Java n00b needs some help. reading strings

[mchammer187]

How do I read in a string from the console?

so i am asking basically whats the equivalent of
char s[20];
cin.getline(s,20);

 

[Jzero]

It's annyoing. You have to use a bufferedreader.

 

[stev0]

errr... i know how to flowchart and write l337 psudocode... does that help?

stev0 <- java n00b in training 🙂

 

[Kilrsat]

Here's a few excerpts from one of my projects that involved many calls to the commandline:

//setup stuff

private static final BufferedReader STDIN = new BufferedReader( new InputStreamReader( System.in ) );

//getKeyboardReader, to get input from the user
public static final BufferedReader getKeyboardReader()
{
return STDIN;
}


//code to actually get stuff from commandline, "input" becomes what was entered
//produces an IOException if the user does something really funky

try
{
BufferedReader stdin = RobotGame.getKeyboardReader();
input = stdin.readLine();
}

//catches an IOException if created here
catch (IOException ioe) {}

 

[gopunk]

whoa that's hella annoying.... why didnt' they make it easier? 😕

 

[Kilrsat]

Originally posted by: gopunk
whoa that's hella annoying.... why didnt' they make it easier? 😕

Because with a few simple modifications on the code I posted, it can be used to read from a network source, a file on the drive, a telnet session 🙂

So while reading from the commandline might take a few extra steps, once you learn that, you're ready to tackle reading most anything.

 

[mchammer187]

Originally posted by: Kilrsat

Originally posted by: gopunk
whoa that's hella annoying.... why didnt' they make it easier? 😕

Because with a few simple modifications on the code I posted, it can be used to read from a network source, a file on the drive, a telnet session 🙂

So while reading from the commandline might take a few extra steps, once you learn that, you're ready to tackle reading most anything.

do you think you can post the easier way 😀 thanks for the help BTW

 

[Jzero]

So while reading from the commandline might take a few extra steps, once you learn that, you're ready to tackle reading most anything.

Exactly. It's frustratingly complicated to just grab input from a command line, but the same tactic makes so many other forms of I/O fairly simple and you can use one piece of code to do a whole lot.

 

[Jzero]

do you think you can post the easier way 😀 thanks for the help BTW

That IS the easier way 😉
In fact, I think it's about the only way. I mean, you can use other readers, but bufferedreader is the way to go for this.