我DBConnection 里有main 函数阿,什么原因呢?
public static void main(String[] args) {
// DBConnectionManager DBConnectionManager1 = new DBConnectionManager();
try{
DBConnectionManager dcm = new DBConnectionManager();
Connection conn = dcm.getConnection();
Statement stmt=conn.createStatement();
ResultSet rs=stmt.executeQuery("select * from my_bookadminuser");
// stmt = conn.createStatement(); while(rs.next()){
System.out.print("名称: "+rs.getString(1));
System.out.print("\tpassword: "+rs.getString(2));
System.out.println();
}
//stmt.executeUpdate( "insert into my.txt values ('Ruby',27,'网络部')"); //*/
}catch(Exception e){
e.printStackTrace();
}
}
public static void main(String[] args) {
// DBConnectionManager DBConnectionManager1 = new DBConnectionManager();
try{
DBConnectionManager dcm = new DBConnectionManager();
Connection conn = dcm.getConnection();
Statement stmt=conn.createStatement();
ResultSet rs=stmt.executeQuery("select * from my_bookadminuser");
// stmt = conn.createStatement(); while(rs.next()){
System.out.print("名称: "+rs.getString(1));
System.out.print("\tpassword: "+rs.getString(2));
System.out.println();
}
//stmt.executeUpdate( "insert into my.txt values ('Ruby',27,'网络部')"); //*/
}catch(Exception e){
e.printStackTrace();
}
}
和有没有main方法无关
package org.pan.util;
import java.sql.*;