Create the UNIX Echo class in Java

Question

I am very very new to java and I'm trying to create the echo class found in UNIX in java. Basically, if I type in:

Echo 'i love you'

the command line prints

i love you

I have that part figured out, however, I can't seem to figure out the command line option -n which gets rid of the newline

I edited by code after reading the comment. However, it is still not doing what I hoped. My new code

The output of my new code As you can see, even after I enter the -n, the word is still on a newline

System.out.println will always print a new line! Try System.out.print — bdavies6086, Feb 21 '16 at 18:56
Please copy and paste your code into your question. Don't worry about formatting, someone will do it for you — OneCricketeer, Feb 21 '16 at 18:57
Don't post image of your code but your code itself. More info: http://meta.stackoverflow.com/a/285557/1393766 — Pshemo, Feb 21 '16 at 18:58
@Elina0524 Brilliant! I shall post it as an answer so you can close this one :) — bdavies6086, Feb 22 '16 at 19:41

score 2 · Answer 1 · answered Feb 21 '16 at 18:56

2

In Java the array starts with 0. So the code should look like this>

if (args[0].equals("-n")

By the way, you should compare two strings with string.equals(..) method, not with the double equation operator.

answered Feb 21 '16 at 18:56

1

@cricket_007 no, not in Java, so `args[0]` doesn't contain `java` or `javaw` but simply first argument used after `java Class args`. – Pshemo Feb 21 '16 at 18:58
wouldn't args[0] be Echo? Because if I type in : java Echo -n 'HelloWorld', I assume Echo would be args[0], -n would be args[1] and HelloWorld would be args[2] – Lin0523 Feb 21 '16 at 18:59
She calls **echo** not **Echo** – Nikolas Charalambidis Feb 21 '16 at 19:00

score 1 · Accepted Answer · answered Feb 22 '16 at 19:41

1

The solution, as seen in the comments is to use System.out.print as opposed to System.out.println

answered Feb 22 '16 at 19:41

bdavies6086

2 Answers2