用什么Java语言的语句可以搜索电脑中的数据库

import java.sql.*;

Connection conn = null;
try {
    String url = "jdbc:mysql://localhost:3306/your_database_name";
    String username = "your_username";
    String password = "your_password";
    conn = DriverManager.getConnection(url, username, password);
} catch (SQLException e) {
    e.printStackTrace();
}

Statement stmt = null;
try {
    stmt = conn.createStatement();
    String sql = "SELECT * FROM your_table_name WHERE column_name = 'search_keyword'";
    ResultSet rs = stmt.executeQuery(sql);
    while (rs.next()) {
        // 处理结果集
        String columnValue = rs.getString("column_name");
        System.out.println(columnValue);
    }
} catch (SQLException e) {
    e.printStackTrace();
} finally {
    // 关闭Statement对象
    try {
        if (stmt != null) {
            stmt.close();
        }
    } catch (SQLException e) {
        e.printStackTrace();
    }
}

try {
    if (conn != null) {
        conn.close();
    }
} catch (SQLException e) {
    e.printStackTrace();
}