java为什么找不到主函数

一口一个菠萝 2017-06-16 10:38:07



package Gui;



import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;



import javax.swing.JFrame;

import javax.swing.JMenu;

import javax.swing.JMenuBar;

import javax.swing.JMenuItem;



public class Menu {

	private JFrame f = new JFrame("*****欢迎登录学生信息系统*****");



	public void caidan() {

		// TODO Auto-generated method stub



		JMenu menu = new JMenu("操作");



		JMenuBar menuBar = new JMenuBar();



		JMenuItem insert = new JMenuItem("增加");

		JMenuItem delete = new JMenuItem("删除");

		JMenuItem revise = new JMenuItem("修改");

		JMenuItem search = new JMenuItem("查询");



		menu.add(insert);

		menu.add(delete);

		menu.add(revise);

		menu.add(search);



		menuBar.add(menu);



		f.setJMenuBar(menuBar); // 在窗体中加入JMenuBar组件



		// 添加

		insert.addActionListener(new ActionListener() {



			public void actionPerformed(ActionEvent e) {

				// TODO Auto-generated method stub

				Import it = new Import();

				it.daoru();

				f.dispose();

			}

		});

		// 删除

		delete.addActionListener(new ActionListener() {



			public void actionPerformed(ActionEvent e) {

				// TODO Auto-generated method stub

				Delete d = new Delete();

				d.delete();

				f.dispose();

			}

		});



		// 修改

		revise.addActionListener(new ActionListener() {



			public void actionPerformed(ActionEvent e) {

				// TODO Auto-generated method stub

				Revise r = new Revise();

				r.revise();

				f.dispose();

			}

		});

		// 查询

		search.addActionListener(new ActionListener() {



			public void actionPerformed(ActionEvent e) {

				// TODO Auto-generated method stub

				SearchBy s = new SearchBy();

				s.searchBy();

				f.dispose();

			}



		});



		f.setSize(400, 400);

		f.setLocation(400, 170);

		// f.getContentPane().setBackground(Color.cyan);



		f.setVisible(true);



	}

	

	public static void main(String[] args) {

		Menu dl = new Menu();

		dl.caidan();

	}

}