如何在已从 JTextField 输入到数组列表中的每个名称旁边添加 JCheckBox?
How do I add JCheckBox next to each name that has been entered into an arraylist from a JTextField?
我正在创建一个如下所示的 ManageUsers GUI:
我希望复选框位于从“添加新用户”部分输入的列表中的名称旁边。我知道其中大部分尚未完成,但这是我到目前为止:
添加用户
public class AddUsers {
private String userName;
public AddUsers(String userName) {
this.userName = userName;
}
public AddUsers() {
userName = "";
}
public void setUserName(String userName) {
this.userName = userName;
}
public String getUserName() {
return userName;
}
public String toString() {
return userName + "\n";
}
}
管理用户GUI
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.util.ArrayList;
import java.awt.TextField;
public class ManageUsersGUI1 extends JPanel {
public static ArrayList<AddUsers> users = new ArrayList<>();
private JLabel addNewUserLabel;
private JTextField addNewUserTextField;
private JLabel deleteUsersLabel;
private JCheckBox jcomp4;
private JCheckBox jcomp5;
private JCheckBox jcomp6;
private JButton addButton;
private JButton deleteButton;
public ManageUsersGUI1() {
//construct components
addNewUserLabel = new JLabel ("Add new User here:");
addNewUserTextField = new JTextField (0);
deleteUsersLabel = new JLabel ("Select which User(s) you would like to delete:");
jcomp4 = new JCheckBox ("newCheckBox");
jcomp5 = new JCheckBox ("newCheckBox");
jcomp6 = new JCheckBox ("newCheckBox");
addButton = new JButton ("Add");
deleteButton = new JButton ("Delete");
//set components properties
addNewUserTextField.setToolTipText ("Enter name and click on Add button.");
addButton.setToolTipText ("Click here to Add new user.");
deleteButton.setToolTipText ("Click here to delete User(s) selected.");
//adjust size and set layout
setPreferredSize (new Dimension (580, 485));
setLayout (null);
//add components
add (addNewUserLabel);
add (addNewUserTextField);
add (deleteUsersLabel);
add (jcomp4);
add (jcomp5);
add (jcomp6);
add (addButton);
add (deleteButton);
//set component bounds (only needed by Absolute Positioning)
addNewUserLabel.setBounds (85, 130, 120, 25);
addNewUserTextField.setBounds (235, 130, 125, 25);
deleteUsersLabel.setBounds (135, 225, 281, 25);
jcomp4.setBounds (225, 270, 140, 25);
jcomp5.setBounds (225, 300, 140, 25);
jcomp6.setBounds (225, 330, 140, 25);
addButton.setBounds (385, 130, 100, 25);
deleteButton.setBounds (230, 410, 100, 25);
addButton.addActionListener(new AddButtonListener());
}
private class AddButtonListener implements ActionListener {
public void actionPerformed(ActionEvent e) {
String text = addNewUserTextField.getText();
users.add(new AddUsers(text));
// Display the charges.
JOptionPane.showMessageDialog(null, text + " has been added.");
}
}
public static void main (String[] args) {
JFrame frame = new JFrame ("AddUsersPanel1");
frame.setTitle("Manage Users");
frame.setDefaultCloseOperation (JFrame.EXIT_ON_CLOSE);
frame.getContentPane().add (new ManageUsersGUI1());
frame.pack();
frame.setVisible (true);
}
}
您可以使用 JPanel
和 BoxLayout
作为布局管理器。
这样,对于在 JTextField
中输入的每个新名称,您可以向 JPanel
添加一个新的 JCheckBox
,它会自动按垂直顺序列出它们。
我已经对你的代码做了一些修改来举例说明,所以你可以根据你的需要进行调整:
public class ManageUsersGUI1 extends JPanel {
public static ArrayList<AddUsers> users = new ArrayList<>();
private JLabel addNewUserLabel;
private JTextField addNewUserTextField;
private JLabel deleteUsersLabel;
private JButton addButton;
private JButton deleteButton;
private JPanel namePanel;
public ManageUsersGUI1() {
//construct components
addNewUserLabel = new JLabel ("Add new User here:");
addNewUserTextField = new JTextField (0);
deleteUsersLabel = new JLabel ("Select which User(s) you would like to delete:");
addButton = new JButton ("Add");
deleteButton = new JButton ("Delete");
namePanel = new JPanel();
namePanel.setLayout(new BoxLayout(namePanel, BoxLayout.Y_AXIS));
//set components properties
addNewUserTextField.setToolTipText ("Enter name and click on Add button.");
addButton.setToolTipText ("Click here to Add new user.");
deleteButton.setToolTipText ("Click here to delete User(s) selected.");
//adjust size and set layout
setPreferredSize (new Dimension (580, 485));
setLayout (null);
//add components
add (addNewUserLabel);
add (addNewUserTextField);
add (deleteUsersLabel);
add (namePanel);
add (addButton);
add (deleteButton);
//set component bounds (only needed by Absolute Positioning)
addNewUserLabel.setBounds (85, 130, 120, 25);
addNewUserTextField.setBounds (235, 130, 125, 25);
deleteUsersLabel.setBounds (135, 225, 281, 25);
addButton.setBounds (385, 130, 100, 25);
namePanel.setBounds(225, 270, 140, 0);
deleteButton.setBounds (230, 335, 100, 25);
addButton.addActionListener(new AddButtonListener());
}
private class AddButtonListener implements ActionListener {
public void actionPerformed(ActionEvent e) {
String text = addNewUserTextField.getText();
users.add(new AddUsers(text));
// Display the charges.
JOptionPane.showMessageDialog(null, text + " has been added.");
JCheckBox nameCheckBox = new JCheckBox();
nameCheckBox.setText(addNewUserTextField.getText());
namePanel.add(nameCheckBox);
namePanel.setBounds(225, 270, 140, namePanel.getHeight() + 25);
deleteButton.setBounds(230, deleteButton.getY() + 25, 100, 25);
JFrame frame = (JFrame) getRootPane().getParent();
frame.setSize(frame.getWidth(), frame.getHeight() + 25);
frame.pack();
}
}
public static void main (String[] args) {
JFrame frame = new JFrame ("AddUsersPanel1");
frame.setTitle("Manage Users");
frame.setDefaultCloseOperation (JFrame.EXIT_ON_CLOSE);
frame.getContentPane().add (new ManageUsersGUI1());
frame.pack();
frame.setVisible (true);
}
}
我正在创建一个如下所示的 ManageUsers GUI:
我希望复选框位于从“添加新用户”部分输入的列表中的名称旁边。我知道其中大部分尚未完成,但这是我到目前为止:
添加用户
public class AddUsers {
private String userName;
public AddUsers(String userName) {
this.userName = userName;
}
public AddUsers() {
userName = "";
}
public void setUserName(String userName) {
this.userName = userName;
}
public String getUserName() {
return userName;
}
public String toString() {
return userName + "\n";
}
}
管理用户GUI
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.util.ArrayList;
import java.awt.TextField;
public class ManageUsersGUI1 extends JPanel {
public static ArrayList<AddUsers> users = new ArrayList<>();
private JLabel addNewUserLabel;
private JTextField addNewUserTextField;
private JLabel deleteUsersLabel;
private JCheckBox jcomp4;
private JCheckBox jcomp5;
private JCheckBox jcomp6;
private JButton addButton;
private JButton deleteButton;
public ManageUsersGUI1() {
//construct components
addNewUserLabel = new JLabel ("Add new User here:");
addNewUserTextField = new JTextField (0);
deleteUsersLabel = new JLabel ("Select which User(s) you would like to delete:");
jcomp4 = new JCheckBox ("newCheckBox");
jcomp5 = new JCheckBox ("newCheckBox");
jcomp6 = new JCheckBox ("newCheckBox");
addButton = new JButton ("Add");
deleteButton = new JButton ("Delete");
//set components properties
addNewUserTextField.setToolTipText ("Enter name and click on Add button.");
addButton.setToolTipText ("Click here to Add new user.");
deleteButton.setToolTipText ("Click here to delete User(s) selected.");
//adjust size and set layout
setPreferredSize (new Dimension (580, 485));
setLayout (null);
//add components
add (addNewUserLabel);
add (addNewUserTextField);
add (deleteUsersLabel);
add (jcomp4);
add (jcomp5);
add (jcomp6);
add (addButton);
add (deleteButton);
//set component bounds (only needed by Absolute Positioning)
addNewUserLabel.setBounds (85, 130, 120, 25);
addNewUserTextField.setBounds (235, 130, 125, 25);
deleteUsersLabel.setBounds (135, 225, 281, 25);
jcomp4.setBounds (225, 270, 140, 25);
jcomp5.setBounds (225, 300, 140, 25);
jcomp6.setBounds (225, 330, 140, 25);
addButton.setBounds (385, 130, 100, 25);
deleteButton.setBounds (230, 410, 100, 25);
addButton.addActionListener(new AddButtonListener());
}
private class AddButtonListener implements ActionListener {
public void actionPerformed(ActionEvent e) {
String text = addNewUserTextField.getText();
users.add(new AddUsers(text));
// Display the charges.
JOptionPane.showMessageDialog(null, text + " has been added.");
}
}
public static void main (String[] args) {
JFrame frame = new JFrame ("AddUsersPanel1");
frame.setTitle("Manage Users");
frame.setDefaultCloseOperation (JFrame.EXIT_ON_CLOSE);
frame.getContentPane().add (new ManageUsersGUI1());
frame.pack();
frame.setVisible (true);
}
}
您可以使用 JPanel
和 BoxLayout
作为布局管理器。
这样,对于在 JTextField
中输入的每个新名称,您可以向 JPanel
添加一个新的 JCheckBox
,它会自动按垂直顺序列出它们。
我已经对你的代码做了一些修改来举例说明,所以你可以根据你的需要进行调整:
public class ManageUsersGUI1 extends JPanel {
public static ArrayList<AddUsers> users = new ArrayList<>();
private JLabel addNewUserLabel;
private JTextField addNewUserTextField;
private JLabel deleteUsersLabel;
private JButton addButton;
private JButton deleteButton;
private JPanel namePanel;
public ManageUsersGUI1() {
//construct components
addNewUserLabel = new JLabel ("Add new User here:");
addNewUserTextField = new JTextField (0);
deleteUsersLabel = new JLabel ("Select which User(s) you would like to delete:");
addButton = new JButton ("Add");
deleteButton = new JButton ("Delete");
namePanel = new JPanel();
namePanel.setLayout(new BoxLayout(namePanel, BoxLayout.Y_AXIS));
//set components properties
addNewUserTextField.setToolTipText ("Enter name and click on Add button.");
addButton.setToolTipText ("Click here to Add new user.");
deleteButton.setToolTipText ("Click here to delete User(s) selected.");
//adjust size and set layout
setPreferredSize (new Dimension (580, 485));
setLayout (null);
//add components
add (addNewUserLabel);
add (addNewUserTextField);
add (deleteUsersLabel);
add (namePanel);
add (addButton);
add (deleteButton);
//set component bounds (only needed by Absolute Positioning)
addNewUserLabel.setBounds (85, 130, 120, 25);
addNewUserTextField.setBounds (235, 130, 125, 25);
deleteUsersLabel.setBounds (135, 225, 281, 25);
addButton.setBounds (385, 130, 100, 25);
namePanel.setBounds(225, 270, 140, 0);
deleteButton.setBounds (230, 335, 100, 25);
addButton.addActionListener(new AddButtonListener());
}
private class AddButtonListener implements ActionListener {
public void actionPerformed(ActionEvent e) {
String text = addNewUserTextField.getText();
users.add(new AddUsers(text));
// Display the charges.
JOptionPane.showMessageDialog(null, text + " has been added.");
JCheckBox nameCheckBox = new JCheckBox();
nameCheckBox.setText(addNewUserTextField.getText());
namePanel.add(nameCheckBox);
namePanel.setBounds(225, 270, 140, namePanel.getHeight() + 25);
deleteButton.setBounds(230, deleteButton.getY() + 25, 100, 25);
JFrame frame = (JFrame) getRootPane().getParent();
frame.setSize(frame.getWidth(), frame.getHeight() + 25);
frame.pack();
}
}
public static void main (String[] args) {
JFrame frame = new JFrame ("AddUsersPanel1");
frame.setTitle("Manage Users");
frame.setDefaultCloseOperation (JFrame.EXIT_ON_CLOSE);
frame.getContentPane().add (new ManageUsersGUI1());
frame.pack();
frame.setVisible (true);
}
}