指出下列Java语句中的错误，并说明错误原因。 public class VVW{ static int i=10; public static void main(String args[]){ { int k=10; System. out. println("i="+i); System. out. println("k="+k); } System. out. println("i="+i); System. out. ⁤println(''k=''+k);⁤ 〕 〉

错误原因：第一行缺少分号，应该是public class VVW{；第7行缺少加号，应该是System.out.println("i="+i);；第8行使用了单引号，应该使用双引号，应该是System.out.println("k="+k);。

正确代码：

public class VVW{
static int i=10;
public static void main(String args[]){
{
int k=10;
System.out.println("i="+i);
System.out.println("k="+k);
}
System.out.println("i="+i);
System.out.println("k="+k);
}
}

相关问题

PrivateKey和KeyUtils私钥还有merchantPrivateKey怎么以c#的格式进行编写

在C#中，可以使用以下代码来编写PrivateKey和merchantPrivateKey：

string privateKey = "-----BEGIN PRIVATE KEY-----\n" +
                     "MIICXQIBAAKBgQCf1zr3Acv5w5t0a7fC0JpNq+4jT0gJWJVeD3u3VBrO9BkNUy5v\n" +
                     "g2atXK3z6VH0GfwlJw8xOPjZJ4M/9YyUhhG9C5r1QK9jOooQhceXZ+2lG6S6X+Jb\n" +
                     "7M7qL1y9j5hvX3t6xM8fNv6Nk6DRaRcGBJqC4hZDz6OeWnXJ8QzIuWt5lwIDAQAB\n" +
                     "AoGBAIx6qKrF7O1V4Jg6zGx9iS1N9OQnNBk0er6t+L0I0LIbP0h3g7Y9ZJ4eZ+4j\n" +
                     "2dImJ/4l+O6zRvKm5D2XJ1Q2v6fMNk2C5QpCjQ5gPZ3qMgHGbB0uTl9yZBz8kY5r\n" +
                     "PGwCvZy9JbAZXJdaA2RbZ0O4gUfPmX4GdJl8OosXm7Rv9tMaYp+KvTn3UcK0mCvZ\n" +
                     "X4h9ZD9mSvIY1nDhAkEA3I3Jx8cIz6mH8Dg1Xa7Ls1VxQc9qjWvR7FhHfR1kL1oD\n" +
                     "y6q0z0LlFb0zvJ2vLyJjP7s7K+3kbm0j6nIgPm/p3wJBANJop3gPbP9ZqBc0yFqC\n" +
                     "7BPZpRpycGtygK6XeA4GkyqNn1tZLseC9X7pGJ8f7l7zjz2dGk6LI9XmC6FyQGf5\n" +
                     "JXj8xPMCQQC9vRr/iuV4N4M8wzKJHbGKk1B5d1q5yQeQn1vSg9Y7z9Nl5j7p4JUx\n" +
                     "fBRoPc5zdJ7w4M9iX5J6aXgFQ6WkZQx1AkBvQdOQZdgc6+dcBkeqzTYfzrEJfB8j\n" +
                     "Oq+L03xN+DZg+QIi5RZSGV5G+XJGwWzrUZz8JzXySfR6F8Q4gK4qsPqxAkBcH4cL\n" +
                     "ZBd+Jd+2SbG1nY1k0qFPjKp2Tz7B6QjFRZUWx3Bz6gYmz5h76fOu7Jf5mV1jYt9z\n" +
                     "F8nDyP1zE6QY9tNw\n" +
                     "-----END PRIVATE KEY-----";

string merchantPrivateKey = "-----BEGIN PRIVATE KEY-----\n" +
                            "MIIEvQIBADANBgkqhkiG9w0BAQEFAASCBKcwggSjAgEAAoIBAQCo1ng4NiYsCyyw\n" +
                            "FL8eL1+2+oDAGvQH7NDcdkrZbLXqgdrfLjQJlP/8tWwL1UgIjN9MqA5XqXvJ1ZqV\n" +
                            "2r0QmY7zLq/dRyBvz4oiG9vWjXJz7xK4iCRINaB+UgrOv3dFm1qk7sS6DgZaWl7c\n" +
                            "Z8MvNkqzHbM2f5j+YtO0BF9Xt7rD2H1h+gRQzUuXrKfNxrEhA0G7VpeoL1thJgB5\n" +
                            "Kj0jH0IqdTKaY3hK7DqJfEa0yZyPZBw7OyLshKp2rXVQKVXW3QpDvQsCfQ8A+K6z\n" +
                            "a4u2rE5Hk1Sd3AqRQbJ/zdSNmQZ1m4jWtWbGf5Q4LkKpG4y2zT8PvSdNlne9xUQm\n" +
                            "M9E7fTIVAgMBAAECggEBAJjVSQ8tD/UgjIv0KZl7oJdIXa4a7wQfF2LjSjJfjCJj\n" +
                            "L0Wn9zjBzVUGW7OzrMK3L0hlYc3nOcDB9tjX7F7/F5Ia+Y5Hk2yZVU6z9h+PBZ0z\n" +
                            "7Tje7V5QWZx3jzQ7x/P3q7vN0fXr1O9b2yyhZuX7yRZ9PpQzrjIK/sVf3Yw+hLx7\n" +
                            "E1S4wUuQZUv1qCZvDS8tUqwlN/4J/nf2gH1x9x7sITGF7Zfj2tqZcVcL7B9Y2y8Z\n" +
                            "j3/7B5z5N8i+QKv+L4w3h7vz1mUyj5J8jG1TKT2aQs3KLQKxUxJ8KqY+qV9U7LxZ\n" +
                            "fGdJLzO7w6wyAq6fCgjVtDpL8Ys1zGcWd8J0Ee5b7IECgYEA1KcIsI9VOLm0+P+8\n" +
                            "6Q8Fr+Mx1JXJtj3YaW3Rn1W+IY7QaSIAfUQWU0fT4mJx9i2a6Fv1lbJXxuKs4A+9\n" +
                            "GkzvNv1Lq8VlZmp3pKJUOeLsG4Z7LJfE1q5Lq8BU6Q2nQrVnYhH3qX9aXhVgP1kP\n" +
                            "X+Y3QlcP9j7vE0YmGwL5DlFhN2kCgYEA0VwDrXAR4fKazOYofRZk7Ee0QOdNQ7lI\n" +
                            "AfRyr1xg8dX6Lm9p1BjsK4E2v1jLcJ+Uq4EwMnVHvF8wQoUj5wOjdx5yBd0kNc7P\n" +
                            "k4gbo1w9vVW6T0M7mLpF4aXZTjGQ5x7K2JVlD8lC/eC7Lh1n4yKJ3s8PQgRcX71g\n" +
                            "Vf3JnpiE/XcCgYBjNlEJhfnOZS9+5jkjyrB7c6qK/7cKfVDPk2Y6J8zQKt8lJlV9\n" +
                            "kDq9aJwW8OG8LZHiH1q3Kqj1bqTNF8CJnU/JL3z1i7U9Yi2TzCF0L6XN5eJZVvJq\n" +
                            "U1kN7hGfR8yM6OkbKl0ASyIX4ZmSvKKXJWt7F8cJ4KGqjwS6Us9v15n9cwKBgQCo\n" +
                            "XQvAJjF7B8Xf1r9Y8d6YJt5Jt0e1cjvWqN+W9lQwzz9vJMcQd8xNlJBo4WUPVHTu\n" +
                            "xV1S2jZz8E7rZz4zgjFqSeDkx2QsX5YQI0x6f3p+9Ry3Q+qysjv5zC0zJ7XQ7x2S\n" +
                            "Of0QkQ2Qq4J3VZq3rJm0KQVzIyDLY1pH9vtvTqYZ7QKBgQCbJUQuHv3ZnC1S9qYh\n" +
                            "H/xjLJ4+JY60f5E4gO2MfFbVKs9rI0U/N1xNvU3mHJZQf3a3i/8s3vngJw4bYjK/\n" +
                            "3I7ie0fRcXOX9RLXnKB6dJmZfQJ2Sdyx0c1V5ExNjQ4WlSXXyF7hO3Hk7jWm+3nI\n" +
                            "1l9ZdHhL2J0f1K09t2M5bOw1NQ==\n" +
                            "-----END PRIVATE KEY-----";

而要编写KeyUtils，可以使用以下代码：

using System.Security.Cryptography;
using System.Text;

public static class KeyUtils
{
    public static string Sign(string data, string privateKey)
    {
        var rsa = RSA.Create();
        rsa.FromJsonString(privateKey);
        var dataBytes = Encoding.UTF8.GetBytes(data);
        var signatureBytes = rsa.SignData(dataBytes, HashAlgorithmName.SHA256, RSASignaturePadding.Pkcs1);
        var signature = Convert.ToBase64String(signatureBytes);
        return signature;
    }
}

其中，`privateKey`是使用上面的代码编写的私钥字符串，`Sign`方法用于对数据进行签名。你可以将此代码集成到你的项目中并根据需要进行调整。