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java增删图形化源代码 java增删改差
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用java在图形用户界面下的txt文件下对文件进行增删改查
就写个新增的吧。其java增删图形化源代码他你照着写。
package com.zz.jfram;
import java.awt.BorderLayout;
import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.File;
import java.io.IOException;
import javax.swing.JButton;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTextArea;
import javax.swing.JTextField;
public class TxtManage extends JFrame {
private static final long serialVersionUID = 1L;
public TxtManage() {
final JFrame jFrame = new JFrame();
JButton jButton = new JButton("新增");
JPanel jPanel = new JPanel();
final JTextField jTextField = new JTextField(30);
final JLabel jLabel = new JLabel("请输入新增文件的名字:");
jPanel.add(jLabel, FlowLayout.LEFT);
jPanel.add(jTextField, FlowLayout.CENTER);
jPanel.add(jButton, FlowLayout.RIGHT);
jFrame.add(jPanel, BorderLayout.NORTH);
// 设置窗体属性
jFrame.setBounds(500, 50, 600, 400);
final JTextArea jTextArea = new JTextArea(50, 50);
// 新增按钮点击事件
jButton.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
JFileChooser jfc = new JFileChooser();
jfc.setDialogTitle("选择路径");
jfc.setFileSelectionMode(JFileChooser.DIRECTORIES_ONLY);// 只能选择目录
if (jfc.showOpenDialog(jFrame) == JFileChooser.APPROVE_OPTION) {
// 选中目录的绝对路径
String path = jfc.getSelectedFile().getAbsolutePath();
// 在当前目录新增一个文件
File file = new File(path+"\\"+jTextField.getText()+".txt");
if (!file.exists()) {
try {
file.createNewFile();
jTextArea.setText("文件新增成功java增删图形化源代码！");
} catch (IOException e1) {
e1.printStackTrace();
}
}else{
try {
throw new Exception("文件已存在!");
} catch (Exception e1) {
e1.printStackTrace();
}
}
}
}
});
jFrame.add(jTextArea, BorderLayout.CENTER);
jFrame.setVisible(true);
// 关闭处理动作
jFrame.setDefaultCloseOperation(EXIT_ON_CLOSE);
}
public static void main(String[] args) {
new TxtManage();
}
}
相关问答
Q1: 求一个，java图形化界面的源码
自己写的石头剪子布代码，有图形界面，可以把自己选中的图片命名为.jpg放到工程目录下做背景图片。//////////////////////////// package HomeWork;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.io.*;
import java.util.*;
public class StoneShearsSack { /**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
new StoneWindow("Sample Game");
}
}
final class StoneWindow extends JFrame implements ActionListener,ItemListener{
JLabel win,draw,lose,score,count;
JTextArea text;
JComboBox list;
JButton fight,clear;
int swin,sdraw,slose,sscore;
JPanel panel1 = new JPanel();
JPanel panel2 = new JPanel();
String str1,str2,str3;
Random rdm = new Random();
int flag,random ,flag1, count1;
//final ImageIcon con = new ImageIcon("a.jpg") ;
public StoneWindow(String s){
setTitle("Sample Game");
fight = new JButton("出招");
clear = new JButton("清除分数");
//final ImageIcon con = new ImageIcon("b.jpg") ;
text = new JTextArea(){
final ImageIcon con = new ImageIcon("a.jpg");
Image mg = con.getImage();
{setOpaque(false);}
public void paintComponent(Graphics g){
g.drawImage(mg, 0, 0, this);
super.paintComponent(g);
}
};
text.setForeground(Color.black);
Font f = new Font("华文行楷",Font.BOLD,50);
text.setFont(f);
list = new JComboBox();
list.addItem("石头");
list.addItem("剪子");
list.addItem("布");
panel2.setBackground(Color.blue);
panel2.add(list);
panel2.add(fight);
panel2.add(clear);
panel2.setPreferredSize(new Dimension(900,50));
list.addItemListener(this);
fight.addActionListener(this);
clear.addActionListener(this);
win = new JLabel("赢：" + swin);
draw = new JLabel(" 和：" + sdraw);
lose = new JLabel(" 输：" + slose);
score = new JLabel(" 得分：" + sscore);
count = new JLabel(" 总局：" + count1);
Font f1 = new Font("宋体",1,30);
win.setFont(f1);
draw.setFont(f1);
lose.setFont(f1);
score.setFont(f1);
count.setFont(f1);
win.setForeground(Color.cyan);
draw.setForeground(Color.green);
lose.setForeground(Color.blue);
score.setForeground(Color.black);
count.setForeground(Color.pink);
panel1.setBackground(Color.red);
panel1.add(win);
panel1.add(draw);
panel1.add(lose);
panel1.add(score);
panel1.add(count);
panel1.setPreferredSize(new Dimension(900,50));
add(panel1,BorderLayout.NORTH);
add(text,BorderLayout.CENTER);
add(panel2,BorderLayout.SOUTH);
setBounds(100,100,900,450);
validate();
setVisible(true);
setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
}
public void actionPerformed(ActionEvent e){
if(e.getSource() == fight){
if(list.getSelectedItem() == "石头"){
flag = 0;
}
else if(list.getSelectedItem() == "剪子"){
flag = 1;
}
else if(list.getSelectedItem() == "布"){
flag = 2;
}
str1 = (String)list.getSelectedItem();
text.setText("");
text.append("\n");
text.append(" 你 出: " + str1 + "\n");
text.append(" 电脑出: " + this.random() + "\n");
text.append(" 结 果: " + this.result() + "\n");
this.finalresult();
}
if(e.getSource() == clear){
swin = 0;
sdraw = 0;
slose = 0;
sscore = 0;
count1 = 0;
text.setText("");
win.setText(" 赢：" + swin);
draw.setText(" 和：" + sdraw);
lose.setText(" 输：" + slose);
score.setText(" 得分：" + sscore);
count.setText(" 总局：" + count1);
}
}
public String random(){
random = rdm.nextInt(3);
if(random == 0)
str2 = "石头";
else if(random == 1)
str2 = "剪子";
else if(random == 2)
str2 = "布";
return str2;
}
public String result(){
if(random == flag){
str3 ="打平";
flag1 = 0;
}
else if(random flag flag == 1){
str3 = "你输了";
flag1 = 1;
}
else if(random flag random ==1){
str3 = "你输了";
flag1 = 1;
}
else if(random ==2 flag == 0){
str3 = "你输了";
flag1 = 1;
}
else{
str3 = "你赢了";
flag1 = 2;
}
return str3;
}
public void finalresult(){
if(flag1 == 0){
sdraw ++;
draw.setText(" 平：" + sdraw);
score.setText(" 得分：" + sscore);
}
if(flag1 == 1){
slose ++;
sscore = sscore - 10;
lose.setText(" 输：" + slose);
score.setText(" 得分：" + sscore);
}
if(flag1 == 2) {
swin ++;
sscore = sscore + 10;
win.setText(" 赢：" + swin);
score.setText(" 得分：" + sscore);
}
count1 = swin + slose + sdraw;
count.setText(" 总局：" + count1);
}
public void itemStateChanged(ItemEvent e){
}
}
Q2: 用JAVA图形界面做一个学生管理系统，要有增删改查功能，不要连接数据库的那种，急用~~
你试一下这个。
应该都达到你说java增删图形化源代码的java增删图形化源代码了。
-------------------------------------------------------------------------------------------------------------------
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.Serializable;
import java.util.ArrayList;
import java.util.List;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.JTextField;
import javax.swing.table.DefaultTableModel;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
public class AppStudent extends JFrame {
private JTextField nameField;
private JTextField sexField;
private JTextField ageField;
private JTextField stunoField;
private JTextField clazzField;
private JTextField facultyField;
private JTable table;
private DefaultTableModel model;
private String[] columns = { "姓名", "性别", "年龄", "学号", "班级", "系别" };
private List data;
private Student tmp;
// 姓名java增删图形化源代码，性别，年龄，学号，班级，系别
public AppStudent() {
data = new ArrayList();
getContentPane().setLayout(null);
JLabel lblName = new JLabel("姓名");
lblName.setBounds(12, 10, 50, 13);
getContentPane().add(lblName);
nameField = new JTextField();
nameField.setBounds(74, 7, 96, 19);
getContentPane().add(nameField);
nameField.setColumns(10);
JLabel lblSex = new JLabel("性别");
lblSex.setBounds(182, 10, 50, 13);
getContentPane().add(lblSex);
sexField = new JTextField();
sexField.setBounds(244, 7, 96, 19);
getContentPane().add(sexField);
sexField.setColumns(10);
JLabel lblAge = new JLabel("年龄");
lblAge.setBounds(352, 10, 50, 13);
getContentPane().add(lblAge);
ageField = new JTextField();
ageField.setBounds(414, 7, 96, 19);
getContentPane().add(ageField);
ageField.setColumns(10);
JLabel lblStuno = new JLabel("学号");
lblStuno.setBounds(12, 36, 50, 13);
getContentPane().add(lblStuno);
stunoField = new JTextField();
stunoField.setColumns(10);
stunoField.setBounds(74, 33, 96, 19);
getContentPane().add(stunoField);
JLabel lblClass = new JLabel("班级");
lblClass.setBounds(182, 36, 50, 13);
getContentPane().add(lblClass);
clazzField = new JTextField();
clazzField.setColumns(10);
clazzField.setBounds(244, 33, 96, 19);
getContentPane().add(clazzField);
JLabel lblFaculty = new JLabel("系别");
lblFaculty.setBounds(352, 36, 50, 13);
getContentPane().add(lblFaculty);
facultyField = new JTextField();
facultyField.setColumns(10);
facultyField.setBounds(414, 33, 96, 19);
getContentPane().add(facultyField);
JButton btnAdd = new JButton("add");
btnAdd.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
add();
}
});
btnAdd.setBounds(192, 59, 67, 21);
getContentPane().add(btnAdd);
JButton btnDel = new JButton("del");
btnDel.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
del();
}
});
btnDel.setBounds(271, 59, 58, 21);
getContentPane().add(btnDel);
JButton btnUpdate = new JButton("update");
btnUpdate.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
update();
}
});
btnUpdate.setBounds(352, 59, 77, 21);
getContentPane().add(btnUpdate);
JButton btnFind = new JButton("find");
btnFind.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
find();
}
});
btnFind.setBounds(441, 59, 69, 21);
getContentPane().add(btnFind);
model = new DefaultTableModel(columns, 0);
table = new JTable(model);
table.addMouseListener(new MouseAdapter() {
public void mouseClicked(MouseEvent e) {
int row = table.getSelectedRow();
nameField.setText((String) table.getValueAt(row, 0));
sexField.setText((String) table.getValueAt(row, 1));
ageField.setText((String) table.getValueAt(row, 2));
stunoField.setText((String) table.getValueAt(row, 3));
clazzField.setText((String) table.getValueAt(row, 4));
facultyField.setText((String) table.getValueAt(row, 5));
tmp = getInput();
}
});
JScrollPane scrollPane = new JScrollPane(table);
scrollPane.setBounds(12, 90, 571, 248);
getContentPane().add(scrollPane);
setDefaultCloseOperation(EXIT_ON_CLOSE);
setLocationRelativeTo(null);
setSize(601, 380);
setResizable(false);
setVisible(true);
}
private Student getInput() {
Student stu = new Student();
stu.name = nameField.getText();
stu.sex = sexField.getText();
stu.age = ageField.getText();
stu.stuno = stunoField.getText();
stu.clazz = clazzField.getText();
stu.faculty = facultyField.getText();
return stu;
}
private void add() {
data.add(getInput());
showTable();
}
private void del() {
for (int i = 0; i data.size(); i++) {
if (tmp.equals(data.get(i))) {
data.remove(i);
break;
}
}
showTable();
}
private void update() {
Student stu = getInput();
for (int i = 0; i data.size(); i++) {
if (tmp.equals(data.get(i))) {
data.remove(i);
data.add(i, stu);
break;
}
}
showTable();
}
private void find() {
removeRows();
Student stu = getInput();
for (int i = 0; i data.size(); i++) {
Student tmp = (Student) data.get(i);
if (tmp.equals(stu)) {
model.addRow(tmp.toArray());
break;
}
}
}
private void showTable() {
removeRows();
for (int i = 0; i data.size(); i++) {
Student stu = (Student) data.get(i);
model.addRow(stu.toArray());
}
}
private void removeRows() {
while (model.getRowCount() 0) {
model.removeRow(0);
}
}
public static void main(String[] args) {
new AppStudent();
}
}
class Student implements Serializable {
public String name;
public String sex;
public String age;
public String stuno;
public String clazz;
public String faculty;
public boolean equals(Object obj) {
return equals((Student) obj);
}
public boolean equals(Student obj) {
boolean isName = true;
if (obj.name != null !"".equals(obj.name)) {
isName = name.equals(obj.name);
}
boolean isSex = true;
if (obj.sex != null !"".equals(obj.sex)) {
isSex = sex.equals(obj.sex);
}
boolean isAge = true;
if (obj.age != null !"".equals(obj.age)) {
isAge = age.equals(obj.age);
}
boolean isStuno = true;
if (obj.stuno != null !"".equals(obj.stuno)) {
isStuno = stuno.equals(obj.stuno);
}
boolean isClazz = true;
if (obj.clazz != null !"".equals(obj.clazz)) {
isClazz = clazz.equals(obj.clazz);
}
boolean isfaculty = true;
if (obj.faculty != null !"".equals(obj.faculty)) {
isfaculty = faculty.equals(obj.faculty);
}
return isName isSex isAge isStuno isClazz isfaculty;
}
public String[] toArray() {
return new String[] { name, sex, age, stuno, clazz, faculty };
}
}
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