Java - Почему не работает CardLayout? Наличие ошибок
ОБНОВЛЕННЫЙ КОД, чтобы ПОКАЗАТЬ ВСЕ КЛАССЫ
Person В классе есть сеттеры и геттеры, потому что в конечном итоге у меня будет пользовательский ввод. (Пока жесткое кодирование) Вот некоторый код, создающий адресную книгу. Пока у меня есть 4 панели, которые я хочу переключать в зависимости от кнопок, которые я нажимаю. Я изначально использовал GridBagLayout вместе с BorderLayout, но решил CardLayout правильный путь? Я пытался реализовать это CardLayout но получаю ошибку.
Exception in thread "main": java.lang.NullPointerException
at JTableSortingPerson.<init>(JTableSortingPerson.java:30)
at AddressBook.main(AddressBook.java:100)
Линия 30 - это только я, CardLayout в MainPanel,
Строка 100 - это создание объекта класса в моем главном окне для установки видимого макета и т. Д.
У меня также возникают проблемы с определением размеров каждой панели, чтобы они подходили по размеру или автоматически меняли размер JFrame, Я начинающий / студент информатики. Любая помощь будет оценена. ТАКЖЕ, это мой первый раз, используя этот сайт, извините.
Учебный класс AddressBook:
import java.util.*;
import javax.swing.JFrame;
public class AddressBook{
public static void main(String[] args) {
JTableSortingPerson p = new JTableSortingPerson();
p.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
p.setSize(800, 450);
p.setVisible(true);
}
}
Учебный класс Person:
public class Person {
String FirstName;
String MiddleName;
String LastName;
String StreetAddress;
int AptNumber;
String City;
String State;
int ZipCode;
String PhoneNumber; //change back to long after trialList
String Email;
String Group;
String SpecialDate;
String Comments;
public Person(String fn, String mn, String ln, String st, int apt, String City, String State, int zip, String phone, String email, String group, String date, String comments){
FirstName = fn;
MiddleName = mn;
LastName = ln;
StreetAddress = st;
AptNumber = apt;
this.City = City;
this.State = State;
ZipCode = zip;
PhoneNumber = phone;
this.Email = email;
this.Group = group;
SpecialDate = date;
this.Comments = comments;
}
public String toString(){
return "First Name: " + FirstName +
" \nMiddle Name: " + MiddleName +
" \nLast Name: " + LastName +
" \nStreet Address: " + StreetAddress +
" \nApt: " + AptNumber +
" \nCity: " + City +
" \nState: " + State +
" \nZip: " + ZipCode +
" \nPhone: " + PhoneNumber +
" \nEmail: " + Email +
" \nGroup: " + Group +
" \nDates: " + SpecialDate +
" \nComments " + "***" + Comments + "***\n\n";
}
public String getFirstName() {
return FirstName;
}
public void setFirstName(String firstName) {
this.FirstName = firstName;
}
public String getMiddleName() {
return MiddleName;
}
public void setMiddleName(String middleName) {
this.MiddleName = middleName;
}
public String getLastName() {
return LastName;
}
public void setLastName(String lastName) {
this.LastName = lastName;
}
public String getStreetAddress() {
return StreetAddress;
}
public void setStreetAddress(String streetAddress) {
this.StreetAddress = streetAddress;
}
public int getAptNumber() {
return AptNumber;
}
public void setAptNumber(int aptNumber) {
this.AptNumber = aptNumber;
}
public String getCity() {
return City;
}
public void setCity(String city) {
this.City = city;
}
public String getState() {
return State;
}
public void setState(String state) {
this.State = state;
}
public int getZipCode() {
return ZipCode;
}
public void setZipCode(int zipCode) {
this.ZipCode = zipCode;
}
public String getPhoneNumber() {
return PhoneNumber;
}
public void setPhoneNumber(String phoneNumber) {
this.PhoneNumber = phoneNumber;
}
public String getEmail() {
return Email;
}
public void setEmail(String email) {
this.Email = email;
}
public String getGroup() {
return Group;
}
public void setGroup(String group) {
this.Group = group;
}
public String getSpecialDate() {
return SpecialDate;
}
public void setSpecialDate(String specialDate) {
this.SpecialDate = specialDate;
}
public String getComments() {
return Comments;
}
public void setComments(String comments) {
this.Comments = comments;
}
}
Учебный класс PersonTable:
import javax.swing.table.AbstractTableModel;
import java.util.*;
public class PersonTable extends AbstractTableModel {
private static final int COLUMN_FIRST_NAME = 0;
private static final int COLUMN_LAST_NAME = 1;
private static final int COLUMN_PHONE_NUMBER = 2;
private static final int COLUMN_CITY = 3;
private String[] columnNames = {"First Name", "Last Name", "Phone Number", "City"};
private List<Person> listPerson;
public PersonTable(List<Person> listPerson){
this.listPerson = listPerson;
}
@Override
public int getColumnCount() {
return columnNames.length;
}
@Override
public int getRowCount() {
return listPerson.size();
}
@Override
public Object getValueAt(int rowIndex, int columnIndex) {
Person person = listPerson.get(rowIndex);
Object retVal = null;
switch(columnIndex){
case COLUMN_FIRST_NAME: retVal = person.getFirstName(); break;
case COLUMN_LAST_NAME: retVal = person.getLastName(); break;
case COLUMN_PHONE_NUMBER: retVal = person.getPhoneNumber(); break;
case COLUMN_CITY: retVal = person.getCity(); break;
default: throw new IllegalArgumentException("Invalid column index.");
}
return retVal;
}
@Override
public String getColumnName(int columnIndex){
return columnNames[columnIndex];
}
@Override
public Class<?> getColumnClass(int columnIndex){
if(listPerson.isEmpty()) return Object.class;
else return getValueAt(0, columnIndex).getClass();
}
}
Учебный класс PersonTable2:
import javax.swing.table.AbstractTableModel;
import java.util.*;
public class PersonTable2 extends AbstractTableModel{
private static final int COLUMN_FIRST_NAME = 0;
private static final int COLUMN_MIDDLE_NAME = 1;
private static final int COLUMN_LAST_NAME = 2;
private static final int COLUMN_PHONE_NUMBER = 3;
private static final int COLUMN_CITY = 4;
private static final int COLUMN_STATE = 5;
private static final int COLUMN_EMAIL = 6;
private static final int COLUMN_GROUP = 7;
private String[] columnNames = {"First Name", "Middle Name", "Last Name", "Phone Number", "City", "State", "Email", "Group"};
private List<Person> listPerson;
public PersonTable2(List<Person> listPerson){
this.listPerson = listPerson;
}
@Override
public int getColumnCount() {
return columnNames.length;
}
@Override
public int getRowCount() {
return listPerson.size();
}
@Override
public Object getValueAt(int rowIndex, int columnIndex) {
Person person = listPerson.get(rowIndex);
Object retVal = null;
switch(columnIndex){
case COLUMN_FIRST_NAME: retVal = person.getFirstName(); break;
case COLUMN_MIDDLE_NAME: retVal = person.getMiddleName(); break;
case COLUMN_LAST_NAME: retVal = person.getLastName(); break;
case COLUMN_PHONE_NUMBER: retVal = person.getPhoneNumber(); break;
case COLUMN_CITY: retVal = person.getCity(); break;
case COLUMN_STATE: retVal = person.getState(); break;
case COLUMN_EMAIL: retVal = person.getEmail(); break;
case COLUMN_GROUP: retVal = person.getGroup(); break;
default: throw new IllegalArgumentException("Invalid column index.");
}
return retVal;
}
@Override
public String getColumnName(int columnIndex){
return columnNames[columnIndex];
}
@Override
public Class<?> getColumnClass(int columnIndex){
if(listPerson.isEmpty()) return Object.class;
else return getValueAt(0, columnIndex).getClass();
}
}
Учебный класс JTableSortingPerson:
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.File;
import java.io.FileNotFoundException;
import java.util.List; //important
import java.util.*;
import javax.swing.*;
import javax.swing.table.TableModel;
import javax.swing.table.TableRowSorter;
@SuppressWarnings("serial")
public class JTableSortingPerson extends JFrame{
private JPanel mainPanel, panel, panel2, introPanel, newUserPanel, editPanel;
private JTextArea textArea;
private JTextArea textArea2;
private JTextField searchInput, userName, passWord, newUser, newPass, confirmPassword;
private JTextField searchInput2;
private JLabel statusBar, user, pass, newUserName, newPassword, newConfirmPassword;
private JLabel statusBar2;
private JTable table, table2;
private JButton DetailButton, SearchButton, AllButton, LogInButton, NewButton, saveButton, cancelButton, addButton, removeButton, editButton;
private JButton DetailButton2, SearchButton2, goBack, LogInButton2, NewButton2, saveButton2, cancelButton2, addButton2, removeButton2, editButton2;
private CardLayout cardLayout = new CardLayout();
List<Person> listPerson = createListPerson();
public JTableSortingPerson() {
super();
mainPanel.setLayout(cardLayout);
//***********************************************
//LOG IN PANEL
//***********************************************
introPanel = new JPanel();
GridBagLayout GridLayout = new GridBagLayout();
introPanel.setLayout(GridLayout);
GridBagConstraints c = new GridBagConstraints();
//add(introPanel, BorderLayout.CENTER);
mainPanel.add(introPanel, "Log In");
NewButton = new JButton("New User");
NewButton.addActionListener(new ButtonListener());
LogInButton = new JButton("Log In");
LogInButton.addActionListener(new ButtonListener());
userName = new JTextField();
passWord = new JTextField();
user = new JLabel("Username:");
pass = new JLabel("Password:");
c.fill = GridBagConstraints.HORIZONTAL;
c.gridx = 0;
c.gridy = 1;
introPanel.add(user, c);
c.fill = GridBagConstraints.HORIZONTAL;
c.gridx = 0;
c.gridy = 3;
introPanel.add(pass, c);
c.fill = GridBagConstraints.HORIZONTAL;
c.gridx = 0;
c.gridy = 2;
c.gridwidth = 1000;
introPanel.add(userName, c);
c.fill = GridBagConstraints.HORIZONTAL;
c.gridx = 0;
c.gridy = 4;
c.gridwidth = 1000;
introPanel.add(passWord, c);
c.fill = GridBagConstraints.HORIZONTAL;
c.gridx = 0;
c.gridy = 5;
c.gridwidth = 1000;
introPanel.add(LogInButton, c);
c.fill = GridBagConstraints.HORIZONTAL;
c.gridx = 0;
c.gridy = 6;
c.gridwidth = 1000;
introPanel.add(NewButton, c);
pack();
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setLocationRelativeTo(null);
//***********************************************
//MAIN TABLE PANEL
//***********************************************
panel = new JPanel();
GridBagLayout GridLayout2 = new GridBagLayout();
panel.setLayout(GridLayout2);
GridBagConstraints c2 = new GridBagConstraints();
PersonTable tableModel = new PersonTable(listPerson);
table = new JTable(tableModel);
table.setAutoCreateRowSorter(true);
DetailButton = new JButton("Details");
DetailButton.addActionListener(new ButtonListener());
SearchButton = new JButton("Search");
SearchButton.addActionListener(new ButtonListener());
AllButton = new JButton("Display All");
AllButton.addActionListener(new ButtonListener());
addButton = new JButton("Add Person");
addButton.addActionListener(new ButtonListener());
removeButton = new JButton("Remove Person");
removeButton.addActionListener(new ButtonListener());
searchInput = new JTextField();
textArea = new JTextArea();
statusBar = new JLabel();
//add(panel, BorderLayout.CENTER);
mainPanel.add(panel, "Edit Person Table");
add(statusBar, BorderLayout.SOUTH);
panel.add(new JScrollPane(table), c2);
c2.fill = GridBagConstraints.HORIZONTAL;
c2.gridx = 0;
c2.gridy = 1;
c2.gridwidth = 1000;
panel.add(searchInput, c2);
c2.fill = GridBagConstraints.HORIZONTAL;
c2.gridx = 0;
c2.gridy = 2;
c2.gridwidth = 1000;
panel.add(SearchButton, c2);
c2.fill = GridBagConstraints.HORIZONTAL;
c2.gridx = 0;
c2.gridy = 3;
c2.gridwidth = 1000;
panel.add(DetailButton, c2);
c2.fill = GridBagConstraints.HORIZONTAL;
c2.gridx = 0;
c2.gridy = 4;
c2.gridwidth = 1000;
panel.add(AllButton, c2);
c2.fill = GridBagConstraints.HORIZONTAL;
c2.gridx = 0;
c2.gridy = 5;
c2.gridwidth = 1000;
panel.add(addButton, c2);
c2.fill = GridBagConstraints.HORIZONTAL;
c2.gridx = 0;
c2.gridy = 6;
c2.gridwidth = 1000;
panel.add(removeButton, c2);
pack();
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setLocationRelativeTo(null);
panel.setVisible(false);
//***********************************************
//CREATE NEW USER PANEL
//***********************************************
newUserPanel = new JPanel();
GridBagLayout GridBagLayout3 = new GridBagLayout();
newUserPanel.setLayout(GridBagLayout3);
GridBagConstraints c3 = new GridBagConstraints();
//add(newUserPanel, BorderLayout.CENTER);
mainPanel.add(newUserPanel, "New User");
newUser = new JTextField();
newPass = new JTextField();
confirmPassword = new JTextField();
newUserName = new JLabel("New Username:");
newPassword = new JLabel("New Password:");
newConfirmPassword = new JLabel("Confirm Password");
saveButton = new JButton("Save");
saveButton.addActionListener(new ButtonListener());
cancelButton = new JButton("Cancel");
cancelButton.addActionListener(new ButtonListener());
c3.fill = GridBagConstraints.HORIZONTAL;
c3.gridx = 0;
c3.gridy = 1;
c3.gridwidth = 1000;
newUserPanel.add(newUserName, c3);
c3.fill = GridBagConstraints.HORIZONTAL;
c3.gridx = 0;
c3.gridy = 2;
c3.gridwidth = 1000;
newUserPanel.add(newUser, c3);
c3.fill = GridBagConstraints.HORIZONTAL;
c3.gridx = 0;
c3.gridy = 3;
c3.gridwidth = 1000;
newUserPanel.add(newPassword, c3);
c3.fill = GridBagConstraints.HORIZONTAL;
c3.gridx = 0;
c3.gridy = 4;
c3.gridwidth = 1000;
newUserPanel.add(newPass, c3);
c3.fill = GridBagConstraints.HORIZONTAL;
c3.gridx = 0;
c3.gridy = 5;
c3.gridwidth = 1000;
newUserPanel.add(newConfirmPassword, c3);
c3.fill = GridBagConstraints.HORIZONTAL;
c3.gridx = 0;
c3.gridy = 6;
c3.gridwidth = 1000;
newUserPanel.add(confirmPassword, c3);
c3.fill = GridBagConstraints.HORIZONTAL;
c3.gridx = 0;
c3.gridy = 7;
c3.gridwidth = 1000;
newUserPanel.add(saveButton, c3);
c3.fill = GridBagConstraints.HORIZONTAL;
c3.gridx = 0;
c3.gridy = 8;
c3.gridwidth = 1000;
newUserPanel.add(cancelButton, c3);
pack();
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setLocationRelativeTo(null);
newUserPanel.setVisible(false);
//***********************************************
//MAIN TABLE PANEL2
//***********************************************
panel2 = new JPanel();
GridBagLayout GridLayout4 = new GridBagLayout();
panel2.setLayout(GridLayout4);
GridBagConstraints c4 = new GridBagConstraints();
PersonTable2 tableModel2 = new PersonTable2(listPerson);
table2 = new JTable(tableModel2);
table2.setAutoCreateRowSorter(true);
DetailButton2 = new JButton("Details");
DetailButton2.addActionListener(new ButtonListener());
SearchButton2 = new JButton("Search");
SearchButton2.addActionListener(new ButtonListener());
goBack = new JButton("Back");
goBack.addActionListener(new ButtonListener());
searchInput2 = new JTextField();
textArea2 = new JTextArea();
statusBar2 = new JLabel();
//add(panel2, BorderLayout.CENTER);
mainPanel.add(panel2, "All Person Table");
add(statusBar2, BorderLayout.SOUTH);
panel2.add(new JScrollPane(table2), c4);
c4.fill = GridBagConstraints.HORIZONTAL;
c4.gridx = 0;
c4.gridy = 1;
c4.gridwidth = 1000;
panel2.add(searchInput2, c4);
c4.fill = GridBagConstraints.HORIZONTAL;
c4.gridx = 0;
c4.gridy = 2;
c4.gridwidth = 1000;
panel2.add(SearchButton2, c4);
c4.fill = GridBagConstraints.HORIZONTAL;
c4.gridx = 0;
c4.gridy = 3;
c4.gridwidth = 1000;
panel2.add(DetailButton2, c4);
c4.fill = GridBagConstraints.HORIZONTAL;
c4.gridx = 0;
c4.gridy = 4;
c4.gridwidth = 1000;
panel2.add(goBack, c4);
pack();
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setLocationRelativeTo(null);
panel2.setVisible(false);
//*********CARD LAYOUT*********
//mainPanel.add(introPanel, "Log In");
//mainPanel.add(newUserPanel, "New User");
//mainPanel.add(panel, "Edit Person Table");
//mainPanel.add(panel2, "All Person Table");
this.setContentPane(mainPanel);
cardLayout.show(mainPanel, "introPanel");
}
public List<Person> createListPerson(){
ArrayList<Person> retVal = new ArrayList<Person>();
retVal.add(new Person("Nicolas", "Lawrence", "Soto", "10513 Demilo Pl", 110, "Orlando", "FL", 32836, "3052159446", "nsoto0216@hotmail.com", "Self", "02/16/1991", "I am a student."));
retVal.add(new Person("Sebastian", "Matias", "Soto", "10513 Demilo Pl", 110, "Orlando", "FL", 32836, "3213559306", "ssoto1005@hotmail.com", "Family", "10/05/1992", "My little brother."));
retVal.add(new Person("Montserrat", "Soto", "Casco", "12401 nw 185 st", 0, "Miami", "FL", 33161, "3052023390", "msoto0331@gmail.com", "Family", "03/31/1987", "My sister."));
retVal.add(new Person("Marcelo", "Suarez", "Soto", "4420 nw 16 st", 203, "Miami", "FL", 33055, "3213559355", "chefchileno3@hotmail.com", "Family", "10/28/1955", "My Father."));
retVal.add(new Person("Olga", "Beatriz", "Munizaga", "4420 nw 16 st", 203, "Miami", "FL", 33055, "3213559356", "omunizaga0326@hotmail.com", "Family", "03/26/1959", "My Mother."));
retVal.add(new Person("Linda", "Cecilia", "Chavez", "3256 nw 12 st", 0, "Miami", "FL", 33056, "3056234456", "lindizee09@hotmail.com", "Friend", "10/10/1991", "ex girlfriend."));
retVal.add(new Person("Laura", "Perez", "Carrasco", "500 Pinnacle Cove", 203, "Orlando", "FL", 32078, "4072180248", "lcarrasco0325@hotmail.com", "Friend", "03/25/1991", "ex girlfriend."));
retVal.add(new Person("Jenn", "", "Ortiz", "2034 Lanstar Blvd", 0, "Orlando", "FL", 32724, "8084735466", "jenn456@gmail.com", "Friend", "07/17/1993", "crazy girl"));
retVal.add(new Person("Cristian", "", "Camacho", "4556 Americana blvd", 308, "Orlando", "FL", 32856, "4076557890", "chrisc176@hotmail.com", "Friend", "12/02/1989", ""));
retVal.add(new Person("Gabriela", "", "Valdez", "3004 Watercrest ln", 109, "Orlando", "FL", 32747, "4073066789", "gabbyvaldez@gmail.com", "Friend", "07/15/1992", "Moved to California"));
retVal.add(new Person("Devin", "", "Delaney", "", 0, "Orlando", "FL", 32836, "4074259556", "ddevin64@hotmail.com", "Coworker", "02/23/1993", "my favorite coworker"));
return retVal;
}
public class ButtonListener implements ActionListener {
@Override
public void actionPerformed(ActionEvent e) {
if (e.getSource() == DetailButton) {
newUserPanel.invalidate();
newUserPanel.setVisible(false);
introPanel.invalidate();
introPanel.setVisible(false);
panel2.invalidate();
panel2.setVisible(false);
panel.validate();
panel.setVisible(true);
int row = table.getSelectedRow();
if (row == -1) {
statusBar.setText("Make a selection");
JOptionPane.showMessageDialog(null, "No Selection was made");
} else {
statusBar.setText("Showing details...");
row = table.convertRowIndexToModel(table.getSelectedRow());
JOptionPane.showMessageDialog(null, listPerson.get(row));
}
} else if (e.getSource() == SearchButton) {
newUserPanel.invalidate();
newUserPanel.setVisible(false);
introPanel.invalidate();
introPanel.setVisible(false);
panel2.invalidate();
panel2.setVisible(false);
panel.validate();
panel.setVisible(true);
JTextFieldActionPerformed(e);
} else if (e.getSource() == AllButton) {
statusBar.setText("Showing all people...");
/*JTextArea textArea = new JTextArea(listPerson.toString());
JScrollPane scroll = new JScrollPane(textArea);
JDialog displayAll = new JDialog();
displayAll.setVisible(true);
displayAll.setSize(350, 750);
displayAll.add(scroll);*/
statusBar.setText("Done");
introPanel.invalidate();
introPanel.setVisible(false);
newUserPanel.invalidate();
newUserPanel.setVisible(false);
panel.invalidate();
panel.setVisible(false);
panel2.validate();
panel2.setVisible(true);
} else if (e.getSource() == addButton){
} else if (e.getSource() == removeButton){
newUserPanel.invalidate();
newUserPanel.setVisible(false);
introPanel.invalidate();
introPanel.setVisible(false);
panel2.invalidate();
panel2.setVisible(false);
panel.validate();
panel.setVisible(true);
int row = table.getSelectedRow();
if (row == -1) {
JOptionPane.showMessageDialog(null, "No Selection was made");
} else {
row = table.convertRowIndexToModel(table.getSelectedRow());
listPerson.remove(row);
table.addNotify();
//JOptionPane.showMessageDialog(null, listPerson.get(row));
}
} else if (e.getSource() == DetailButton2) {
panel.invalidate();
panel.setVisible(false);
newUserPanel.invalidate();
newUserPanel.setVisible(false);
introPanel.invalidate();
introPanel.setVisible(false);
panel2.validate();
panel2.setVisible(true);
int row = table2.getSelectedRow();
if (row == -1) {
statusBar2.setText("Make a selection");
JOptionPane.showMessageDialog(null, "No Selection was made");
} else {
statusBar2.setText("Showing details...");
row = table2.convertRowIndexToModel(table2.getSelectedRow());
JOptionPane.showMessageDialog(null, listPerson.get(row));
}
} else if (e.getSource() == SearchButton2) {
panel.invalidate();
panel.setVisible(false);
newUserPanel.invalidate();
newUserPanel.setVisible(false);
introPanel.invalidate();
introPanel.setVisible(false);
panel2.validate();
panel2.setVisible(true);
JTextFieldActionPerformed2(e);
} else if (e.getSource() == goBack) {
/*JTextArea textArea = new JTextArea(listPerson.toString());
JScrollPane scroll = new JScrollPane(textArea);
JDialog displayAll = new JDialog();
displayAll.setVisible(true);
displayAll.setSize(350, 750);
displayAll.add(scroll);*/
statusBar2.setText("Done");
introPanel.invalidate();
introPanel.setVisible(false);
newUserPanel.invalidate();
newUserPanel.setVisible(false);
panel2.invalidate();
panel2.setVisible(false);
panel.validate();
panel.setVisible(true);
} else if (e.getSource() == LogInButton){
introPanel.invalidate();
introPanel.setVisible(false);
newUserPanel.invalidate();
newUserPanel.setVisible(false);
panel2.invalidate();
panel2.setVisible(false);
panel.validate();
panel.setVisible(true);
//pack();
//JOptionPane.showMessageDialog(null, "You attempted to Log In");
} else if (e.getSource() == NewButton){
introPanel.invalidate();
introPanel.setVisible(false);
panel.invalidate();
panel.setVisible(false);
panel2.invalidate();
panel2.setVisible(false);
newUserPanel.validate();
newUserPanel.setVisible(true);
//pack();
//JOptionPane.showMessageDialog(null, "You attempted to create an account");
} else if (e.getSource() == saveButton){
} else if (e.getSource() == cancelButton){
panel.invalidate();
panel.setVisible(false);
panel2.invalidate();
panel2.setVisible(false);
newUserPanel.invalidate();
newUserPanel.setVisible(false);
introPanel.validate();
introPanel.setVisible(true);
}
}
}
public void JTextFieldActionPerformed(java.awt.event.ActionEvent evt)
{
TableRowSorter<TableModel> sorter = new TableRowSorter<TableModel>(((PersonTable) table.getModel()));
sorter.setRowFilter(RowFilter.regexFilter("(?i)" + searchInput.getText())); //"(?i)" for case sensitivity
table.setRowSorter(sorter);
}
public void JTextFieldActionPerformed2(java.awt.event.ActionEvent evt)
{
TableRowSorter<TableModel> sorter = new TableRowSorter<TableModel>(((PersonTable2) table2.getModel()));
sorter.setRowFilter(RowFilter.regexFilter("(?i)" + searchInput2.getText())); //"(?i)" for case sensitivity
table2.setRowSorter(sorter);
}
public void newUser(){
/*try {
} catch (FileNotFoundException e) {
e.printStackTrace();
}*/
}
public void LogIn(String user, String pass){
}
}
2 ответа
Я думаю, что я не буду единственным парнем, который перестанет пытаться помочь вам, извините за это:P
Ваш код безумен для чтения, и вам явно необходимо улучшить свои навыки Java. Я уверен, что ваша ошибка волшебным образом исчезнет после хорошей очистки кода!
Поэтому, чтобы помочь вам (и извините за это, но не за прямое решение вашей проблемы), я предлагаю вам несколько идей по рефакторингу вашего кода:
Избегайте классов с более чем примерно 10 атрибутами; используйте больше классов для представления ваших данных!
Во-вторых, попробуйте использовать Enums (это очень просто, вы увидите), вместо того, чтобы делать такие вещи:
private static final int COLUMN_FIRST_NAME = 0;
private static final int COLUMN_LAST_NAME = 1;
private static final int COLUMN_PHONE_NUMBER = 2;
private static final int COLUMN_CITY = 3;
И, наконец, я предложу вам сломать JTableSortingPerson на множество маленьких компонентов вместо того, чтобы все основные кирпичи были в одном месте. Это все равно что строить башню прямо из песка, а не из кирпичей, сделанных из этого песка.
Я могу сказать много и много вещей, чтобы улучшить ваш код, но сначала я вас расстрою и сведу с ума от всех технических вещей, которые я вам дам!
Удачи рефакторинг, это ключ, я думаю!