login.java

这是一个简单的考试系统

package login.UI;

import java.awt.Label;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.ArrayList;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JTextField;

import com.pogo.Grade;
import com.tool.createGrade;
import com.tool.createName;
import com.tool.readExcel;

public class login extends JFrame implements ActionListener{
	private JTextField jt;
	private JButton ok;
	ArrayList list;
	login(){
		super("请输入姓名：");
		this.setDefaultCloseOperation(3);
		this.setLocation(300,300);
		this.setSize(300, 100);
		this.setResizable(false);
		list=createName.run();
		jt=new JTextField(10);
		ok=new JButton("确定");
		ok.addActionListener(this);
		JPanel jp=new JPanel();
		jp.add(new Label("请输入姓名："));
		jp.add(jt);
		jp.add(ok);
		this.add(jp);
		this.setVisible(true);
	}
	public static void main(String[] args) {
		new login();
	}
	public void actionPerformed(ActionEvent e) {
		boolean temp=false;
		if(e.getSource()==ok){
			for(int i=0;i<list.size();i++)
			{
				if(jt.getText().equals(list.get(i))){
					temp=true;
					break;
				}				
			}
			if(temp!=true)
				{
				JOptionPane.showMessageDialog(null, "您的名字不在考试名单中！");
				return;
				}
			ArrayList l1=readExcel.run();
			for(int i=0;i<l1.size();i++){
				if(((Grade)l1.get(i)).getName().equals(jt.getText()))
					if(JOptionPane.showConfirmDialog(this, "您的成绩已存在，重新答题吗？","重新答题吗？",JOptionPane.YES_NO_OPTION)==1)
					{
						return;
					}
			}
			this.dispose();
			new main(jt.getText());
		}
		
	}
}