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. void encrypt(String aKey).
c. public void encrypt(String aKey, int shift).
d. public void encrypt(String aKey).

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Explanation:

a variable of array type holds a reference of object

array are commonly used in computer program to organize data so that a related set of values

array are using zero base indexing it start with 0.

all component of array have same type, two different types doesn't use in single array

if array are store 10 quantities its index value varies from 0 to 9.

it stores 1st quantity value in index value 0 and this process will same till index value 9.