JDialog 和主JFrame之间

最新推荐文章于 2023-12-21 01:45:21 发布

原创最新推荐文章于 2023-12-21 01:45:21 发布 · 929 阅读

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#string #null #input #login #c #class

本文详细介绍了注册窗口的设计与实现过程，包括用户界面组件的布局、事件监听与数据交互，展示了如何通过Java实现一个简单的注册功能。

package Client; import java.awt.BorderLayout; import java.awt.Container; import java.awt.GridBagConstraints; import java.awt.GridBagLayout; import java.awt.TextField; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.io.BufferedReader; import java.io.BufferedWriter; import java.io.File; import java.io.FileNotFoundException; import java.io.FileReader; import java.io.FileWriter; import java.io.IOException; import java.io.InputStreamReader; import java.io.PrintWriter; import java.net.Socket; import java.util.HashMap; import javax.swing.BorderFactory; import javax.swing.JButton; import javax.swing.JDialog; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JOptionPane; import javax.swing.JPanel; import javax.swing.JPasswordField; import javax.swing.JTextField; public class RegistWindow extends JDialog implements ActionListener { protected JTextField idField; protected JPasswordField passwdField,confirm; protected JButton okBnt, exitBnt; protected JLabel idLabel, passwdLabel,confirmLabel; Socket socket; PZClient pc; public RegistWindow(PZClient pc) { super(pc); //继承pc this.pc = pc; //全局变量中输入局部变量以便下面使用。 idField = new JTextField(5); idField.setActionCommand("ID"); idLabel = new JLabel("ID : "); idLabel.setLabelFor(idField); passwdField = new JPasswordField(5); passwdField.addActionListener(this); confirm = new JPasswordField(5); confirm.addActionListener(this); passwdLabel = new JLabel("PassWD : "); passwdLabel.setLabelFor(idField); confirmLabel = new JLabel("Confirm PW : "); confirmLabel.setLabelFor(idField); JPanel textControlsPane = new JPanel(); GridBagLayout gridbag = new GridBagLayout(); GridBagConstraints c = new GridBagConstraints(); textControlsPane.setLayout(gridbag); JLabel[] labels = { idLabel, passwdLabel, confirmLabel }; JTextField[] textFields = { idField, passwdField, confirm }; addLabelTextRows(labels, textFields, gridbag, textControlsPane); c.gridwidth = GridBagConstraints.REMAINDER; // last c.anchor = GridBagConstraints.WEST; c.weightx = 1.0; textControlsPane.setBorder(BorderFactory.createCompoundBorder(BorderFactory .createTitledBorder("Login As"), BorderFactory.createEmptyBorder(5, 5, 5, 5))); JPanel bntPane = new JPanel(new BorderLayout()); GridBagLayout bntGrid = new GridBagLayout(); GridBagConstraints bnt_c = new GridBagConstraints(); bntPane.setLayout(bntGrid); okBnt = new JButton("OK"); okBnt.setActionCommand("ok"); okBnt.addActionListener(this); exitBnt = new JButton("exit"); exitBnt.setActionCommand("exit"); exitBnt.addActionListener(this); JButton[] nBnt = { okBnt, exitBnt }; addLabelBntColums(nBnt, bntGrid, bntPane); bnt_c.gridwidth = GridBagConstraints.REMAINDER; bnt_c.anchor = GridBagConstraints.WEST; bnt_c.weightx = 1.0; bntPane.setBorder(BorderFactory.createCompoundBorder(BorderFactory .createTitledBorder("^---^"), BorderFactory.createEmptyBorder(5, 5, 5, 5))); loginFrame = new JFrame(); //RegistWindow registFrame = new RegistWindow(); loginFrame.setLayout(new BorderLayout()); loginFrame.setLocation(500, 250); loginFrame.getContentPane().add(textControlsPane, BorderLayout.CENTER); loginFrame.getContentPane().add(bntPane, BorderLayout.SOUTH); loginFrame.setVisible(true); loginFrame.setSize(250, 300); } private void addLabelBntColums(JButton[] nBnt, GridBagLayout gridbag, Container container) { GridBagConstraints c = new GridBagConstraints(); c.anchor = GridBagConstraints.EAST; int numLabels = nBnt.length; for (int i = 0; i < numLabels; i++) { c.gridwidth = GridBagConstraints.RELATIVE; c.fill = GridBagConstraints.NONE; c.weightx = 0.0; container.add(nBnt[i], c); } } private void addLabelTextRows(JLabel[] labels, JTextField[] textFields, GridBagLayout gridbag, Container container) { GridBagConstraints c = new GridBagConstraints(); c.anchor = GridBagConstraints.EAST; int numLabels = labels.length; for (int i = 0; i < numLabels; i++) { c.gridwidth = GridBagConstraints.RELATIVE; // next-to-last c.fill = GridBagConstraints.NONE; // reset to default c.weightx = 0.0; // reset to default container.add(labels[i], c); c.gridwidth = GridBagConstraints.REMAINDER; // end row c.fill = GridBagConstraints.HORIZONTAL; c.weightx = 1.0; container.add(textFields[i], c); } } @Override public void actionPerformed(ActionEvent ac) { String admin = idField.getText(); String passWord = passwdField.getText(); String confirmpw = confirm.getText(); if ("ok".equalsIgnoreCase(ac.getActionCommand())) { if((admin != null && !admin.equals("")) && (passWord != null && !passWord.equals("")) && (confirmpw != null && !confirmpw.equals(""))) { String regist = null; regist = "[REGIST]" + admin+" "+passWord; //System.out.println(regist); pc.send(regist); } else{ System.out.println("INPUT THE MESSAGE!"); //JOptionPane.showMessageDialog(null, "INPUT THE MESSAGE!"); } } else if("exit".equalsIgnoreCase(ac.getActionCommand())){ quit(); } } protected void quit() { System.exit(0); } public String getregist() { return isregist; } }

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