugin for the Products table is shown In the Reference section below. Write some code for the main method that would accomplish the following tasks: Insert a new product to the "Product" table. You may select the data that goes into each field. Delete a product from the "Products" table. Use the last digit of your StudentID number to determine which product is removed. For example, if your StudentID number is V03329331, delete the first item in the table. If your ID number ends with a "0", delete the 10th item in the table. Update the unit price of "Grandma's Boysenberry Spread". Use the last 4 digits of your student ID to determine the price, where the first 2 digits are dollars, and the last 2 digits are cents. For example, if your StudentID number is V03329331, the new price would be 93.31. Perform a query to find all items that have a Discontinued status of 1. Print the result as a DefaultTableModel, showing the ProductID, ProductName, QuantityPerUnit, and UnitPrice. Sort the list in ascending order by ProductName. Print the "Products" table to the terminal. Reference Code This is the code generated by SQL Helper for the Products table within the user's database. package DBHelper;import javax.swing.table.DefaultTableModel;import java.util.ArrayList;public class Products extends DBHelper { private final String TABLE_NAME = "Products"; public static final String ProductID = "ProductID"; public static final String ProductName = "ProductName"; public static final String SupplierID = "SupplierID"; public static final String CategoryID = "CategoryID"; public static final String QuantityPerUnit = "QuantityPerUnit"; public static final String UnitPrice = "UnitPrice"; public static final String UnitsInStock = "UnitsInStock"; public static final String UnitsOnOrder = "UnitsOnOrder"; public static final String ReorderLevel = "ReorderLevel"; public static final String Discontinued = "Discontinued"; private String prepareSQL(String fields, String whatField, String whatValue, String sortField, String sort) { String query = "SELECT "; query += fields == null ? " * FROM " + TABLE_NAME : fields + " FROM " + TABLE_NAME; query += whatField != null && whatValue != null ? " WHERE " + whatField + " = "" + whatValue + """ : ""; query += sort != null && sortField != null ? " order by " + sortField + " " + sort : ""; return query; } public void insert(Integer ProductID, String ProductName, Integer SupplierID, Integer CategoryID, String QuantityPerUnit, Integer UnitPrice, Integer UnitsInStock, Integer UnitsOnOrder, Integer ReorderLevel, String Discontinued) { ProductName = ProductName != null ? """ + ProductName + """ : null; QuantityPerUnit = QuantityPerUnit != null ? """ + QuantityPerUnit + """ : null; Discontinued = Discontinued != null ? """ + Discontinued + """ : null; Object[] values_ar = {ProductID, ProductName, SupplierID, CategoryID, QuantityPerUnit, UnitPrice, UnitsInStock, UnitsOnOrder, ReorderLevel, Discontinued}; String[] fields_ar = {Products.ProductID, Products.ProductName, Products.SupplierID, Products.CategoryID, Products.QuantityPerUnit, Products.UnitPrice, Products.UnitsInStock, Products.UnitsOnOrder, Products.ReorderLevel, Products.Discontinued}; String values = "", fields = ""; for (int i = 0; i < values_ar.length; i++) { if (values_ar[i] != null) { values += values_ar[i] + ", "; fields += fields_ar[i] + ", "; } } if (!values.isEmpty()) { values = values.substring(0, values.length() - 2); fields = fields.substring(0, fields.length() - 2); super.execute("INSERT INTO " + TABLE_NAME + "(" + fields + ") values(" + values + ");"); } } public void delete(String whatField, String whatValue) { super.execute("DELETE from " + TABLE_NAME + " where " + whatField + " = " + whatValue + ";"); } public void update(String whatField, String whatValue, String whereField, String whereValue) { super.execute("UPDATE " + TABLE_NAME + " set " + whatField + " = "" + whatValue + "" where " + whereField + " = "" + whereValue + "";"); } public ArrayList select(String fields, String whatField, String whatValue, String sortField, String sort) { return super.executeQuery(prepareSQL(fields, whatField, whatValue, sortField, sort)); } public ArrayList getExecuteResult(String query) { return super.executeQuery(query); } public void execute(String query) { super.execute(query); } public DefaultTableModel selectToTable(String fields, String whatField, String whatValue, String sortField, String sort) { return super.executeQueryToTable(prepareSQL(fields, whatField, whatValue, sortField, sort)); }}
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