mainwin.java

小型零售商店管理数据库管理

package retail;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;

 class MainWin  extends JFrame implements MouseListener{

	 JMenuBar bar=null;JMenu menu1,menu2,menu3,menu4;
	 JMenuItem item1,item2,item3;JButton jb;
	 Stocking stocking;Storing storing;Sales sales;
	 MainWin(){
		 setTitle("JDBC示例");bar=new JMenuBar();
		 menu1=new JMenu("进货管理");menu2 =new JMenu("库存管理");
		 menu3=new JMenu("销售管理");menu4=new JMenu("退出");
		 bar.add(menu1);bar.add(menu2);bar.add(menu3);
		 bar.add(menu4);this.setJMenuBar(bar);
		 menu1.addMouseListener(this); menu2.addMouseListener(this);
		 menu3.addMouseListener(this); menu4.addMouseListener(this);
		 stocking=new Stocking();storing=new Storing();
		 sales=new Sales();setVisible(true);
	 }
	 public void mouseClicked(MouseEvent e){
		 if(e.getSource()== menu1){
			 remove(storing);remove(sales);
			 getContentPane().add(stocking,"Center");
			 this.repaint();validate();
		 }
		 else if(e.getSource()== menu2){
			 remove(stocking);remove(sales);
			 getContentPane().add(storing,"Center");
			 this.repaint();validate();
		 }
		 else if(e.getSource()== menu3){
			 remove(stocking);remove(storing);
			 getContentPane().add(sales,"Center");
			 this.repaint();validate();
		 }
		 if(e.getSource()== menu4){
			 System.exit(0);
			 
		 }
	 }
	 public void mouseReleased(MouseEvent e){}
     public void mouseEntered(MouseEvent e){}
     public void mousePressed(MouseEvent e){}
     public void mouseExited(MouseEvent e){}
}