Answer:
In Email's Subject Line “Re:” most commonly understood as “Reply/Response” to an Email. “Re: ” is not taken as abbreviation of Regards/Reference. For Reference, Abbreviation is “Ref.”Explanation:
Answer:
following types of databases available in the market −
Centralised database.
Distributed database.
Personal database.
End-user database.
Commercial database.
NoSQL database.
Operational database.
Relational database.
Cloud database.
Object-oriented database.
Graph database
Answer:
import java.util.Scanner;
public class HollowSquare
{
public static void main(String args[])
{
Scanner scan = new Scanner(System.in);
int size;
System.out.print("Enter the size : ");
size = scan.nextInt();
if(size>=1 && size<=20)
{
for(int i=0; i<size; i++)
{
for(int j=0; j<size; j++)
{
if(i==0 || j==0 || i==size-1 || j==size-1)
System.out.print("*");
else
System.out.print(" ");
}
System.out.println();
}
}
else
System.out.println("Invalid size.");
}
}
