What happens to abstract classes now?
As we can write default implementations to the methods in a interface, what happens to abstract classes now?
just because you can doesn't mean you should. And this is a clear case of you should not.
Allowing implementation in interfaces is a dirty hack they needed to put in to be able to bolt on some of the other stuff without breaking forward compatibility with existing code.
That doesn't make it a good idea, in fact it's a pretty good indication that the stuff they hacked in this way is itself not a good idea.
Similar Messages
-
What is an abstract class and what does it do compare to other classes?
I'm having some trouble trying to understand it.
Message was edited by:
xc100s it not obvious that the OP is a worthless troll?Looking at his/her recent posts, I wouldn't say so.
S/he looks like a newbie who is asking basic
questions
and is rather reluctant to follow links or read
tutorial pages,
but I haven't seen actual troll behaviour.My first impression was that this was another Charles_Bronson, due to the countless threads that ask basic, open-ended questions.
Then again, CB never posted any actual code, so who knows?
One can never know really and it's unfair to judge someone unheard. That's >why I usually start by giving a very brief reply to invite to a dialog.
And it's not just about replying to the OP. Sometimes a discussion of >general interest develops even from a seemingly trivial question.I see your point. However, the discussions that seem to stem from these types of threads seem to be irrelevant to Java, if you know what I mean. -
What happened to my iPad now that iOS 5.0.1 ruined it.
My iPad was the best thing ever. I never had any issues....until I upgraded to iOS 5.0.1. I like the new features....but now
- apps will close for no reason.
- when I expand photos or text with my Ingres thy are blurry.
What's happened?If the Reset doesn't work, try a Restore. Note that it's nowhere near as quick as a Reset. From iTunes, select the iPad/iPod and then select the Summary tab. Follow directions for Restore and be sure to say "yes" to the backup. You will be warned that all data (apps, music, movies, etc.) will be erased but, as the Restore finishes, you will be asked if you wish the contents of the backup to be copied to the iPad/iPod. Again, say "yes."
-
I never received the verification email or the verify now link it never became available after several attempts after resubmitting verification email to unlock my Apple ID ?
The following may help:
If you didn't receive your Apple ID verification or reset email
or
Apple ID: Contacting Apple for help with Apple ID account security -
Casting & abstract class & final method
what is casting abstract class & final method in ABAP Objects give some scenario where actually use these.
Hi Sri,
I'm not sure we can be any more clear.
An Abstract class can not be instantiated. It can only be used as the superclass for it's subclasses. In other words it <b>can only be inherited</b>.
A Final class cannot be the superclass for a subclass. In other words <b>it cannot be inherited.</b>
I recommend the book <a href="http://www.sappress.com/product.cfm?account=&product=H1934">ABAP Objects: ABAP Programming in SAP NetWeaver</a>
Cheers
Graham -
How to use function of an abstract class??
Hi all,
I want to use the format(object obj) function of the package java.text.Format. But as the Format class is an abstract class i could not instantiate it, so that i can call the format(object obj) method using the dot(.) operator.
I know what is an abstract class. i've studied and tried to understand. as everybody knows, studied the perfect example(because i've read it in all the abstract class tutorial, books) of the Shape class. But still i dont understand how am i going to use that format(object obj) method. Please help me..Instead of using the abstract class Format use the
concrete classes DecimalFormat
SimpleDateFormat etc check java.text APIS
http://java.sun.com/j2se/1.4.2/docs/api
Hi!! Thanks both of you.
If Sun has a abstract class then there must be a
concrete class which extends that abstract class .It
is always better to check the APIWhat do you mean by this line. Is it true for all the abstract classes in the jdk? -
Getting an abstract class working
Simply put, something is going wrong with my abstract class, now my assignArray method wont work and my frame wont compile at all anymore.
import javax.swing.*;
import java.awt.Color;
import java.awt.Container;
import java.awt.FlowLayout;
import java.awt.event.*;
import java.text.DecimalFormat;
public abstract class bankPresentation extends JFrame implements ActionListener {
//define the frame properties
private static final int FRAME_WIDTH = 300;
private static final int FRAME_HEIGHT = 600;
private static final int FRAME_X_ORIGIN = 150;
private static final int FRAME_Y_ORIGIN = 250;
private static final int BUTTON_WIDTH = 80;
private static final int BUTTON_HEIGHT = 30;
//define all the frame elements
JRadioButton depositRadioButton = new JRadioButton("Deposit");
JRadioButton withdrawRadioButton = new JRadioButton("Withdraw");
ButtonGroup bankButtonGroup = new ButtonGroup();
JLabel amountLabel;
JTextField amountField;
JTextArea textArea;
JScrollPane textBoxScroll;
JButton newAccountButton;
JButton summaryButton;
JButton depositWithdrawButton;
double initialAmountDouble;
DecimalFormat formatDecimal = new DecimalFormat("$0.00");
//create a new array, size is 10
bankSummary customerList[] = new bankSummary[10];
public static void main(String[] args) {
bankPresentation frame = new bankPresentation();
frame.setVisible(true);
public bankPresentation() {
Container contentPane;
//create the deposit and withdraw radio buttons, put them in a group
//and add them to the frame
bankButtonGroup.add(depositRadioButton);
bankButtonGroup.add(withdrawRadioButton);
setSize(FRAME_WIDTH, FRAME_HEIGHT);
setResizable(false);
setTitle("Ch13 Project");
setLocation(FRAME_X_ORIGIN, FRAME_Y_ORIGIN);
contentPane = getContentPane();
contentPane.setLayout(new FlowLayout());
contentPane.add(withdrawRadioButton);
contentPane.add(depositRadioButton);
//add a large text area to the pane
textArea = new JTextArea();
textArea.setColumns(25);
textArea.setRows(20);
textArea.setLineWrap(true);
textBoxScroll = new JScrollPane(textArea);
textBoxScroll
.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_ALWAYS);
textArea.setBorder(BorderFactory.createLineBorder(Color.RED));
// Set to non edit
textArea.setEditable(false);
contentPane.add(textBoxScroll);
//create new buttons to create accounts, deposit/withdraw with existing ones, and
//get a statement with existing ones
newAccountButton = new JButton("Create Account");
newAccountButton.setSize(BUTTON_WIDTH, BUTTON_HEIGHT);
contentPane.add(newAccountButton);
summaryButton = new JButton("Summary");
summaryButton.setSize(BUTTON_WIDTH, BUTTON_HEIGHT);
contentPane.add(summaryButton);
depositWithdrawButton = new JButton("Deposit/Withdraw");
depositWithdrawButton.setSize(BUTTON_WIDTH, BUTTON_HEIGHT);
contentPane.add(depositWithdrawButton);
//add actionlisteners to all buttons
summaryButton.addActionListener(this);
newAccountButton.addActionListener(this);
depositRadioButton.addActionListener(this);
withdrawRadioButton.addActionListener(this);
depositWithdrawButton.addActionListener(this);
//initialize the array with some existing accounts
assignArray();
abstract void assignArray() {
for (int i = 0; i < customerList.length; i++) {
customerList[i] = new bankSummary();
customerList[0].setValues("Bob", "Ghost", "1234", "Savings", 500);
customerList[1].setValues("Joe", "Shmo", "1333", "Checking", 600);
customerList[2].setValues("Jack", "Biggs", "9023", "Savings", 200);
public void actionPerformed(ActionEvent event) {
int arrayIndexInt = 3;
// Determine source of event
Object sourceObject = event.getSource();
//if a new account is created, ask for first name, last name, pin number, and whether it
//be a checking or savings account, and the initial amount you're depositing
if (sourceObject == newAccountButton) {
String fNameString = JOptionPane.showInputDialog("First Name: ");
String lNameString = JOptionPane.showInputDialog("Last Name: ");
String pinString = JOptionPane
.showInputDialog("Desired Pin Number: ");
String accountType = JOptionPane
.showInputDialog("Checking or Savings Account? Enter (Checking or Savings)");
String initialAmountStr = JOptionPane
.showInputDialog("Initial Deposit Amount: ");
double initialAmountDouble = Double.parseDouble(initialAmountStr);
customerList[arrayIndexInt].setValues(fNameString, lNameString,
pinString, accountType, initialAmountDouble);
arrayIndexInt += 1;
JOptionPane.showMessageDialog(null, "Account Created!");
//if the summary button is pressed, ask for the first name on the account
//then ask for the pin, display the balance for that said account
if (sourceObject == summaryButton) {
String nameVerifyStr = JOptionPane
.showInputDialog("Firstname on Account: ");
String pinVerifyStr = JOptionPane.showInputDialog("Pin Number: ");
if (nameVerifyStr.equals(customerList[0].getFirstName())
&& pinVerifyStr.equals(customerList[0].getPin())) {
textArea.append("Customer: " + customerList[0].getFirstName()
+ " " + customerList[0].getLastName() + "\nAccount: "
+ customerList[0].getAccountType() + "\nBalance: "
+ formatDecimal.format(customerList[0].getBalance()));
if (nameVerifyStr.equals(customerList[1].getFirstName())
&& pinVerifyStr.equals(customerList[1].getPin())) {
textArea.append("Customer: " + customerList[1].getFirstName()
+ " " + customerList[1].getLastName() + "\nAccount: "
+ customerList[1].getAccountType() + "\nBalance: "
+ formatDecimal.format(customerList[1].getBalance()));
if (nameVerifyStr.equals(customerList[2].getFirstName())
&& pinVerifyStr.equals(customerList[2].getPin())) {
textArea.append("Customer: " + customerList[2].getFirstName()
+ " " + customerList[2].getLastName() + "\nAccount: "
+ customerList[2].getAccountType() + "\nBalance: "
+ formatDecimal.format(customerList[2].getBalance()));
if (nameVerifyStr.equals(customerList[3].getFirstName())
&& pinVerifyStr.equals(customerList[3].getPin())) {
textArea.append("Customer: " + customerList[3].getFirstName()
+ " " + customerList[3].getLastName() + "\nAccount: "
+ customerList[3].getAccountType() + "\nBalance: "
+ formatDecimal.format(customerList[3].getBalance()));
if (nameVerifyStr.equals(customerList[4].getFirstName())
&& pinVerifyStr.equals(customerList[4].getPin())) {
textArea.append("\nCustomer: " + customerList[4].getFirstName()
+ " " + customerList[4].getLastName() + "\nAccount: "
+ customerList[4].getAccountType() + "\nBalance: "
+ formatDecimal.format(customerList[4].getBalance()));
if (nameVerifyStr.equals(customerList[5].getFirstName())
&& pinVerifyStr.equals(customerList[5].getPin())) {
textArea.append("\nCustomer: " + customerList[5].getFirstName()
+ " " + customerList[5].getLastName() + "\nAccount: "
+ customerList[5].getAccountType() + "\nBalance: "
+ formatDecimal.format(customerList[5].getBalance()));
if (nameVerifyStr.equals(customerList[6].getFirstName())
&& pinVerifyStr.equals(customerList[6].getPin())) {
textArea.append("\nCustomer: " + customerList[6].getFirstName()
+ " " + customerList[6].getLastName() + "\nAccount: "
+ customerList[6].getAccountType() + "\nBalance: "
+ formatDecimal.format(customerList[6].getBalance()));
if (nameVerifyStr.equals(customerList[7].getFirstName())
&& pinVerifyStr.equals(customerList[7].getPin())) {
textArea.append("\nCustomer: " + customerList[7].getFirstName()
+ " " + customerList[7].getLastName() + "\nAccount: "
+ customerList[7].getAccountType() + "\nBalance: "
+ formatDecimal.format(customerList[7].getBalance()));
if (nameVerifyStr.equals(customerList[8].getFirstName())
&& pinVerifyStr.equals(customerList[8].getPin())) {
textArea.append("\nCustomer: " + customerList[8].getFirstName()
+ " " + customerList[8].getLastName() + "\nAccount: "
+ customerList[8].getAccountType() + "\nBalance: "
+ formatDecimal.format(customerList[8].getBalance()));
if (nameVerifyStr.equals(customerList[9].getFirstName())
&& pinVerifyStr.equals(customerList[9].getPin())) {
textArea.append("\nCustomer: " + customerList[9].getFirstName()
+ " " + customerList[9].getLastName() + "\nAccount: "
+ customerList[9].getAccountType() + "\nBalance: "
+ formatDecimal.format(customerList[9].getBalance()));
textArea.append("\n===========================");
//if the deposit/withdraw button is pressed, ask how much to deposit or withdraw
//depending on which radio button is selected
//Verify the name and pin on the account
if (sourceObject == depositWithdrawButton) {
String nameVerifyStr = JOptionPane
.showInputDialog("Firstname on Account: ");
String pinVerifyStr = JOptionPane.showInputDialog("Pin Number: ");
if (depositRadioButton.isSelected()) {
String depositAmountStr = JOptionPane
.showInputDialog("Deposit Amount: ");
double depositAmountDouble = Double
.parseDouble(depositAmountStr);
if (nameVerifyStr.equals(customerList[0].getFirstName())
&& pinVerifyStr.equals(customerList[0].getPin())) {
double balanceDouble = customerList[0].getBalance();
balanceDouble += depositAmountDouble;
customerList[0].setValues(customerList[0].getFirstName(),
customerList[0].getLastName(), customerList[0]
.getPin(),
customerList[0].getAccountType(), balanceDouble);
textArea.append("\nCustomer: "
+ customerList[0].getFirstName() + " "
+ customerList[0].getLastName() + "\nAccount: "
+ customerList[0].getAccountType() + "\nPin: "
+ customerList[0].getPin() + "\nChanges: +"
+ depositAmountDouble + "\nBalance: "
+ formatDecimal.format(balanceDouble));
if (nameVerifyStr.equals(customerList[1].getFirstName())
&& pinVerifyStr.equals(customerList[1].getPin())) {
double balanceDouble = customerList[1].getBalance();
balanceDouble += depositAmountDouble;
customerList[1].setValues(customerList[1].getFirstName(),
customerList[1].getLastName(), customerList[1]
.getPin(),
customerList[1].getAccountType(), balanceDouble);
textArea.append("\nCustomer: "
+ customerList[1].getFirstName() + " "
+ customerList[1].getLastName() + "\nAccount: "
+ customerList[1].getAccountType() + "\nPin: "
+ customerList[1].getPin() + "\nChanges: +"
+ depositAmountDouble + "\nBalance: "
+ formatDecimal.format(balanceDouble));
if (nameVerifyStr.equals(customerList[2].getFirstName())
&& pinVerifyStr.equals(customerList[2].getPin())) {
double balanceDouble = customerList[2].getBalance();
balanceDouble += depositAmountDouble;
customerList[2].setValues(customerList[2].getFirstName(),
customerList[2].getLastName(), customerList[2]
.getPin(),
customerList[2].getAccountType(), balanceDouble);
textArea.append("\nCustomer: "
+ customerList[2].getFirstName() + " "
+ customerList[2].getLastName() + "\nAccount: "
+ customerList[2].getAccountType() + "\nPin: "
+ customerList[2].getPin() + "\nChanges: +"
+ depositAmountDouble + "\nBalance: "
+ formatDecimal.format(balanceDouble));
if (nameVerifyStr.equals(customerList[3].getFirstName())
&& pinVerifyStr.equals(customerList[3].getPin())) {
double balanceDouble = customerList[3].getBalance();
balanceDouble += depositAmountDouble;
customerList[3].setValues(customerList[3].getFirstName(),
customerList[3].getLastName(), customerList[3]
.getPin(),
customerList[3].getAccountType(), balanceDouble);
textArea.append("\nCustomer: "
+ customerList[3].getFirstName() + " "
+ customerList[3].getLastName() + "\nAccount: "
+ customerList[3].getAccountType() + "\nPin: "
+ customerList[3].getPin() + "\nChanges: +"
+ depositAmountDouble + "\nBalance: "
+ formatDecimal.format(balanceDouble));
if (nameVerifyStr.equals(customerList[4].getFirstName())
&& pinVerifyStr.equals(customerList[4].getPin())) {
double balanceDouble = customerList[4].getBalance();
balanceDouble += depositAmountDouble;
customerList[4].setValues(customerList[4].getFirstName(),
customerList[4].getLastName(), customerList[4]
.getPin(),
customerList[4].getAccountType(), balanceDouble);
textArea.append("\nCustomer: "
+ customerList[4].getFirstName() + " "
+ customerList[4].getLastName() + "\nAccount: "
+ customerList[4].getAccountType() + "\nPin: "
+ customerList[4].getPin() + "\nChanges: +"
+ depositAmountDouble + "\nBalance: "
+ formatDecimal.format(balanceDouble));
if (nameVerifyStr.equals(customerList[5].getFirstName())
&& pinVerifyStr.equals(customerList[5].getPin())) {
double balanceDouble = customerList[5].getBalance();
balanceDouble += depositAmountDouble;
customerList[5].setValues(customerList[5].getFirstName(),
customerList[5].getLastName(), customerList[5]
.getPin(),
customerList[5].getAccountType(), balanceDouble);
textArea.append("\nCustomer: "
+ customerList[5].getFirstName() + " "
+ customerList[5].getLastName() + "\nAccount: "
+ customerList[5].getAccountType() + "\nPin: "
+ customerList[5].getPin() + "\nChanges: +"
+ depositAmountDouble + "\nBalance: "
+ formatDecimal.format(balanceDouble));
if (nameVerifyStr.equals(customerList[6].getFirstName())
&& pinVerifyStr.equals(customerList[6].getPin())) {
double balanceDouble = customerList[6].getBalance();
balanceDouble += depositAmountDouble;
customerList[6].setValues(customerList[6].getFirstName(),
customerList[6].getLastName(), customerList[6]
.getPin(),
customerList[6].getAccountType(), balanceDouble);
textArea.append("\nCustomer: "
+ customerList[6].getFirstName() + " "
+ customerList[6].getLastName() + "\nAccount: "
+ customerList[6].getAccountType() + "\nPin: "
+ customerList[6].getPin() + "\nChanges: +"
+ depositAmountDouble + "\nBalance: "
+ formatDecimal.format(balanceDouble));
if (nameVerifyStr.equals(customerList[7].getFirstName())
&& pinVerifyStr.equals(customerList[7].getPin())) {
double balanceDouble = customerList[7].getBalance();
balanceDouble += depositAmountDouble;
customerList[7].setValues(customerList[7].getFirstName(),
customerList[7].getLastName(), customerList[7]
.getPin(),
customerList[7].getAccountType(), balanceDouble);
textArea.append("\nCustomer: "
+ customerList[7].getFirstName() + " "
+ customerList[7].getLastName() + "\nAccount: "
+ customerList[7].getAccountType() + "\nPin: "
+ customerList[7].getPin() + "\nChanges: +"
+ depositAmountDouble + "\nBalance: "
+ formatDecimal.format(balanceDouble));
if (nameVerifyStr.equals(customerList[8].getFirstName())
&& pinVerifyStr.equals(customerList[8].getPin())) {
double balanceDouble = customerList[8].getBalance();
balanceDouble += depositAmountDouble;
customerList[8].setValues(customerList[8].getFirstName(),
customerList[8].getLastName(), customerList[8]
.getPin(),
customerList[8].getAccountType(), balanceDouble);
textArea.append("\nCustomer: "
+ customerList[8].getFirstName() + " "
+ customerList[8].getLastName() + "\nAccount: "
+ customerList[8].getAccountType() + "\nPin: "
+ customerList[8].getPin() + "\nChanges: +"
+ depositAmountDouble + "\nBalance: "
+ formatDecimal.format(balanceDouble));
if (nameVerifyStr.equals(customerList[9].getFirstName())
&& pinVerifyStr.equals(customerList[9].getPin())) {
double balanceDouble = customerList[9].getBalance();
balanceDouble += depositAmountDouble;
customerList[9].setValues(customerList[9].getFirstName(),
customerList[9].getLastName(), customerList[9]
.getPin(),
customerList[9].getAccountType(), balanceDouble);
textArea.append("\nCustomer: "
+ customerList[9].getFirstName() + " "
+ customerList[9].getLastName() + "\nAccount: "
+ customerList[9].getAccountType() + "\nPin: "
+ customerList[9].getPin() + "\nChanges: +"
+ depositAmountDouble + "\nBalance: "
+ formatDecimal.format(balanceDouble));
if (withdrawRadioButton.isSelected()) {
String withdrawAmountStr = JOptionPane
.showInputDialog("Withdraw Amount: ");
double withdrawAmountDouble = Double
.parseDouble(withdrawAmountStr);
double chargeDouble;
if (withdrawAmountDouble > 2000) {
chargeDouble = 0.75;
} else if (withdrawAmountDouble > 750) {
chargeDouble = 0.50;
} else {
chargeDouble = 0;
if (nameVerifyStr.equals(customerList[0].getFirstName())
&& pinVerifyStr.equals(customerList[0].getPin())) {
double balanceDouble = customerList[0].getBalance();
if (withdrawAmountDouble + chargeDouble > balanceDouble) {
JOptionPane.showMessageDialog(null,
"Withdraw Exceeds Balance!");
} else {
balanceDouble -= (withdrawAmountDouble + chargeDouble);
customerList[0].setValues(customerList[0].getFirstName(),
customerList[0].getLastName(), customerList[0]
.getPin(),
customerList[0].getAccountType(), balanceDouble);
textArea.append("\nCustomer: "
+ customerList[0].getFirstName() + " "
+ customerList[0].getLastName() + "\nAccount: "
+ customerList[0].getAccountType() + "\nPin: "
+ customerList[0].getPin() + "\nChanges: -"
+ withdrawAmountDouble + "\nBalance: "
+ formatDecimal.format(balanceDouble));
if (nameVerifyStr.equals(customerList[1].getFirstName())
&& pinVerifyStr.equals(customerList[1].getPin())) {
double balanceDouble = customerList[1].getBalance();
if (withdrawAmountDouble + chargeDouble > balanceDouble) {
JOptionPane.showMessageDialog(null,
"Withdraw Exceeds Balance!");
} else {
balanceDouble -= (withdrawAmountDouble + chargeDouble);
customerList[1].setValues(customerList[1].getFirstName(),
customerList[1].getLastName(), customerList[1]
.getPin(),
customerList[1].getAccountType(), balanceDouble);
textArea.append("\nCustomer: "
+ customerList[1].getFirstName() + " "
+ customerList[1].getLastName() + "\nAccount: "
+ customerList[1].getAccountType() + "\nPin: "
+ customerList[1].getPin() + "\nChanges: -"
+ withdrawAmountDouble + "\nBalance: "
+ formatDecimal.format(balanceDouble));
if (nameVerifyStr.equals(customerList[2].getFirstName())
&& pinVerifyStr.equals(customerList[2].getPin())) {
double balanceDouble = customerList[2].getBalance();
if (withdrawAmountDouble + chargeDouble > balanceDouble) {
JOptionPane.showMessageDialog(null,
"Withdraw Exceeds Balance!");
} else {
balanceDouble -= (withdrawAmountDouble + chargeDouble);
customerList[2].setValues(customerList[2].getFirstName(),
customerList[2].getLastName(), customerList[2]
.getPin(),
customerList[2].getAccountType(), balanceDouble);
textArea.append("\nCustomer: "
+ customerList[2].getFirstName() + " "
+ customerList[2].getLastName() + "\nAccount: "
+ customerList[2].getAccountType() + "\nPin: "
+ customerList[2].getPin() + "\nChanges: -"
+ withdrawAmountDouble + "\nBalance: "
+ formatDecimal.format(balanceDouble));
if (nameVerifyStr.equals(customerList[3].getFirstName())
&& pinVerifyStr.equals(customerList[3].getPin())) {
double balanceDouble = customerList[3].getBalance();
if (withdrawAmountDouble + chargeDouble > balanceDouble) {
JOptionPane.showMessageDialog(null,
"Withdraw Exceeds Balance!");
} else {
balanceDouble -= (withdrawAmountDouble + chargeDouble);
customerList[3].setValues(customerList[3].getFirstName(),
customerList[3].getLastName(), customerList[3]
.getPin(),
customerList[3].getAccountType(), balanceDouble);
textArea.append("\nCustomer: "
+ customerList[3].getFirstName() + " "
+ customerList[3].getLastName() + "\nAccount: "
+ customerList[3].getAccountType() + "\nPin: "
+ customerList[3].getPin() + "\nChanges: -"
+ withdrawAmountDouble + "\nBalance: "
+ formatDecimal.format(balanceDouble));
if (nameVerifyStr.equals(customerList[4].getFirstName())
&& pinVerifyStr.equals(customerList[4].getPin())) {
double balanceDouble = customerList[4].getBalance();
if (withdrawAmountDouble + chargeDouble > balanceDouble) {
JOptionPane.showMessageDialog(null,
"Withdraw Exceeds Balance!");
} else {
balanceDouble -= (withdrawAmountDouble + chargeDouble);
customerList[4].setValues(customerList[4].getFirstName(),
customerList[4].getLastName(), customerList[4]
.getPin(),
customerList[4].getAccountType(), balanceDouble);
textArea.append("\nCustomer: "
+ customerList[4].getFirstName() + " "
+ customerList[4].getLastName() + "\nAccount: "
+ customerList[4].getAccountType() + "\nPin: "
+ customerList[4].getPin() + "\nChanges: -"
+ withdrawAmountDouble + "\nBalance: "
+ formatDecimal.format(balanceDouble));
if (nameVerifyStr.equals(customerList[5].getFirstName())
&& pinVerifyStr.equals(customerList[5].getPin())) {
double balanceDouble = customerList[5].getBalance();
if (withdrawAmountDouble + chargeDouble > balanceDouble) {
JOptionPane.showMessageDialog(null,
"Withdraw Exceeds Balance!");
} else {
balanceDouble -= (withdrawAmountDouble + chargeDouble);
customerList[5].setValues(customerList[5].getFirstName(),
customerList[5].getLastName(), customerList[5]
.getPin(),
customerList[5].getAccountType(), balanceDouble);
textArea.append("\nCustomer: "
+ customerList[5].getFirstName() + " "
+ customerList[5].getLastName() + "\nAccount: "
+ customerList[5].getAccountType() + "\nPin: "
+ customerList[5].getPin() + "\nChanges: -"
+ withdrawAmountDouble + "\nBalance: "
+ formatDecimal.format(balanceDouble));
if (nameVerifyStr.equals(customerList[6].getFirstName())
&& pinVerifyStr.equals(customerList[6].getPin())) {
double balanceDouble = customerList[6].getBalance();
if (withdrawAmountDouble + chargeDouble > balanceDouble) {
JOptionPane.showMessageDialog(null,
"Withdraw Exceeds Balance!");
} else {
balanceDouble -= (withdrawAmountDouble + chargeDouble);
customerList[6].setValues(customerList[6].getFirstName(),
customerList[6].getLastName(), customerList[6]
.getPin(),
customerList[6].getAccountType(), balanceDouble);
textArea.append("\nCustomer: "
+ customerList[6].getFirstName() + " "
+ customerList[6].getLastName() + "\nAccount: "
+ customerList[6].getAccountType() + "\nPin: "
+ customerList[6].getPin() + "\nChanges: -"
+ withdrawAmountDouble + "\nBalance: "
+ formatDecimal.format(balanceDouble));
if (nameVerifyStr.equals(customerList[7].getFirstName())
&& pinVerifyStr.equals(customerList[7].getPin())) {
double balanceDouble = customerList[7].getBalance();
if (withdrawAmountDouble + chargeDouble > balanceDouble) {
JOptionPane.showMessageDialog(null,
"Withdraw Exceeds Balance!");
} else {
balanceDouble -= (withdrawAmountDouble + chargeDouble);
customerList[7].setValues(customerList[7].getFirstName(),
customerList[7].getLastName(), customerList[7]
.getPin(),
customerList[7].getAccountType(), balanceDouble);
textArea.append("\nCustomer: "
+ customerList[7].getFirstName() + " "
+ customerList[7].getLastName() + "\nAccount: "
+ customerList[7].getAccountType() + "\nPin: "
+ customerList[7].getPin() + "\nChanges: -"
+ withdrawAmountDouble + "\nBalance: "
+ formatDecimal.format(balanceDouble));
if (nameVerifyStr.equals(customerList[8].getFirstName())
&& pinVerifyStr.equals(customerList[8].getPin())) {
double balanceDouble = customerList[8].getBalance();
if (withdrawAmountDouble + chargeDouble > balanceDouble) {
JOptionPane.showMessageDialog(null,
"Withdraw Exceeds Balance!");
} else {
balanceDouble -= (withdrawAmountDouble + chargeDouble);
customerList[8].setValues(customerList[8].getFirstName(),
customerList[8].getLastName(), customerList[8]
.getPin(),
customerList[8].getAccountType(), balanceDouble);
textArea.append("\nCustomer: "
+ customerList[8].getFirstName() + " "
+ customerList[8].getLastName() + "\nAccount: "
+ customerList[8].getAccountType() + "\nPin: "
+ customerList[8].getPin() + "\nChanges: -"
+ withdrawAmountDouble + "\nBalance: "
+ formatDecimal.format(balanceDouble));
if (nameVerifyStr.equals(customerList[9].getFirstName())
&& pinVerifyStr.equals(customerList[9].getPin())) {
double balanceDouble = customerList[9].getBalance();
if (withdrawAmountDouble + chargeDouble > balanceDouble) {
JOptionPane.showMessageDialog(null,
"Withdraw Exceeds Balance!");
} else {
balanceDouble -= (withdrawAmountDouble + chargeDouble);
customerList[9].setValues(customerList[9].getFirstName(),
customerList[9].getLastName(), customerList[9]
.getPin(),
customerList[9].getAccountType(), balanceDouble);
textArea.append("\nCustomer: "
+ customerList[9].getFirstName() + " "
+ customerList[9].getLastName() + "\nAccount: "
+ customerList[9].getAccountType() + "\nPin: "
+ customerList[9].getPin() + "\nChanges: -"
+ withdrawAmountDouble + "\nBalance: "
+ formatDecimal.format(balanceDouble));
}Any suggestions would be much appreciated
- Thanks - GoOsE(1) thanks for the wall of code.
(2) thanks for providing readers with the compilation errors.
(3) why are you using camelcase for Class names?
[*READ THIS*|http://mindprod.com/jgloss/abstract.html]
the errors seem very straight forward to me:
bankPresentation.java:34: cannot find symbol
symbol : class bankSummary
location: class bankPresentation
bankSummary customerList[] = new bankSummary[10];
^
bankPresentation.java:34: cannot find symbol
symbol : class bankSummary
location: class bankPresentation
bankSummary customerList[] = new bankSummary[10];
^
bankPresentation.java:38: bankPresentation is abstract; cannot be instantiated
bankPresentation frame = new bankPresentation();
^
bankPresentation.java:103: abstract methods cannot have a body <---- PAY ATTENTION
abstract void assignArray() {
^
4 errors
Tool completed with exit code 1 -
I have not used Java for long time, I downloaded the latest J2SE v1.4.1 today, but I couldn't find javac.exe under bin folder, anybody can tell me what happened to javac.exe now ?
Sun stopped including it due to a lawsuit by M$...
No, seriously, it's there.
Did you check in the \j2sdk1.4.1\bin directory? If it's not there,
it appears you didn't download the correct thing. Download from the column headed "SDK", not "JRE" -
I was working on a cover letter in Pages when i either accidentally typed a hotkey, or clicked on something. I dont know what happened but my doc now looks rather strange. I'm very new to Apple, iWork and Pages, so I don't know my way around this software yet. I tried to find a solution for this bizarre issue, but without fully understanding the problem, I'm stuck. I decided my only hope was to post a screenshot here and hope someone could explain to me what I've done.
I replaced the actual text with gibberish due to the personal information included in the original doc. Can anyone explain these dashes or what is going on here? I want my doc to go back to normal.It looks like it is in outline mode. Try clicking the outline icon in the toolbar to toggle it off.
-
WHAT HAPPENED TO MY LAST QUESTION?
LAST QUESTION WAS ABOUT AN ALERT what happened:TypeError: Components.classes['@mozilla.org/extensions/manager;1'] is undefined
HOW DO I RESOLVE?over here - https://support.mozilla.com/en-US/questions/853719?s=&as=s
-
In Pages, In the past, I was able to edit a template and "save a version" to update the template. Now i have to rename the template to save the changes. Why is this happening? what happen to "save a version"? its no longer an option under "file". And I can no longer open the actual template, when template is clicked, it automaticaly opens an "untitled" version???
In your description you say the first document opens as the Title you gave it.
Templates always open as Untitled so it sounds like you have saved a regular document, perhaps into your templates folder which is possible.
Since you have already worked on it and it has been previously saved, Lion will now Save for you and Save a Version is available
The other document does open as Untitled so sounds like a real template and as Peggy has pointed out will not have either Revert nor Save a Version until you Save it and have changed something in it.
This is a classic example of just how Apple's supposedly "simplification" of the process, is leading to confusion of what has happened. That the conditions and resulting actions from those conditions is so convoluted says it all.
It all reminds me of the Monty Python Life of Brian sketch with the "simplified" John Cleese instructions to the class, as to if you have a brother in an older dorm whether to hang your hat and bag on the hooks provided. The trouble is Apple does not get the joke, that it is transforming itself into a frequently self contradictory bumbling bureacracy. The price of unchallenged self appointed geniushood.
The incoherent half baked stumbling juggernaut has reached new triumphs with its edict on enforced Sandboxing on developers when it is unable to follow even its own instructions.
Peter -
What is the point of an abstract class?
ok lets say there was a subclass that inhereited another subclass...like a class Person, a class Student, and a class GraduateStudent; why would i want to make the class person abstract and have a abstract void display(); in it if i want to override that method in the subclasses lower on the inheritance tree? Wouldn't it do the same thing to just make a normal class Person and just not have a void display...and the other 2 over ride it anyways so i seriously dont see what the point of abstract classes are
ok lets say there was a subclass that inhereited
another subclass...like a class Person, a class
Student, and a class GraduateStudent; why would i
want to make the class person abstract and have a
abstract void display(); Because all Persons are required to be able to display(), but there's no reasonable common default behavior for display() that you can put in the base class.
Abstract methods say, "Everything of this type must be able to do this, but it's up to the individual implementations to figure out *how* to do it."
in it if i want to override
that method in the subclasses lower on the
inheritance tree? Wouldn't it do the same thing to
just make a normal class Person and just not have a
void display..Then you couldn't do this: Person p = getAPersonThatMightBeAStudentOrWhateverWeDoNotKnowWhat();
p.display();or this:
void doPersonStuff(Person p) {
p.display();
Person s1 = new Student();
Student s2 = new Student();
Person t1 = new Teacher();
Teacher t2 = new Teacher();
doPersonStuff(s1);
doPersonStuff(s2);
doPersonStuff(t1);
doPersonStuf(t2);
.and the other 2 over ride it anyways
so i seriously dont see what the point of abstract
classes areI hope you do now.
Message was edited by:
jverd -
I found My iPhone contacts on my friends Iphone we both have 4s! But we use the same apple ID and ICloud ID! How can undo what happened? all my private stuff is now on his phone!!! help me plz!!?
Of course if you are both connected to the same iCloud account you have the same contacts - what did you expect?. The contacts live on the server and are read from there by the devices; so as you've both managed to sync your contacts up to iCloud they are now inextricably mixed. You can only delete your contacts by deleting individual ones, and doing that will delete them from your phone as well.
You can only unravel this by
1. In the iCloud contacts page at http://icloud.com, select all the contacts, click on the cogwheel icon at bottom left and choose 'Export vCard'.
2. Sign out of System Preferences>iCloud
3. Create a new Apple ID and open a new iCloud account with it for your own use.
4. Import the vCard back into the iCloud contacts page.
5. Go to http://icloud.com and sign in with the original ID. This is now his ID. Work through the contacts individually deleting the ones you don't want him to have. When done sign out and advise him to change his password.
6. Go to the new iCloud account and delete his contacts individually.
Of course if you have also been syncing calendars and using the same email address there are problems with doing this. -
What is the diff b/w Abstract class and an interface ?
Hey
I am always confused as with this issue : diff b/w Abstract class and an interface ?
Which is more powerful in what situation.
Regards
VinayHi, Don't worry I am teach you
Abstract class and Interface
An abstract class can have instance methods that implement a default behavior. An Interface can only declare constants and instance methods, but cannot implement default behavior and all methods are implicitly abstract. An interface has all public members and no implementation. An abstract class is a class which may have the usual flavors of class members (private, protected, etc.), but has some abstract methods.
Edited by SASIKUMARA
SIT INNOVATIONS- Chennai
Message was edited by:
sasikumara
Message was edited by:
sasikumara -
I erased an iphone on find my iphone , so i wanted to know what happened and I erased my without a sim card and now I says I cant go on it until i put in a sim card. Did i ruin the phone please help thanks.
You did not ruin the phone, you will need a sim card to activate the phone and then connect the phone to itunes and do a restore from back up.
http://support.apple.com/kb/HT1414
Maybe you are looking for
-
I would like to connect my T61 laptop to a plasma TV that has an SVGA input. Their is no SVGA port on the T61. Could I use the 15 pin VGA one and what would I need as a connector? I found an inexpensive connector which states: "This adapter works w
-
Odd WindowsXP networking issues
Well, previously I had no trouble accessing the shared folders on my PC from my iMac. Somewhere along the way, things stopped working properly, but I was never able to point to any specific event that preceded the problem. The Mac can see the PC and
-
I want to make a mesh simplification program implementing vertex clustering. I have a program that reads an .obj file.It converts it to a shape3d, makes a GeometryInfo out of it and reads it's coordinates.I then implement tha algorithm and have an ar
-
hi i need query to find out for one perticular row from parent table ,,which references how many rows in how many child tables , and child to child tables. in herirachy fashion. if anybody know please help me
-
How to define JDNI resource to look up from ldap root
Hi , Can someone please help? I am stuck.... In my application, I need to perform some modification which requires fully distinguished name. At the moment the jndi resource configurated using jndi-lookup-name="dc=actd,dc=admin,dc=misk,dc=com,dc=au" s