Java实现简易界面通讯录 Java实现简易界面通讯录

前言这个也是Java实验课程的一个作业，和Java实现简单的图形界面计算器一起做的，因为以前没有做过GUI编程，所以做的非常简陋，还有很多BUG，但是感觉当个作业也够了。
程序功能和截图

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这里的添加是直接添加到文件中，为什么不用数据库呢？因为我们老师根本就没教，所以也不能用.。

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通过输入的名字在文件中查找是否有该用户，如果用，就显示到界面上。

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大致的功能就是上面两个。
代码一、文件读写工具

package Contacts; import java.io.*; /** * Created by Yifan Jia on 2018/6/10. */public class FileRW {private static FileWriter fileWriter; private static FileReader fileReader; private static BufferedReader bf; private static BufferedWriter bw; private static File file = new File("D:\\dest.txt"); public static void fileWrite(String s) {try {fileWriter = new FileWriter(file, true); bw = new BufferedWriter(fileWriter); bw.write(s); } catch (IOException e) {e.printStackTrace(); } finally {try {bw.close(); fileWriter.close(); } catch (IOException e) {e.printStackTrace(); }}}public static String fileRead(String dest) {try {fileReader = new FileReader(file); bf = new BufferedReader(fileReader); String ss; while((ss = bf.readLine()) != null) {String[] temp = ss.split(","); if(temp[0].equals(dest)) {return ss; }}} catch (FileNotFoundException e) {e.printStackTrace(); } catch (IOException e) {e.printStackTrace(); } finally {try {bf.close(); fileReader.close(); } catch (IOException e) {e.printStackTrace(); }}return null; }}

二、界面程序

package Contacts; import javax.swing.*; import java.awt.*; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.event.WindowAdapter; import java.awt.event.WindowEvent; //定义自已的MyPanel，用于实现画图class MyPanelone extends JPanel {private String ss; private int x; private int y; private int size; public MyPanelone(String ss, int x, int y, int size) {this.ss = ss; this.x = x; this.y = y; this.size = size; }//覆盖JPanel的paint方法@Overridepublic void paint(Graphics g) {super.paint(g); g.setColor(Color.BLACK); g.setFont(new Font("宋体", Font.BOLD, size)); g.drawString(ss, x, y); }}public class MyContacts extends JFrame{private MyPanelone myPaneone; private JPanel[] jPanels = new JPanel[7]; private JButton[] jButtons = new JButton[4]; private JTextField[] jTextFields = new JTextField[6]; private JLabel[] jLabels = new JLabel[6]; private String[] texts = new String[6]; private class MyActionListener implements ActionListener {@Overridepublic void actionPerformed(ActionEvent e) {boolean flag = true; StringBuilder s = new StringBuilder(); String actionCommand = e.getActionCommand(); if(actionCommand == "添加") {for (int i = 0; i < 6; i++) {texts[i] = new String(); texts[i] = jTextFields[i].getText(); //System.out.println(texts[i]); if(texts[i].equals("") || texts[i] == null) {flag = false; break; }if(i == 0) {s.append(texts[i]); }else {s.append(",").append(texts[i]); }}if(flag) {s.append("\n"); //将文本域中的内容写成一个字符串String ss = s.toString(); //将字符串写入文件FileRW.fileWrite(ss); for(int i=0; i<6; i++) {jTextFields[i].setText(""); }//System.out.println(ss); JFrame jFrame = new JFrame(); jFrame.setBounds(500, 300, 300, 300); MyPanelone myPanelone = new MyPanelone("添加成功", 100, 100, 20); jFrame.add(myPanelone); jFrame.addWindowListener(new WindowAdapter() {@Overridepublic void windowClosing(WindowEvent e) {e.getWindow().dispose(); }}); jFrame.setVisible(true); }else {JFrame jFrame = new JFrame(); jFrame.setBounds(500, 300, 300, 300); MyPanelone myPanelone = new MyPanelone("请把所有内容都填写完整", 60, 100, 15); jFrame.add(myPanelone); jFrame.addWindowListener(new WindowAdapter() {@Overridepublic void windowClosing(WindowEvent e) {e.getWindow().dispose(); }}); jFrame.setVisible(true); }}else if(actionCommand == "清空") {for(int i=0; i<6; i++) {jTextFields[i].setText(""); }}else if(actionCommand == "退出") {System.exit(0); }else if(actionCommand == "查找") {JFrame frame = new JFrame("输入"); JPanel jPanel = new JPanel(); JPanel jPanel1 = new JPanel(); JLabel jLabel = new JLabel("输入查找人的名字"); JButton jButton = new JButton("确定"); JTextField jTextField = new JTextField(30); jPanel.add(jLabel); jPanel.add(jTextField); jButton.addActionListener(new ActionListener() {@Overridepublic void actionPerformed(ActionEvent e) {String actionCommand1 = e.getActionCommand(); String dest = jTextField.getText(); String findresult = FileRW.fileRead(dest); if(findresult == null) {for(int i=0; i<6; i++) {jTextFields[i].setText(""); }JFrame jFrame = new JFrame(); jFrame.setBounds(500, 300, 300, 300); MyPanelone myPanelone = new MyPanelone("未找到该用户", 100, 100, 20); jFrame.add(myPanelone); jFrame.addWindowListener(new WindowAdapter() {@Overridepublic void windowClosing(WindowEvent e) {e.getWindow().dispose(); }}); jFrame.setVisible(true); frame.dispose(); }else {String[] tempdest = findresult.split(","); for(int i=0; i<6; i++) {jTextFields[i].setText(tempdest[i]); }frame.dispose(); }}}); jPanel1.add(jButton); frame.add(jPanel, BorderLayout.CENTER); frame.add(jPanel1, BorderLayout.SOUTH); frame.setBounds(500, 300, 400, 300); frame.addWindowListener(new WindowAdapter() {@Overridepublic void windowClosing(WindowEvent e) {e.getWindow().dispose(); }}); frame.setVisible(true); }}}MyContacts() {myPaneone = new MyPanelone("communication", 250, 60, 60); //myPaneone.setSize(1000, 150); this.add(myPaneone); for(int i=0; i<7; i++) {jPanels[i] = new JPanel(); }jLabels[0] = new JLabel("姓名"); jLabels[1] = new JLabel("邮政编码"); jLabels[2] = new JLabel("通信地址"); jLabels[3] = new JLabel("电话"); jLabels[4] = new JLabel("手机"); jLabels[5] = new JLabel("电子邮件"); jButtons[0] = new JButton("添加"); jButtons[1] = new JButton("查找"); jButtons[2] = new JButton("清空"); jButtons[3] = new JButton("退出"); for(int i=0; i<6; i++) {jTextFields[i] = new JTextField(50); }//设置布局管理this.setLayout(new GridLayout(8, 1)); //加入各个组件for(int i=0; i<6; i++) {jPanels[i].add(jLabels[i]); jPanels[i].add(jTextFields[i]); this.add(jPanels[i]); }for(int i=0; i<4; i++) {jButtons[i].addActionListener(new MyActionListener()); jPanels[6].add(jButtons[i]); }this.add(jPanels[6]); }public static void main(String[] args) {JFrame f = new MyContacts(); f.setTitle(f.getClass().getSimpleName()); f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); f.setBounds(400, 200, 1000, 600); f.setVisible(true); }}

【Java实现简易界面通讯录】以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持脚本之家。