Java实现简易界面通讯录（java实现一个简易的通讯录）

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

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.。

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。

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 {

privatehttp:// 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

@Override

public 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 ActionListhttp://ener {

@Override

public 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() {

@Override

public 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() {

@Override

public 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() {

@Override

public 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() {

@Override

public 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() {

@Override

public 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);

}

}

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