import java.awt.Color;
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import java.awt.Font;
import java.awt.Frame;
import java.awt.Label;
import java.awt.TextField;
import java.awt.Window;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.sql.SQLException;
import javax.swing.JButton;
public class Stmessege {
Font font = new Font("楷体", Font.BOLD, 18);
private Frame m = new Frame("登陆成功界面");
protected Window f;
public Stmessege() {
m.addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent evt) {
m.setVisible(false);
m.dispose();
System.exit(0);
}
});
m.setSize(460, 360);
m.setBackground(Color.green);
m.setLayout(null);
m.setLocationRelativeTo(null);
Label l0 = new Label("管理员信息");
Font font1 = new Font("楷体", Font.BOLD, 32);
l0.setForeground(Color.blue);
l0.setSize(180, 50);
l0.setLocation(150, 30);
l0.setFont(font1);
final Label l1 = new Label("姓名：");
l1.setSize(60, 20);
l1.setLocation(10, 100);
l1.setFont(font);
TextField tf1 = new TextField("黄朋");
tf1.setForeground(Color.blue);
tf1.setBackground(Color.white);
tf1.setSize(50, 20);
tf1.setLocation(70, 100);
final Label l2 = new Label("学号：");
l2.setSize(60, 20);
l2.setLocation(140, 100);
l2.setFont(font);
TextField tf2 = new TextField("111265");
tf2.setForeground(Color.blue);
tf2.setBackground(Color.white);
tf2.setSize(60, 20);
tf2.setLocation(190, 100);
final Label l3 = new Label("性别：");
l3.setSize(60, 20);
l3.setLocation(280, 100);
l3.setFont(font);
TextField tf3 = new TextField("男");
tf3.setForeground(Color.blue);
tf3.setBackground(Color.white);
tf3.setSize(40, 20);
tf3.setLocation(360, 100);
final Label l4 = new Label("班级：");
l4.setSize(60, 20);
l4.setLocation(10, 170);
l4.setFont(font);
TextField tf4 = new TextField("611231");
tf4.setForeground(Color.blue);
tf4.setBackground(Color.white);
tf4.setSize(60, 20);
tf4.setLocation(67, 170);
final Label l5 = new Label("系别：");
l5.setSize(60, 20);
l5.setLocation(140, 170);
l5.setFont(font);
TextField tf5 = new TextField("计算机工程系");
tf5.setForeground(Color.blue);
tf5.setBackground(Color.white);
tf5.setSize(80, 20);
tf5.setLocation(200, 170);
final Label l6 = new Label("成绩：");
l6.setSize(60, 20);
l6.setLocation(280, 170);
l6.setFont(font);
TextField tf6 = new TextField("95");
tf6.setForeground(Color.blue);
tf6.setBackground(Color.white);
tf6.setSize(40, 20);
tf6.setLocation(360, 170);
final Label l7 = new Label("专业：");
l7.setSize(60, 20);
l7.setLocation(10, 230);
l7.setFont(font);
TextField tf7 = new TextField("软件技术");
tf7.setForeground(Color.blue);
tf7.setBackground(Color.white);
tf7.setSize(60, 20);
tf7.setLocation(70, 230);
JButton btn1 = new JButton("添加");
btn1.setForeground(Color.blue);
btn1.setSize(80, 38);
btn1.setLocation(35, 300);
btn1.setFont(font);
btn1.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
// TODO Auto-generated method stub
new 插入();
m.setVisible(true);
}
});
JButton btn2 = new JButton("查询学生学籍信息");
btn2.setForeground(Color.blue);
btn2.setSize(200, 38);
btn2.setLocation(135, 300);
btn2.setFont(font);
btn2.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
Stmessege1 f;
try {
f = new Stmessege1();
f.Stmessege11();
m.setVisible(true);
} catch (SQLException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
} catch (ClassNotFoundException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
}
});
JButton btn3 = new JButton("删除");
btn3.setForeground(Color.blue);
btn3.setSize(80, 38);
btn3.setLocation(350, 300);
btn3.setFont(font);
btn3.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
// TODO Auto-generated method stub
new 删除();
//f.setVisible(false);
m.setVisible(true);
}
});
JButton btn4 = new JButton("更新");
btn4.setForeground(Color.blue);
btn4.setSize(80, 38);
btn4.setLocation(200, 230);
btn4.setFont(font);
btn4.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
// TODO Auto-generated method stub
new 更新();
m.setVisible(true);
}
});
m.add(l0);
m.add(l1);
m.add(tf1);
m.add(l2);
m.add(tf2);
m.add(l3);
m.add(tf3);
m.add(l4);
m.add(tf4);
m.add(l5);
m.add(tf5);
m.add(l6);
m.add(tf6);
m.add(l7);
m.add(tf7);
m.add(btn1);
m.add(btn2);
m.add(btn3);
m.add(btn4);
m.setVisible(true);
}
public static void main(String[] args) {
new Stmessege();
}
}
可以仿照我的做一下，希望采纳，我才一级哦
写过一个类似的给了你吧
package student;
import java.util.Scanner;
public class teststudent {
public static void main(String args[]){
System.out.println("************************学生成绩管理系统*********************");
System.out.println("请输入要管理的学生人数:");
Scanner sc = new Scanner(System.in);
int n = sc.nextInt();
studentMassage stum = new studentMassage(n);
int flag = 1;
while(flag == 1){
System.out.println("1.输入学生信息");
System.out.println("2.通过姓名查找学生信息");
System.out.println("3.显示全部学生信息");
System.out.println("4.退出系统");
int op = sc.nextInt();
switch(op){
case 1:stum.addStudent(n);
new Scanner(System.in).nextLine();
break;
case 2:
System.out.println("输入学生姓名：");
String name = sc.next();
stum.FindStudent(name);
new Scanner(System.in).nextLine();
break;
case 3:
stum.showallStudent();
new Scanner(System.in).nextLine();
break;
case 4:
flag = 0;
System.out.println("已退出系统！");
break;
default:
System.out.println("输入有误！");
new Scanner(System.in).nextLine();
}
}
}
}
class Date{
int year;
int month;
int day;
/*public Date(int year,int month,int day){
this.year = year;
this.month = month;
this.day = day;
}
public Date(){}*/
public String showDate(){
return year + "/"+ month+"/"+day;
}
}
class student{
int id;
String name;
Date date;
float score;
public student(){
id = 0;
name = null;
date = null;
score = 0f;
}
public void showStudent(){
System.out.println( id + " " + name + " "+ " " + date.showDate()+" "+score);
}
}
class studentMassage{
private student[] stu;
private int flag;
public studentMassage(int n){
flag = 0;
if(stu == null){
stu = new student[n];
for(int i =0;in;++i){
stu[i] = new student();
}
}
}
public void addStudent(int n){
flag = 1;
Scanner sc = new Scanner(System.in);
System.out.println("请输入"+n+"个学生信息");
for(int i = 0 ;istu.length;++i){
stu[i].date = new Date();
System.out.println("请输入第"+(i+1)+"个学生学号：");
stu[i].id = sc.nextInt();
System.out.println("请输入第"+(i+1)+"个学生姓名：");
stu[i].name = sc.next();
System.out.println("请输入第"+(i+1)+"个学生出生年份：");
stu[i].date.year = sc.nextInt();
System.out.println("请输入第"+(i+1)+"个学生出生月份：");
stu[i].date.month = sc.nextInt();
System.out.println("请输入第"+(i+1)+"个学生出生日期：");
stu[i].date.day = sc.nextInt();
//stu[i].date = new Date(year,month,day);
System.out.println("请输入第"+(i+1)+"个学生分数：");
stu[i].score = sc.nextFloat();
}
}
public void FindStudent(String sname){
student find = null;
if(flag != 0){
for(int i = 0;istu.length;++i){
if(sname.equals(stu[i].name))
find = stu[i];
}
if(find == null)
System.out.println("查无此人！");
else
find.showStudent();
}else
System.out.println("没有输入学生信息！");
}
public void showallStudent(){
System.out.println("所有学生的信息如下：");
System.out.println("学号 姓名 生日 分数");
for(int i = 0;istu.length;++i){
stu[i].showStudent();
}
}
}
import java.util.Scanner;
public class Student{
public static void main(String[] args){
Scanner sc = new Scanner(System.in);
System.out.println("请输入学生的人数....");
int num = sc.nextInt();
int[] arr = new int[num];
double[] chengji_arr = new double[num]; //存放成绩的
String[] String_arr = new String[num]; //存放姓名的
String chengjis = "";
String names = "";
for(int i = 0; i arr.length i String_arr.length i chengji_arr.length; i++){
arr[i] = i;
int s = 0;
Students st = new Students();
System.out.println("请输入第"+(arr[i]+1)+"个学生的序号！");
st.setId(sc.nextInt());
System.out.println("请输入第"+(arr[i]+1)+"个学生的姓名！");
st.setName(sc.next());
System.out.println("请输入第"+(arr[i]+1)+"个学生的成绩！");
st.setChengji(sc.nextDouble());
String_arr[i] = st.getName(); //保存成绩
chengji_arr[i] = st.getChengji();
}
int max = 0;
int tmp = 0;
for (int i = 0; i chengji_arr.length; i++) {
max = i;
for (int j = i + 1; j chengji_arr.length; j++) {
if (chengji_arr[max] chengji_arr[j])
max = j;// 记下较大数位置，再次比较，直到最大
}
if (i != max) {
tmp = (int)chengji_arr[i];
chengji_arr[i] = chengji_arr[max];
chengji_arr[max] = tmp;
}
}
for (int i = 0; i chengji_arr.length; i++)
System.out.print("成绩为："+chengji_arr[i] + " ");
}
}
class Students{
private int id;
private String name;
private double chengji;
public void setId(int id){
this.id = id;
}
public int getId(){
return id;
}
public void setName(String name){
this.name = name;
}
public String getName(){
return name;
}
public void setChengji(double chengji){
this.chengji = chengji;
}
public double getChengji(){
return chengji;
}
}
//代码没有交换学生数组下标，麻烦提问者再修改一下吧，真的要睡了，明天继续上班，抱歉，只能帮你到这里了。
以下方法实现了用户界面登陆
import java.awt.*;
import java.awt.event.*;
public class DengLuJieMian extends Frame implements ActionListener
{
Label username=new Label("用户名：");//使用文本创建一个用户名标签
TextField t1=new TextField();//创建一个文本框对象
Label password=new Label("密码：");//创建一个密码标签
TextField t2=new TextField();
Button b1=new Button("登陆");//创建登陆按钮
Button b2=new Button("取消");//创建取消按钮
public DengLuJieMian()
{
this.setTitle("学生信息管理系统");//设置窗口标题
this.setLayout(null);//设置窗口布局管理器
username.setBounds(50,40,60,20);//设置姓名标签的初始位置
this.add(username);// 将姓名标签组件添加到容器
t1.setBounds(120,40,80,20);// 设置文本框的初始位置
this.add(t1);// 将文本框组件添加到容器
password.setBounds(50,100,60,20);//密码标签的初始位置
this.add(password);//将密码标签组件添加到容器
t2.setBounds(120,100,80,20);//设置密码标签的初始位置
this.add(t2);//将密码标签组件添加到容器
b1.setBounds(50,150,60,20);//设置登陆按钮的初始位置
this.add(b1);//将登陆按钮组件添加到容器
b2.setBounds(120,150,60,20);//设置取消按钮的初始位置
this.add(b2);// 将取消按钮组件添加到容器
b1.addActionListener(this);//给登陆按钮添加监听器
b2.addActionListener(this);// 给取消按钮添加监听器
this.setVisible(true);//设置窗口的可见性
this.setSize(300,200);//设置窗口的大小
addWindowListener(new WindowAdapter()
{
public void windowClosing(WindowEvent e)
{
System.exit(0);
}
});//通过内部类重写关闭窗体的方法
}
public void actionPerformed(ActionEvent e)
{
if(e.getSource()==b1)//处理登陆事件
{
String name=t1.getText();
String pass=t2.getText();
if(name!=nullpass.equals("000123"))//判断语句
{
new StudentJieMian();
}
}
}
public static void main(String args[])//主函数
{
new DengLuJieMian();
}
}
以下方法实现了学生界面设计
import java.awt.*;
import java.awt.event.*;
class StudentJieMian extends Frame implements ActionListener
{
MenuBar m=new MenuBar();//创建菜单栏
Menu m1=new Menu("信息");//创建菜单“信息”
MenuItem m11=new MenuItem("插入");//创建“插入”的菜单项
MenuItem m12=new MenuItem("查询");
Menu m2=new Menu("成绩");//创建菜单“成绩”
MenuItem m21=new MenuItem("查询");
public StudentJieMian()
{
this.setTitle("学生界面");//设置窗口标题
this.setLayout(new CardLayout());//设置窗口布局管理器
this.setMenuBar(m);//将菜单栏组件添加到容器
m.add(m1);//将信息菜单放入菜单栏
m.add(m2);
m1.add(m11);//将“插入”菜单项添加到“信息”菜单
m1.add(m12); //将“查询”菜单项添加到“信息”菜单
m2.add(m21); //将“查询”菜单项添加到“成绩”菜单
m11.addActionListener(this); //给“插入”菜单项添加监听器
m12.addActionListener(this); //给“查询”菜单项添加监听器
m21.addActionListener(this); //给“查询”菜单项添加监听器
this.setVisible(true); //设置窗口的可见性
this.setSize(300,200); //设置窗口的大小
addWindowListener(new WindowAdapter()
{
public void windowClosing(WindowEvent e)
{
System.exit(0);//关闭窗口
}
});
}
public void actionPerformed(ActionEvent e)
{
if(e.getSource()==m11) //处理“添加信息”事件
{
new AddStudent();
}
if(e.getSource()==m12) //处理“查询信息”事件
{
new SelectStudent();
}
if(e.getSource()==m21) //处理“查询成绩”事件
{
new ChengJiStudent();
}
}
public static void main(String args[])
{ new StudentJieMian(); //创建一个对象 }
