Consider the Following Declarations: Public Interface Encryptable

question 47

Multiple Choice

Consider the following declarations: public interface Encryptable
{
Void encrypt(String key) ;
}
Public class SecretText implements Encryptable
{
Private String text;
_____________________________
{
// code to encrypt the text using encryption key goes here
}
}
Which of the following method headers should be used to complete the SecretText class?

• A) public void encrypt()
• B) public void encrypt(String aKey)
• C) public String encrypt(String aKey)
• D) void encrypt(String aKey)

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Definitions:

Moving Average Forecast

A method used in forecasting that calculates the average of a series of data points over specific time intervals to identify trends.

Observable Trend

A noticeable movement or direction in data over a period of time that can be analyzed and used for forecasting.

Seasonality

The tendency of certain businesses or economic activities to fluctuate during specific times of the year due to changes in weather, holidays, or other recurring events.

Holt's Model

A forecasting technique that extends exponential smoothing to capture both trend and seasonality in historical data for future prediction.