Yes it's true. It will save all the work you did on that paper. So yes, it is true!
Answer:
The answer is "Option B"
Explanation:
In the given code, a class "DateType" is declared, inside the class, four methods "Initialize, GetYear, GetMethod, and GetDay" is defined, in which the "Initialize" method does not return any value and other methods return a constant type value, which means it value can't be changed.
Inside the class three integer variable is defined, that is"year, month, and day". In the "GetDay" method call, it first creates the class object "day1", which is already defined in question and call the method by dot (.), that's why only choice b is correct.
Answer:
Primary storage refers to the main storage of the computer or main memory which is the random access memory or RAM. Secondary storage, on the other hand, refers to the external storage devices used to store data on a long-term basis.
Answer:
public static String onlyDigits(String in){
String digitsOnly = in.replaceAll("[^0-9]", "");
return digitsOnly;
}
A Complete program is wrtten in the explanation section
Explanation:
public class TestClass {
public static void main(String[] args) {
String a = "-jaskdh2367sd.27askjdfh23";
System.out.println(onlyDigits(a));
}
public static String onlyDigits(String in){
String digitsOnly = in.replaceAll("[^0-9]", "");
return digitsOnly;
}
}
The output: 23672723
The main logic here is using the Java replaceAll method which returns a string after replacing all the sequence of characters that match its argument, regex with an empty string
