Java 如何正确定位JButtons并调整JTextFields的大小?
我正在尝试创建密码保险库,但每当我尝试运行它时,Java 如何正确定位JButtons并调整JTextFields的大小?,java,passwords,jbutton,jtextfield,passwordvault,Java,Passwords,Jbutton,Jtextfield,Passwordvault,我正在尝试创建密码保险库,但每当我尝试运行它时,JTextFields都非常小,面板在某种程度上被JTable覆盖 我尝试过使用网格袋的尺寸和位置,但没有任何效果 这是给我的IB计算机科学IA的。任何帮助都会很好 JFrame passwordVault; JTable passwordTable; Object[] columnNames = {"Name of Application", "Application Password", "Description"};
JTextField
s都非常小,面板在某种程度上被JTable
覆盖
我尝试过使用网格袋的尺寸和位置,但没有任何效果
这是给我的IB计算机科学IA的。任何帮助都会很好
JFrame passwordVault;
JTable passwordTable;
Object[] columnNames = {"Name of Application", "Application Password", "Description"};
JTextField appName, appPass, appDesc;
JButton add, delete, update;
JLabel nameOfApp, passOfApp, descOfApp;
passwordVault = new JFrame("Password Vault");
passwordTable = new JTable();
JPanel passwordPanel = new JPanel();
DefaultTableModel tableModel = new DefaultTableModel();
tableModel.setColumnIdentifiers(columnNames);
passwordTable.setModel(tableModel);
nameOfApp = new JLabel("App Name: ");
passOfApp = new JLabel("App Password: ");
descOfApp = new JLabel("Description: ");
appName = new JTextField();
appPass = new JTextField();
appDesc = new JTextField();
add = new JButton("Add");
delete = new JButton("Delete");
update = new JButton("Update");
appName.setBounds(400, 220, 100, 25);
appPass.setBounds(400, 250, 100, 25);
appDesc.setBounds(400, 280, 100, 25);
add.setBounds(530, 220, 100, 25);
update.setBounds(530, 250, 100, 25);
delete.setBounds(530, 280, 100, 25);
JScrollPane scrollPane = new JScrollPane(passwordTable);
scrollPane.setBounds(0, 0, 1000, 200);
passwordVault.add(scrollPane);
passwordPanel.add(add);
passwordPanel.add(update);
passwordPanel.add(delete);
passwordPanel.setLayout(new GridBagLayout());
passwordPanel.add(nameOfApp, new GridBagConstraints(0, 0, 1, 1, 0.0, 0.0,
GridBagConstraints.WEST, GridBagConstraints.NONE, new Insets(0, 0, 0, 0), 0, 0));
passwordPanel.add(appName, new GridBagConstraints(1, 0, 1, 1, 0.0, 0.0,
GridBagConstraints.WEST, GridBagConstraints.HORIZONTAL, new Insets(0, 0, 0, 0), 0, 0));
passwordPanel.add(passOfApp, new GridBagConstraints(0, 1, 1, 1, 0.0, 0.0,
GridBagConstraints.WEST, GridBagConstraints.NONE, new Insets(0, 0, 0, 0), 0, 0));
passwordPanel.add(appPass, new GridBagConstraints(1, 1, 1, 1, 0.0, 0.0,
GridBagConstraints.WEST, GridBagConstraints.HORIZONTAL, new Insets(0, 0, 0, 0), 0, 0));
passwordPanel.add(descOfApp, new GridBagConstraints(0, 2, 1, 1, 0.0, 0.0,
GridBagConstraints.WEST, GridBagConstraints.NONE, new Insets(0, 0, 0, 0), 0, 0));
passwordPanel.add(appDesc, new GridBagConstraints(2, 2, 1, 1, 0.0, 0.0,
GridBagConstraints.WEST, GridBagConstraints.HORIZONTAL, new Insets(0, 0, 0, 0), 0, 0));
passwordPanel.add(add, new GridBagConstraints(3, 3, 1, 1, 0.0, 0.0,
GridBagConstraints.WEST, GridBagConstraints.HORIZONTAL, new Insets(0, 0, 0, 0), 0, 0));
passwordPanel.add(update, new GridBagConstraints(4, 3, 1, 1, 0.0, 0.0,
GridBagConstraints.WEST, GridBagConstraints.HORIZONTAL, new Insets(0, 0, 0, 0), 0, 0));
passwordPanel.add(delete, new GridBagConstraints(5, 3, 1, 1, 0.0, 0.0,
GridBagConstraints.WEST, GridBagConstraints.HORIZONTAL, new Insets(0, 0, 0, 0), 0, 0));
passwordVault.add(passwordPanel);
passwordVault.setSize(1000,500);
passwordVault.setLocationRelativeTo(null);
passwordVault.setVisible(true);
以下是您的程序的编辑版本,我认为您正在尝试对布局进行格式化:
JFrame passwordVault;
JTable passwordTable;
Object[] columnNames = {"Name of Application", "Application Password", "Description"};
JTextField appName, appPass, appDesc;
JButton add, delete, update;
JLabel nameOfApp, passOfApp, descOfApp;
passwordVault = new JFrame("Password Vault");
passwordTable = new JTable();
JPanel passwordPanel = new JPanel();
DefaultTableModel tableModel = new DefaultTableModel();
tableModel.setColumnIdentifiers(columnNames);
passwordTable.setModel(tableModel);
nameOfApp = new JLabel("App Name: ");
passOfApp = new JLabel("App Password: ");
descOfApp = new JLabel("Description: ");
appName = new JTextField();
appPass = new JTextField();
appDesc = new JTextField();
add = new JButton("Add");
delete = new JButton("Delete");
update = new JButton("Update");
// Used setPreferredSize and setLocation instead of setBounds
appName.setLocation(new Point(400, 220));
appName.setPreferredSize(new Dimension(100, 25));
appPass.setLocation(new Point(400, 250));
appPass.setPreferredSize(new Dimension(100, 25));
appDesc.setLocation(new Point(400, 280));
appDesc.setPreferredSize(new Dimension(100, 25));
add.setLocation(new Point(530, 220));
add.setPreferredSize(new Dimension(100, 25));
update.setLocation(new Point(530, 250));
update.setPreferredSize(new Dimension(100, 25));
delete.setLocation(new Point(530, 280));
delete.setPreferredSize(new Dimension(100, 25));
JScrollPane scrollPane = new JScrollPane(passwordTable);
scrollPane.setBounds(0, 0, 1000, 200);
// Create a JPanel to contain the scrollPane and passwordPanel
JPanel framePanel = new JPanel();
framePanel.setLayout(new GridLayout(2, 1));
framePanel.add(scrollPane);
passwordPanel.setLayout(new GridBagLayout());
passwordPanel.add(nameOfApp, new GridBagConstraints(0, 0, 1, 1, 0.0, 0.0,
GridBagConstraints.WEST, GridBagConstraints.NONE, new Insets(0, 0, 0, 0), 0, 0));
passwordPanel.add(appName, new GridBagConstraints(1, 0, 1, 1, 0.0, 0.0,
GridBagConstraints.WEST, GridBagConstraints.HORIZONTAL, new Insets(0, 0, 0, 0), 0, 0));
passwordPanel.add(passOfApp, new GridBagConstraints(0, 1, 1, 1, 0.0, 0.0,
GridBagConstraints.WEST, GridBagConstraints.NONE, new Insets(0, 0, 0, 0), 0, 0));
passwordPanel.add(appPass, new GridBagConstraints(1, 1, 1, 1, 0.0, 0.0,
GridBagConstraints.WEST, GridBagConstraints.HORIZONTAL, new Insets(0, 0, 0, 0), 0, 0));
passwordPanel.add(descOfApp, new GridBagConstraints(0, 2, 1, 1, 0.0, 0.0,
GridBagConstraints.WEST, GridBagConstraints.NONE, new Insets(0, 0, 0, 0), 0, 0));
passwordPanel.add(appDesc, new GridBagConstraints(1, 2, 1, 1, 0.0, 0.0,
GridBagConstraints.WEST, GridBagConstraints.HORIZONTAL, new Insets(0, 0, 0, 0), 0, 0));
passwordPanel.add(add, new GridBagConstraints(0, 3, 1, 1, 0.0, 0.0,
GridBagConstraints.WEST, GridBagConstraints.HORIZONTAL, new Insets(0, 0, 0, 0), 0, 0));
passwordPanel.add(update, new GridBagConstraints(1, 3, 1, 1, 0.0, 0.0,
GridBagConstraints.WEST, GridBagConstraints.HORIZONTAL, new Insets(0, 0, 0, 0), 0, 0));
passwordPanel.add(delete, new GridBagConstraints(2, 3, 1, 1, 0.0, 0.0,
GridBagConstraints.WEST, GridBagConstraints.HORIZONTAL, new Insets(0, 0, 0, 0), 0, 0));
framePanel.add(passwordPanel);
// Add the framePanel (which contains the other 2 panels) to the JFrame
passwordVault.add(framePanel);
passwordVault.setSize(1000,500);
passwordVault.setLocationRelativeTo(null);
passwordVault.setVisible(true);
因此,主要的变化是:
使用setPreferredSize
和setLocation
,而不是JTextField
和JButton
的setBounds
创建了一个主JPanel
(称之为framePanel
)以包含滚动窗格
和密码面板
,然后将framePanel
添加到JFrame
它通过创建一个主JPanel
,而不是仅仅向JFrame
本身添加多个JPanel
来帮助组织JFrame
中的不同元素。这样,一个主JPanel
决定了框架的总体布局。不要使用setBounds()。使用setPreferred Size()非常感谢,您知道如何将按钮与其他元素对齐吗?因为现在,按钮在JTextFields和jlabel右边大约有50个像素。老实说,你帮了大忙!非常感谢,代码现在运行得非常好!