how to use ArrayList
hello.
this is james mcfadden. i am totally new to ArrayList. how do i modify the following two pieces of code so that i can use ArrayList?
thanks for the help.
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.sql.*;
import java.util.*;
publicclass ProductFormextends JFrame{
JPanel pnlTitle,pnlBody,pnlFooter;
JButton btnDBAdd=new JButton("Add");
JButton btnDBEdit=new JButton("Edit");
JButton btnDBDelete=new JButton("Delete");
JLabel[] lblForm=new JLabel[14];
JLabel lblTitle=new JLabel("Product Form");
JTextField[] txtFlds=new JTextField[60];
String[] listFormNames={"Product Number","Name","Rental Price","Age Category","Type","Year"};
Container contentpane;
int productNumber;
String name;
float rentalPrice;
String ageCategory;
String type;
int year;
DBController dbc=new DBController();
Product p=new Product();
public ProductForm(){
super("Product");
contentpane=getContentPane();
contentpane.setLayout(new BorderLayout());
pnlTitle=new JPanel();
pnlBody=new JPanel();
pnlFooter=new JPanel();
pnlBody.setLayout(new GridLayout(listFormNames.length,2,20,20));
for(int i=0;i<listFormNames.length;i++){
lblForm[i]=new JLabel(listFormNames[i]);
pnlBody.add(lblForm[i]);
txtFlds[i]=new JTextField(25);
pnlBody.add(txtFlds[i]);
}
lblTitle.setForeground(Color.RED);
pnlTitle.add(lblTitle);
pnlFooter.add(btnDBAdd);
pnlFooter.add(btnDBEdit);
pnlFooter.add(btnDBDelete);
contentpane.add(pnlTitle,BorderLayout.NORTH);
contentpane.add(pnlBody,BorderLayout.CENTER);
contentpane.add(pnlFooter,BorderLayout.SOUTH);
pack();
setVisible(true);
btnDBAdd.addActionListener(new ActionListener(){
publicvoid actionPerformed(ActionEvent e){
//get the product number
String s=txtFlds[0].getText();
p.setProductNumber(Integer.parseInt(s));
//get the product name
p.setName(txtFlds[1].getText());
//get the rental price
String s2=txtFlds[2].getText();
float f=Float.parseFloat(s2);
p.setRentalPrice(f);
//get the age category
p.setAgeCategory(txtFlds[3].getText());
p.setType(txtFlds[4].getText());
String s3=txtFlds[5].getText();
p.setYear(Integer.parseInt(s3));
dbc.makeConnection();
dbc.setHostURL();
dbc.insertProduct(p);
dbc.closeDB();
}
});
btnDBEdit.addActionListener(new ActionListener(){
publicvoid actionPerformed(ActionEvent e){
//get the product number
String s=txtFlds[0].getText();
p.setProductNumber(Integer.parseInt(s));
//get the product name
p.setName(txtFlds[1].getText());
dbc.makeConnection();
dbc.setHostURL();
dbc.editProduct(p);
dbc.closeDB();
}
});
btnDBDelete.addActionListener(new ActionListener(){
publicvoid actionPerformed(ActionEvent e){
dbc.makeConnection();
dbc.setHostURL();
dbc.deleteProduct(p);
dbc.closeDB();
}
});
}
publicvoid getInput(){
Scanner sc =new Scanner(System.in);
int i = sc.nextInt();
}
}
publicclass Product{
int productNumber;
String name;
float rentalPrice;
String ageCategory;
String type;
int year;
//setters
publicvoid setProductNumber(int a){
this.productNumber = a;
}
publicvoid setName(String b){
this.name = b;
}
publicvoid setRentalPrice(float c){
this.rentalPrice = c;
}
publicvoid setAgeCategory(String d){
this.ageCategory = d;
}
publicvoid setType(String e){
this.type = e;
}
publicvoid setYear(int f){
this.year = f;
}
//getters
publicint getProductNumber(){
return this.productNumber;
}
public String getName(){
return this.name;
}
publicfloat getRentalPrice(){
return this.rentalPrice;
}
public String getAgeCategory(){
return this.ageCategory;
}
public String getType(){
return this.type;
}
publicint getYear(){
return this.year;
}
}
>
