package com.wasteinformationserver.db; import com.wasteinformationserver.basicutils.Log; import java.sql.Connection; import java.sql.PreparedStatement; import java.sql.ResultSet; import java.sql.SQLException; public class JDCB { Connection conn; public JDCB(String username, String password, String dbname) { Database db = new MySQLConnector( username, password, "192.168.65.15", 3306, dbname); try { conn = db.getConnection(); } catch (SQLException e) { Log.error("no connection to Database!"); } } public ResultSet executeQuery(String sql) { try { PreparedStatement stmt = conn.prepareStatement(sql); return stmt.executeQuery(); } catch (SQLException e) { e.printStackTrace(); } return null; } public int executeUpdate(String sql) { try { PreparedStatement stmt = conn.prepareStatement(sql); return stmt.executeUpdate(); } catch (SQLException e) { e.printStackTrace(); } return -1; } }