java.lang.NoSuchMethodError:没有与JDBC相关的虚拟方法组（Ljava/lang/String；）

我实际上是在android应用程序中处理数据库（使用android studio）。我坚持这个错误说：

java.lang.NoSuchMethodError: No virtual method group(Ljava/lang/String;)Ljava/lang/String; in class Ljava/util/regex/Matcher; or its super classes (declaration of 'java.util.regex.Matcher' appears in /system/framework/core-libart.jar)

所以，问题是，我的代码是编译的，我有所有可以编译的东西，但当我执行这部分时，它会关闭我的应用程序。因为java/android studio中的DB对我来说是新的，所以我将接受您的所有提示

老实说，我不明白我该怎么做

下面是我在代码中使用和调用的类：

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;

public class MySQLConnector {
    private static final String url = "jdbc:mysql://localhost:3306/mydb";
    private static final String user = "root";
    private static final String password = "password";

    private  Connection con;
    private  Statement stmt;
    private  ResultSet rs;

    public MySQLConnector() throws SQLException {
        try { 
            Class.forName("com.mysql.cj.jdbc.Driver").newInstance();
            con = DriverManager.getConnection(url, user, password);
            stmt = con.createStatement();

        } catch (IllegalAccessException e) {
            e.printStackTrace();
        } catch (InstantiationException e) {
            e.printStackTrace();
        } catch (SQLException e) {
            e.printStackTrace();
        } catch (ClassNotFoundException e) {
            e.printStackTrace();
        }
    }
    void sendUpdate(String req) throws SQLException {
        stmt.executeUpdate(req);
        System.out.println("Command executed");

    }
    public void sendRequest(String req) throws SQLException {
        rs = stmt.executeQuery(req);
        System.out.println("Command executed");

    }
}

public class Check extends AppCompatActivity {
    private Button finApp ;
    private Intent intent;
    private String sessionID;
    private MySQLConnector connector;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_check);
        intent = getIntent();
        sessionID = intent.getStringExtra("SessionID");
        System.out.println("oncreatebutton");
        finApp=findViewById(R.id.button);
        try {
            connector = new MySQLConnector();
            connector.sendRequest("Select * from users");
        } catch (SQLException e) {
            e.printStackTrace();
        }
        finApp.setOnClickListener(v -> {
            try {
                connector.sendUpdate("INSERT INTO users (first_name,last_name," +
                        "date_created,is_admin,num_points) VALUES('name','lastname',now(),0,6)");
            } catch (SQLException e) {
                e.printStackTrace();
            }
            System.out.println("test");

            System.out.println("Session id is :" + sessionID);
            finish();
        });
    }
}

下面是我的代码中的一个使用示例：

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;

public class MySQLConnector {
    private static final String url = "jdbc:mysql://localhost:3306/mydb";
    private static final String user = "root";
    private static final String password = "password";

    private  Connection con;
    private  Statement stmt;
    private  ResultSet rs;

    public MySQLConnector() throws SQLException {
        try { 
            Class.forName("com.mysql.cj.jdbc.Driver").newInstance();
            con = DriverManager.getConnection(url, user, password);
            stmt = con.createStatement();

        } catch (IllegalAccessException e) {
            e.printStackTrace();
        } catch (InstantiationException e) {
            e.printStackTrace();
        } catch (SQLException e) {
            e.printStackTrace();
        } catch (ClassNotFoundException e) {
            e.printStackTrace();
        }
    }
    void sendUpdate(String req) throws SQLException {
        stmt.executeUpdate(req);
        System.out.println("Command executed");

    }
    public void sendRequest(String req) throws SQLException {
        rs = stmt.executeQuery(req);
        System.out.println("Command executed");

    }
}

public class Check extends AppCompatActivity {
    private Button finApp ;
    private Intent intent;
    private String sessionID;
    private MySQLConnector connector;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_check);
        intent = getIntent();
        sessionID = intent.getStringExtra("SessionID");
        System.out.println("oncreatebutton");
        finApp=findViewById(R.id.button);
        try {
            connector = new MySQLConnector();
            connector.sendRequest("Select * from users");
        } catch (SQLException e) {
            e.printStackTrace();
        }
        finApp.setOnClickListener(v -> {
            try {
                connector.sendUpdate("INSERT INTO users (first_name,last_name," +
                        "date_created,is_admin,num_points) VALUES('name','lastname',now(),0,6)");
            } catch (SQLException e) {
                e.printStackTrace();
            }
            System.out.println("test");

            System.out.println("Session id is :" + sessionID);
            finish();
        });
    }
}

是那些失败的吗

---

非常感谢所有试图提供帮助的人。

从未听说过android中的mysql。我想您可能需要使用SQLite或使用远程连接。它确实工作了一两次，而且我能够从数据库中读取信息。你认为使用SQLite会更容易@RicardoA吗？我不知道你想做什么。如果您只需要处理手机中的信息，最好使用SQLite，否则如果代码正常，您可能就找到了正确的路径。我应该能够在1个发送方和X个接收方之间拥有一个共享数据库。和send应该能够获取“接收方”在同一数据库中发送的数据项。另外，您的评论让我想到了如何使用多台设备获取本地数据库。这可能就是问题所在。似乎您正在使用特定的SDK（或库）。你应该在问题中说明这一点，这样别人就更容易发现问题。