Answer:
import java.util.ArrayList;
import java.util.List;
public class Vowels {
public static void main(String[] args) {
String word = "I am David from Nigeria";
System.out.println(which_vowels_present(word));
}
public static List which_vowels_present(String enteredWord){
List<Character>list = new ArrayList<>();
String word = enteredWord.toLowerCase();
for (int i =0; i<word.length(); i++){
if (word.charAt(i) == 'a' || word.charAt(i) == 'e' || word.charAt(i) == 'i'
|| word.charAt(i) == 'o' || word.charAt(i) == 'u') {
list.add(word.charAt(i));
}
}
return list;
}
}
Explanation:
- Using Java programming Language
- Import java.util.ArrayList; and java.util.List
- Create the method which_vowels_present which accepts a string parameter
- Within the method create a list object
- Use a for loop to iterate the string. within the for loop use an if statement to check individual characters of the string if any is a vowel, add it to the list
- return the list
- In the main method, create a test string, call the method and pass the string as parameter
Answer:
Security in communication between applications and sites in m-commerce can use SSL technology.
Explanation:
While developing an app, developers have to perform several checks and ensure that the server has a legitimate certificate.
Answer:
B. False
Explanation:
A page-replacement policy can be defined as a set of algorithm that instructs the operating systems on what memory page is to be swapped, paged out or written to disk in order to allocate more memory as they're required by various active processes during virtual memory management.
Some of the algorithms or techniques used by the operating system for page-replacement policy are;
1. Last In First Out (LIFO).
2. First In First Out (FIFO).
3. Least Recently Used (LRU).
4. Least Frequently Used (LFU).
5. Optimal (OPT or MIN).
Hence, the page-replacement policy means that pages are placed to make more space and to minimize the total number of page that would be missing.
Answer:
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