tempmeasure.java

本书通过实例介绍了嵌入式编程的方法与技巧书中例子具有实用性

import java.sql.*;
import java.util.*;

public class TempMeasure implements Runnable
{
   static Thread thread;

   public TempMeasure(){
   }

   public void run()
   {
    int i=1,rows;
    try{
      	Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
	    java.sql.Connection conn = DriverManager.getConnection("jdbc:odbc:test2000");
	    Statement st = conn.createStatement();
    	while(true){
		  Calendar calendar = Calendar.getInstance();
		  String date = new String(calendar.get(Calendar.YEAR)+"-"+(calendar.get(Calendar.MONTH)+1)+"-"+calendar.get(Calendar.DATE));
     	  String time = new String(calendar.get(Calendar.HOUR)+":"+calendar.get(Calendar.MINUTE)+":"+calendar.get(Calendar.SECOND));
     	  int t1 = getTemp(0);
     	  int t2 = getTemp(1);
     	  int t3 = getTemp(2);
     	  int t4 = getTemp(3);
     	  String datetime = new String(date+" "+ time);

		  rows = st.executeUpdate("insert into security values("+i+",'"+datetime+"',"+t1+","+t2+","+t3+","+t4+")");
   		  System.out.println("Thread: "+i);
   		  try{
   		     thread.sleep(1000*60*60);
   		    }catch(Exception e){ e.printStackTrace(); }
   		  i++;
   		 }
       }catch(Exception e) { e.printStackTrace(); }
   }
   public int getTemp(int i){
		int t[] ={100,105,100,100};
		return t[i];
	}
   public static void main(String args[]){
	   TempMeasure tm = new TempMeasure();
	   thread = new Thread(tm);
	   thread.start();
   }
}