This is a Basic Java Calculator using If..ElseIf..Else Statement.
2012
import java.util.Scanner;
class completename{
public static void main(String args[]){
Scanner user_input = new Scanner(System.in);
String first_name,last_name;
System.out.print("first name:");
first_name = user_input.next( );
System.out.print("last name:");
last_name = user_input.next( );
System.out.print(first_name + " " + last_name);
}
}