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私は現在、プロジェクトを担当している初心者のJavaプログラマです。プログラムはことができるようになります。ArrayListsを使用した従業員データの削除
- アドオンは
- はJTextAreaの内のすべてのレコード
- レコードリストから従業員を削除記録するために、従業員に関する情報を入力します。
現在、私の追加機能とリスト機能は機能していますが、削除方法が機能していないようです。
ここでの問題は発生しているように見える：
public class Employee implements ActionListener {
public static String div = "-----------------------------------";
public static ArrayList<Integer> ids, salary;
public static ArrayList<String> firstNames, lastNames, startDates;
public static JTextField idInput, firstInput, lastInput, salaryInput, startInput;
public static JTextArea display;
public static JButton add, remove, list;
public static void main(String[] args) {
// Defining all array lists
ids = new ArrayList();
salary = new ArrayList();
startDates = new ArrayList();
firstNames = new ArrayList();
lastNames = new ArrayList();
// Fonts
Font titleFont = new Font("Courier New", 1, 24);
Font subFont = new Font("Courier New", 1, 16);
// Frame
JFrame frame = new JFrame("Employee Records");
frame.setSize(550, 450);
frame.setLocationRelativeTo(null);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setResizable(false);
// Container
JPanel container = new JPanel();
container.setLayout(null);
frame.setContentPane(container);
// Title
JLabel title = new JLabel("Employee Records");
title.setFont(titleFont);
title.setBounds(160, 10, 250, 24);
// Lablels and text fields
JLabel employeeID = new JLabel("Employee ID#: ");
employeeID.setBounds(5, 50, 190, 16);
employeeID.setFont(subFont);
idInput = new JTextField();
idInput.setBounds(160, 47, 150, 22);
JLabel employeeFirst = new JLabel("First Name: ");
employeeFirst.setBounds(5, 85, 190, 16);
employeeFirst.setFont(subFont);
firstInput = new JTextField();
firstInput.setBounds(160, 82, 150, 22);
JLabel employeeLast = new JLabel("Last Name: ");
employeeLast.setBounds(5, 120, 190, 16);
employeeLast.setFont(subFont);
lastInput = new JTextField();
lastInput.setBounds(160, 117, 150, 22);
JLabel annualSalary = new JLabel("Annual Salary: ");
annualSalary.setBounds(5, 155, 190, 16);
annualSalary.setFont(subFont);
salaryInput = new JTextField();
salaryInput.setBounds(160, 152, 150, 22);
JLabel start = new JLabel("Start Date: ");
start.setBounds(5, 190, 190, 14);
start.setFont(subFont);
startInput = new JTextField();
startInput.setBounds(160, 187, 150, 22);
// Buttons
add = new JButton("Add (REQUIRES ALL FIELDS)");
add.setBounds(330, 47, 200, 20);
add.addActionListener(new Employee());
remove = new JButton("Remove (by ID#)");
remove.setBounds(330, 72, 200, 20);
remove.addActionListener(new Employee());
list = new JButton("List");
list.setBounds(330, 97, 200, 20);
list.addActionListener(new Employee());
// Text area
display = new JTextArea();
display.setEditable(false);
JScrollPane scrollPane = new JScrollPane(display);
scrollPane.setBounds(5, 217, 535, 200);
// Adding everything
container.add(title);
container.add(scrollPane);
container.add(employeeID);
container.add(idInput);
container.add(employeeFirst);
container.add(firstInput);
container.add(employeeLast);
container.add(lastInput);
container.add(annualSalary);
container.add(salaryInput);
container.add(start);
container.add(startInput);
container.add(add);
container.add(remove);
container.add(list);
// Extras
frame.toFront();
frame.setVisible(true);
}
public void actionPerformed(ActionEvent event) {
if (event.getSource().equals(add)) {
if (idInput.getText().equals("") || firstInput.getText().equals("") || lastInput.getText().equals("")
|| salaryInput.getText().equals("") || startInput.getText().equals("")) {
display.setText("Error, please fill every field.");
} else {
ids.add(Integer.parseInt(idInput.getText()));
firstNames.add(firstInput.getText());
lastNames.add(lastInput.getText());
salary.add(Integer.parseInt(salaryInput.getText()));
startDates.add(startInput.getText());
display.setText("Employee added to record(s).");
}
} else if (event.getSource().equals(remove)) {
for (int i = 0; i < ids.size(); i++) {
if (Integer.parseInt(idInput.getText()) == ids.get(i)) {
ids.remove(i);
firstNames.remove(i);
lastNames.remove(i);
salary.remove(i);
startDates.remove(i);
display.setText("Employee #" + ids.get(i) + " has been removed from the records.");
} else {
display.setText("Error: employee ID# does not exist, try again.");
}
}
} else {
display.setText(null);
for (int i = 0; i < ids.size(); i++) {
display.append(div + "\nEmployee ID#: " + ids.get(i) + "\nFirst Name: " + firstNames.get(i)
+ "\nLast Name: " + lastNames.get(i) + "\nAnnual Salary ($): " + salary.get(i)
+ "\nStart Date: " + startDates.get(i) + "\n");
}
}
}