how to split input into multiple variables?
I am very new to Java, apologies if this is a newbie question.
I want to ask the user to enter 3 numbers (console input), all at once, space delimited, and insert them into three different variables. I am wanting to know how to accomplish this with SDK 1.4.2. With SDK 1.5 you can do:
Scanner scan = Scanner.create (System.in)
System.out.print("Enter three numbers: ");
num1 = scan.nextInt();
num2 = scan.nextInt();
num3 = scan.nextInt();
Thanks for any help, appreciate it.
Brian
[url http://java.sun.com/j2se/1.4.2/docs/api/java/lang/String.html#split(java.lang.String)]String.split[/url][url http://java.sun.com/j2se/1.4.2/docs/api/java/util/StringTokenizer.html]StringTokenizer[/url]Either of the above will do.
jverd at 2007-7-5 21:33:07 >
Thanks,
I did look into String.split and implemented it using that like so:
BufferedReader stdin = new BufferedReader(new InputStreamReader(System.in));
try {
System.out.print("Enter three integers: ");
result = stdin.readLine().split("\\s");
stra = result[0];
num1 = Integer.parseInt(stra);
strb = result[1];
num2 = Integer.parseInt(strb);
strc = result[2];
num3 = Integer.parseInt(strc);
}
> Thanks,
>
> I did look into String.split and implemented it using
> that like so:
>
> BufferedReader stdin = new BufferedReader(new
> InputStreamReader(System.in));
>
> try {
> System.out.print("Enter three integers: ");
> result = stdin.readLine().split("\\s");
> stra = result[0];
> num1 = Integer.parseInt(stra);
> strb = result[1];
> num2 = Integer.parseInt(strb);
> strc = result[2];
> num3 = Integer.parseInt(strc);
> }
what was the end result when you tried to do it this way?
The end result was that it worked fine. Complete program is as follows (an adaptation of a lesson from Java Software Solutions, Lewis and Loftus, ISBN 0-321-24583-0):
import java.io.*;
public class MinOfThree {
// read three integers from the user and determines the smallest value.
public static void main (String args[]) {
int num1 = 0, num2 = 0, num3 = 0, min = 0;
String stra, strb, strc;
String[] result;
BufferedReader stdin = new BufferedReader(new InputStreamReader(System.in));
try {
System.out.print("Enter three integers: ");
result = stdin.readLine().split("\\s");
stra = result[0];
num1 = Integer.parseInt(stra);
strb = result[1];
num2 = Integer.parseInt(strb);
strc = result[2];
num3 = Integer.parseInt(strc);
}
catch (Exception exc) {
System.out.println("Invalid Input");
System.exit(1);
}
if (num1 < num2)
if (num1 < num3)
min = num1;
else
min = num3;
else
if (num2 < num3)
min = num2;
else
min = num3;
System.out.println("Minimum value: " + min);
}
}
Then I am confused as to what the question is. Can you clarify please?
lucky,
When jverd told me about the String.split, I used that, and it worked. I think we just have a miscommunication. Originally, when I posted the question, I was not aware of how to accomplish this. After I posted, I was able to accomplish it using String.split, and now all is well.
Brian
Oh dear me! I am sorry, I thought you wanted to do it a different way or something! LOL
> lucky,
>
> When jverd told me about the String.split, I used
> that, and it worked. I think we just have a
> miscommunication. Originally, when I posted the
> question, I was not aware of how to accomplish this.
> After I posted, I was able to accomplish it using
> String.split, and now all is well.
>
> Brian
Cool. Glad you got it working.
jverd at 2007-7-5 21:33:07 >
