insertstudent.java

一个JAVA的学生管理系统,用的是GUI的图形用户界面.

import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
import javax.swing.event.*;
import java.sql.*;




//////////////开始的入口处在pp2






class InsertStudent{
	JFrame f=new JFrame("添加学生用户窗口");
	JTextField tf1=new JTextField(8),tf2=new JTextField(8),tf3=new JTextField(8),
				tf4=new JTextField(8),tf5=new JTextField(8),tf6=new JTextField(8),
				tf7=new JTextField(8);
	JLabel lb=new JLabel("提示：");			
	String name=null,number=null,grade=null,clanguage=null,english=null,maths=null,more=null;			
	public static void main(String args[]){
		InsertStudent a=new InsertStudent();
		a.InsertStudent();
	}
	
	public InsertStudent(){}
	
	public void InsertStudent(){
		Container cp=f.getContentPane();
		cp.setLayout(new BorderLayout());
		JPanel pa1=new JPanel(new GridLayout(7,2)),pa2=new JPanel(new GridLayout(1,6)),pa3=new JPanel(new FlowLayout(FlowLayout.LEFT));
		pa1.add(new JLabel("姓名："));pa1.add(tf1);
		pa1.add(new JLabel("学号："));pa1.add(tf2);
		pa1.add(new JLabel("班级："));pa1.add(tf3);
		pa1.add(new JLabel("C语言（成绩）："));pa1.add(tf4);
		pa1.add(new JLabel("英语（成绩）："));pa1.add(tf5);
		pa1.add(new JLabel("数学（成绩）："));pa1.add(tf6);
		pa1.add(new JLabel("备注："));pa1.add(tf7);
		
		JButton bt1=new JButton("确定"),bt2=new JButton("取消");
		bt1.addActionListener(new Ok());
		bt2.addActionListener(new Cancel());
		pa2.add(new JLabel(""));
		pa2.add(new JLabel(""));
		pa2.add(new JLabel(""));
		pa2.add(bt1);
		pa2.add(bt2);
		pa2.add(new JLabel(""));
		
		pa3.add(lb);
		
		cp.add("North",pa1);
		cp.add("Center",pa2);
		cp.add("South",pa3);
		
		f.addWindowListener(new WinLis());
		f.pack();
		f.setVisible(true);
	}
	private class Ok implements ActionListener{
		public void actionPerformed(ActionEvent ae){
			StudentSql studentsql=new StudentSql();
			name=tf1.getText();number=tf2.getText();grade=tf3.getText();
			clanguage=tf4.getText();english=tf5.getText();maths=tf6.getText();
			more=tf7.getText();
			if(name.length()>=1){
				if(number.length()>=1){
					if(grade.length()>=1){
						if(clanguage.length()>=1){
							if(english.length()>=1){
								if(maths.length()>=1){
									if(more.length()>=1){
										try{
											studentsql.Insert(name,number,grade,clanguage,english,maths,more);
											int i=JOptionPane.showConfirmDialog(f,"添加成功！","对话框",JOptionPane.YES_OPTION,JOptionPane.INFORMATION_MESSAGE);
											if(i==0)f.dispose();
										}catch(Exception e){
											JOptionPane.showMessageDialog(f,"对不起，添加失败！","对话框",JOptionPane.ERROR_MESSAGE);
										}
									}else lb.setText("提示：请您输入学生备注！");
								}else lb.setText("提示：请您输入学生数学成绩！");
							}else lb.setText("提示：请您输入学生英语成绩！");
						}else lb.setText("提示：请您输入学生C语言成绩！");
					}else lb.setText("提示：请您输入学生班级！");
				}else lb.setText("提示：请您输入学生学号！");
			}else lb.setText("提示：请您输入学生姓名！");
		}
	}
	private class Cancel implements ActionListener{
		public void actionPerformed(ActionEvent ae){
			f.dispose();
		}
	}
	private class WinLis extends WindowAdapter{
		public void windowClosing(WindowEvent we){
			f.dispose();
		}
	}
}