JAVA问题??

import java.io.*;
import java.sql.*;
import java.util.*;
class first{

public static Connection getConnection()throws SQLException,IOException{
Properties props=new Properties();
FileInputStream in=new FileInputStream("database.properties");
props.load(in);
in.close();

String drivers=props.getProperty("jdbc.drivers", drivers);
if(drivers!=null)
System.setProperty("jdbc.drivers", drivers);

String url=props.getProperty("jdbc.url");
String username=props.getProperty("jdbc.username");
String password=props.getProperty("jdbc.password");
return DriverManager.getConnection(url,username,password);

}

public static void main(String[] args){
try{
Connection con=null;
Statement state=con.createStatement();
state.execute("CREAT TABLE Greetings(

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