-1 
package com.sample;

import java.sql.DriverManager;
import com.mysql.jdbc.Connection;

public class connectionclass {
    public static void main(String args) {
        System.out.println("MySql Connect Example");
        Connection conn = null;
        String url = "jdbc:mysql://localhost:3306/";
        String dbName = "testdatabase";
        String driver = "com.mysql.jdbc.Driver";
        String userName = "root";
        String password = "root";
        try {
            Class.forName(driver).newInstance();
            conn = (Connection) DriverManager.getConnection(url + dbName,
                    userName, password);
            System.out.println("Connected to the database");
            conn.close();
            System.out.println("Disconnected from database");
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

此代码连接到数据库并且没有给出语法错误。我在 Eclipse 中执行此操作，当我运行项目时，它会询问我们需要运行哪个类，但我的类不存在。

4

2 回答 2

3

请更正此行

public static void main(String[] args)
于 2013-09-18T06:54:41.220 回答
1

main 方法接受字符串数组的参数，所以这样做

public static void main(String args[])
于 2013-09-18T06:55:28.300 回答