remove.java

JAVA产品存储系统

import java.awt.Container;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.BufferedReader;
import java.io.FileReader;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.Statement;

import javax.swing.JButton;
import javax.swing.JDialog;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JTextField;
import javax.swing.SwingConstants;

class remove implements ActionListener{
	    JDialog dialog;
	    JTextField tF1=new JTextField();

	    remove(JFrame f){ //构造方法，从其调用方法中获得对话框的父窗口
	        dialog = new JDialog(f,"remove a production",true); //产生一modal对话框
	        Container dialogPane = dialog.getContentPane();//接下来注意添加各个组件
	        dialogPane.setLayout(new GridLayout(2,2));        
	        dialogPane.add(new JLabel("please input the production's ID  : ",SwingConstants.CENTER)); 
	        dialogPane.add(tF1);

	        JButton b1 = new JButton("ok");
	        dialogPane.add(b1);
	        JButton b2 = new JButton("no");
	        dialogPane.add(b2);              
	        b1.addActionListener(this);   //为两按钮增加事件监听器
	        b2.addActionListener(this);
	        dialog.setBounds(100,150,600,130);
	        dialog.show();

	    }

	    public void actionPerformed(ActionEvent e){
	    	
	    	String cmd=e.getActionCommand();

	    	if(cmd.equals("ok")){
	            try{
	            	int ID=Integer.parseInt(tF1.getText());
	            	FileReader fr=new FileReader("production.txt");
	                BufferedReader br=new BufferedReader(fr);
	                String line=br.readLine();
	                int i=1;
	                do{
	                	i++;
	                	line=br.readLine();
	                	}while(line.indexOf("ID: "+ID)!=-1);
          
	              }
	              catch(Exception ex){
			            System.out.println("can't finish your order");
	              }

	    	}				
	    	else if(cmd.equals("no")){
	    		System.exit(0);
	    	}
	    }
	}