>* *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(); } }
