Write a Java program that displays all 4-character strings in lexicographic order (alsocalled dictionary order) on the screen. It must display a string of 4 characters per line.Only the characters a, b, c, d are allowed within character strings, but you can reuse thesame character more than once within the same string. Within the same string, thecharacter "b" must always be immediately followed by the character "a". The same stringcannot contain both the character "d" and the character "a". Your program should end withthe number of character strings displayed on the screen. Your program receives nothingas input. Your program code must not include pre-calculated strings: it must generatethem at runtime. Your program should not contain more than 200 short lines of code.
Java project Create a method which accepts a number as a parameter and returns the Fibonacci series up to that number. The Fibonacci series is a series
Java project Create a method which accepts a number as a parameter and returns the Fibonacci series up to that number. The Fibonacci series is a series of numbers in which each number is the sum of the two that precede it. Starting at 0 and 1, the sequence looks