JDBC

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;

public class Test {
	public static void main(String[] args) throws Exception {

		Class.forName("com.mysql.jdbc.Driver");
		Connection con = DriverManager.getConnection("jdbc:mysql://localhost:3306/platform","root","admin");
		PreparedStatement stmt = con.prepareStatement("");
		stmt.setString(1, "");
		stmt.executeUpdate();

		PreparedStatement pStmt = con.prepareStatement("");
		ResultSet result = pStmt.executeQuery();
		if (result.next()) {
			System.out.println(result.getInt(1));
		}

		// 应该上述操作都在try中， 并且添加finally关闭ResultSet PreparedStatement Connection 
	}
}