> * *JAVA大作业 | 学生成绩管理系统（含有用户界面）***
————- ps ：多个包写在一起———–
package test;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.util.ArrayList;
class person{
public String name;
public String age;
}
class Student extends person{
public String no;
public String score1,score2,score3,score4;
public Student(String no, String name, String age,String score1,String score2,String score3,String score4) {
this.no = no;
this.name = name;
this.age = age;
this.score1 = score1;
this.score2 = score2;
this.score3 = score3;
this.score4 = score4;
}
public String getNo() {
return this.no;
}
public void setNo(String no) {
this.no = no;
}
public String getName() {
return this.name;
}
public void setName(String name) {
this.name = name;
}
public String getAge() {
return this.age;
}
public void setAge(String age) {
this.age = age;
}
public String getscore1() {
return this.score1;
}
public void setscore1(String score1) {
this.score1 = score1;
}
public String getscore2() {
return this.score2;
}
public void setscore2(String score2) {
this.score2 = score2;
}
public String getscore3() {
return this.score3;
}
public void setscore3(String score3) {
this.score3 = score3;
}
public String getscore4() {
return this.score4;
}
public void setscore4(String score4) {
this.score4 = score4;
}
}
class Class{
ArrayList<Student> stuList;
public Class(){
this.stuList=new ArrayList<>();
}
public void addStudent(Student stu){
this.stuList.add(stu);
}
public void deleteStudent(Student s){
this.stuList.remove(s);
}
}
class menu extends JFrame{
public menu()
{
this.setBounds(300, 150, 500, 450);
this.setTitle("大连海事大学 -- --学生信息管理系统");
this.setLayout(null);
JLabel labTipw = new JLabel("欢迎进入 大连海事大学 学生信息管理系统");
labTipw.setBounds(50, 2, 250, 45);
JLabel labTipws = new JLabel("（*新用户初始密码为 身份证后六位数字）");
labTipws.setBounds(50, 15, 250, 45);
JLabel labyonghu = new JLabel("用户名:");
labyonghu.setBounds(50, 60, 100, 50);
JTextField txtyonghu = new JTextField("请输入登录用户名：",30);
txtyonghu.setBounds(130, 76, 180, 30);
JLabel labmima = new JLabel("密码：");
labmima.setBounds(50, 100, 50, 50);
JTextField txtmima = new JTextField("请输入登录6位密码：",30);
txtmima.setBounds(130, 117, 180, 30);
JButton btndianji = new JButton("点击登录");
btndianji.setBounds(130, 165, 180, 30);
btndianji.setForeground(Color.BLUE);
this.add(labTipw);
this.add(labTipws);
this.add(labyonghu);
this.add(txtyonghu);
this.add(labmima);
this.add(txtmima);
this.add(btndianji);
btndianji.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
new StudentFrame();}
} );
setVisible(true);
}
}
public class StudentFrame extends JFrame {
Class c = new Class();
JLabel labNo;
JLabel labName;
JLabel labAge;
JLabel labscore1;
JLabel labscore2;
JLabel labscore3;
JLabel labscore4;
JLabel labTip;
JLabel labavr;
JTextField txtNo;
JTextField txtName;
JTextField txtAge;
JTextField txtscore1;
JTextField txtscore2;
JTextField txtscore3;
JTextField txtscore4;
JTextField txtavr;
JButton btnAdd;
JButton btnRemove;
JButton btnModify;
JButton btnClear;
JButton btnFirst;
JButton btnPrev;
JButton btnNext;
JButton btnLast;
JButton btnCheck;
JOptionPane dialog;
public StudentFrame() {
this.setBounds(300, 100, 650, 530);
this.setTitle("大连海事大学 -- --学生信息管理系统");
this.setLayout(null);
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
studentin();
addStu();
firstStudent();
lastStudent();
previous();
next();
remove();
check();
modify();
clear();
this.setVisible(true);
}
public void studentin() {
labTip = new JLabel("登陆成功 ！您已经进入管理系统（仅输入学号便可查找学生信息）.");
labTip.setBounds(50, 2, 550, 45);
labNo = new JLabel("学生学号:");
labNo.setBounds(50, 20, 100, 50);
txtNo = new JTextField("请输入6位学号：",30);
txtNo.setBounds(130, 35, 180, 30);
labName = new JLabel("学生姓名:");
labName.setBounds(50, 60, 100, 50);
txtName = new JTextField("请输入学生姓名：",30);
txtName.setBounds(130, 76, 180, 30);
labAge = new JLabel("班级：");
labAge.setBounds(50, 100, 50, 50);
txtAge = new JTextField("请输入学生所在班级：",30);
txtAge.setBounds(130, 117, 180, 30);
labscore1 = new JLabel("JAVA 成绩:");
labscore1.setBounds(50, 140, 100, 50);
txtscore1 = new JTextField("请输入学生成绩：",30);
txtscore1.setBounds(130, 158, 180, 30);
labscore2 = new JLabel("C语言成绩:");
labscore2.setBounds(50, 189, 100, 50);
txtscore2 = new JTextField("请输入学生成绩：",30);
txtscore2.setBounds(130, 199, 180, 30);
labscore3 = new JLabel("Python成绩:");
labscore3.setBounds(50, 230, 100, 50);
txtscore3 = new JTextField("请输入学生成绩：",30);
txtscore3.setBounds(130, 240, 180, 30);
labscore4 = new JLabel("C++ 成绩:");
labscore4.setBounds(50, 290, 100, 50);
txtscore4 = new JTextField("请输入学生成绩：",30);
txtscore4.setBounds(130, 301, 180, 30);
labavr = new JLabel("操作说明 ** |<< : 第一个学生信息 <:上一位学生信息 >：下一个学生信息 >>|：最后一个学生信息");
labavr.setBounds(50, 330, 580, 50);
btnAdd = new JButton("添加");
btnAdd.setBounds(50, 385, 80, 20);
btnAdd.setForeground(Color.BLACK);
btnModify = new JButton("修改");
btnModify.setBounds(150, 385, 80, 20);
btnModify.setForeground(Color.BLUE);
btnRemove = new JButton("删除");
btnRemove.setBounds(250, 385, 80, 20);
btnRemove.setForeground(Color.RED);
btnClear = new JButton("清空");
btnClear.setBounds(350, 385, 80, 20);
btnClear.setForeground(Color.GREEN);
btnCheck = new JButton("查找信息");
btnCheck.setBounds(350, 145, 160, 50);
btnCheck.setForeground(Color.BLACK);
btnFirst = new JButton("|<<");
btnFirst.setBounds(50, 432, 80, 20);
btnFirst.setForeground(Color.PINK);
btnPrev = new JButton("<");
btnPrev.setBounds(150, 432, 80, 20);
btnPrev.setForeground(Color.BLACK);
btnNext = new JButton(">");
btnNext.setBounds(250, 432, 80, 20);
btnNext.setForeground(Color.BLACK);
btnLast = new JButton(">>|");
btnLast.setBounds(350, 432, 80, 20);
btnLast.setForeground(Color.PINK);
this.add(labNo);
this.add(labName);
this.add(labAge);
this.add(labscore1);
this.add(txtNo);
this.add(labTip);
this.add(txtName);
this.add(txtAge);
this.add(txtscore1);
this.add(btnAdd);
this.add(btnRemove);
this.add(btnModify);
this.add(btnClear);
this.add(btnFirst);
this.add(btnPrev);
this.add(btnNext);
this.add(btnLast);
this.add(btnCheck);
this.add(labavr);
this.add(labscore2);
this.add(txtscore2);
this.add(labscore3);
this.add(txtscore3);
this.add(labscore4);
this.add(txtscore4);
}
public boolean blank() {
if (txtNo.getText().equals("")) {
dialog.showMessageDialog(null, "学号输入有误 请重新输入！");
return false;
}
if (txtName.getText().equals("")) {
dialog.showMessageDialog(null, "名字输入有误 请重新输入！");
return false;
}
if (txtAge.getText().equals("")) {
dialog.showMessageDialog(null, "班级输入有误 请重新输入！");
return false;
}if (txtscore1.getText().equals("")) {
dialog.showMessageDialog(null, "成绩输入有误 请重新输入！");
return false;
}if (txtscore2.getText().equals("")) {
dialog.showMessageDialog(null, "成绩输入有误 请重新输入！");
return false;
}
if (txtscore3.getText().equals("")) {
dialog.showMessageDialog(null, "成绩输入有误 请重新输入！");
return false;
}
if (txtscore4.getText().equals("")) {
dialog.showMessageDialog(null, "成绩输入有误 请重新输入！");
return false;
}
return true;
}
public void addStu() {
btnAdd.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
if (blank() == true) {
c.addStudent(new Student(txtNo.getText(), txtName.getText(), txtAge.getText(),txtscore1.getText(),txtscore2.getText(),txtscore3.getText(),txtscore4.getText()));
dialog.showMessageDialog(null, "学生信息已添加成功");
}}});
}
public void firstStudent() {
btnFirst.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
txtNo.setText(c.stuList.get(0).getNo());
txtName.setText(c.stuList.get(0).getName());
txtAge.setText(c.stuList.get(0).getAge());
txtscore1.setText(c.stuList.get(0).getscore1());
txtscore2.setText(c.stuList.get(0).getscore2());
txtscore3.setText(c.stuList.get(0).getscore3());
txtscore4.setText(c.stuList.get(0).getscore4());
}
});
}
public void lastStudent() {
btnLast.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
txtNo.setText(c.stuList.get(c.stuList.size() - 1).getNo());
txtName.setText(c.stuList.get(c.stuList.size() - 1).getName());
txtAge.setText(c.stuList.get(c.stuList.size() - 1).getAge());
txtscore1.setText(c.stuList.get(c.stuList.size() - 1).getscore1());
txtscore2.setText(c.stuList.get(c.stuList.size() - 1).getscore2());
txtscore3.setText(c.stuList.get(c.stuList.size() - 1).getscore3());
txtscore4.setText(c.stuList.get(c.stuList.size() - 1).getscore4());
}
});
}
public void previous() {
btnPrev.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
int n = 0;
for (int i = 0; i < c.stuList.size(); i++) {
if (c.stuList.get(i).getNo().equals(txtNo.getText())) {
n = i - 1;
}
}
if (c.stuList.get(0).getNo().equals(txtNo.getText())) {
dialog.showMessageDialog(null, "再无上一个学生");
} else {
txtNo.setText(c.stuList.get(n).getNo());
txtName.setText(c.stuList.get(n).getName());
txtAge.setText(c.stuList.get(n).getAge());
txtscore1.setText(c.stuList.get(n).getscore1());
txtscore2.setText(c.stuList.get(n).getscore2());
txtscore3.setText(c.stuList.get(n).getscore3());
txtscore4.setText(c.stuList.get(n).getscore4());
}
}
});
}
public void next() {
btnNext.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
int n = 0;
for (int i = 0; i < c.stuList.size(); i++) {
if (c.stuList.get(i).getNo().equals(txtNo.getText())) {
n = i + 1;
}
}
if (c.stuList.get(c.stuList.size() - 1).getNo().equals(txtNo.getText())) {
dialog.showMessageDialog(null, "再无下一个学生");
} else {
txtNo.setText(c.stuList.get(n).getNo());
txtName.setText(c.stuList.get(n).getName());
txtAge.setText(c.stuList.get(n).getAge());
txtscore1.setText(c.stuList.get(n).getscore1());
txtscore2.setText(c.stuList.get(n).getscore2());
txtscore3.setText(c.stuList.get(n).getscore3());
txtscore4.setText(c.stuList.get(n).getscore4());}
}
});
}
public void remove() {
btnRemove.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
if (c.stuList.size() == 0) {
JOptionPane.showMessageDialog(null, "没有该学生信息");
} else {
Student s = new Student(txtNo.getText(), txtName.getText(), txtAge.getText(),txtscore1.getText(),txtscore2.getText(),txtscore3.getText(),txtscore4.getText());
if (blank() == true) {
System.out.println(c.stuList.contains(s));
System.out.println(s);
if (!c.stuList.contains(s)) {
c.deleteStudent(s);
JOptionPane.showMessageDialog(null, "已经删除成功");
int a = 0;
for (int i = 0; i < c.stuList.size(); i++) {
if (c.stuList.get(i).getNo().equals(txtNo.getText())) {
a = i + 1;
}
}
if (c.stuList.size() > 0) {
if (c.stuList.get(c.stuList.size() - 1).getNo().equals(txtNo.getText())) {
txtNo.setText(c.stuList.get(0).getNo());
txtName.setText(c.stuList.get(0).getName());
txtAge.setText(c.stuList.get(0).getAge());
txtscore1.setText(c.stuList.get(0).getscore1());
txtscore2.setText(c.stuList.get(0).getscore2());
txtscore3.setText(c.stuList.get(0).getscore3());
txtscore4.setText(c.stuList.get(0).getscore4());
} else {
txtNo.setText(c.stuList.get(a).getNo());
txtName.setText(c.stuList.get(a).getName());
txtAge.setText(c.stuList.get(a).getAge());
txtscore1.setText(c.stuList.get(a).getscore1());
txtscore2.setText(c.stuList.get(a).getscore2());
txtscore3.setText(c.stuList.get(a).getscore3());
txtscore4.setText(c.stuList.get(a).getscore4());
}
} else {
clear();
}
} else {
dialog.showMessageDialog(null, "未来找到对应学生的信息"); }}
}
}
});
}
public void modify() {
btnModify.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
if (c.stuList.size() == 0) {
dialog.showMessageDialog(null, "没有该学生信息");
}
for (Student s : c.stuList) {
if (s.getNo().equals(txtNo.getText())) {
if (blank() == true) {
s.setName(txtName.getText());
s.setAge(txtAge.getText());
JOptionPane.showMessageDialog(null, "已经修改成功");
return;
}
}
}
JOptionPane.showMessageDialog(null, "修改失败请重新操作");
}
});
}
public void check() {
btnCheck.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
if ((txtNo.getText().equals(""))) {
dialog.showMessageDialog(null, "学号不能为空 请从新输入");
} else {
int m = 0;
for (int i = 0; i < c.stuList.size(); i++) {
if (c.stuList.get(i).getNo().equals(txtNo.getText())) {
JOptionPane.showMessageDialog(null, "已查到该学生信息");
txtName.setText(c.stuList.get(i).getName());
txtAge.setText(c.stuList.get(i).getAge());
txtscore1.setText(c.stuList.get(i).getscore1());
txtscore2.setText(c.stuList.get(i).getscore2());
txtscore3.setText(c.stuList.get(i).getscore3());
txtscore4.setText(c.stuList.get(i).getscore4());
break;}
m++;}
if (m == c.stuList.size()) {
dialog.showMessageDialog(null, "没有此学生的相关信息");
return; }
}
}
});
}
public void clear() {
btnClear.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
txtNo.setText("");
txtName.setText("");
txtAge.setText("");
txtscore1.setText("");
txtscore2.setText("");
txtscore3.setText("");
txtscore4.setText("");
}
}
);
}
public static void main(String[] args) {
new menu();
}
}