Getting multiple values in Java via Scanner input

Question

I'm trying to figure out how to read multiple entries from the Scanner class in Java. I need to get the name of each person entered and then compare the total amounts to each entry.

Here is my code:

String[] salespersons = new String[3];

System.out.println("Please enter at least two salespeople but no more than four, to compare sales against: ");

// use scanner class to read input from the user
Scanner input = new Scanner(System.in);

String line = input.nextLine();

String[] values = line.split(",");

for (String s: values) {
    salespersons = values;
}

For some reasons, I can't get the values that are placed in salespersons. (I am really new to Java, sorry if my question does not make a lot of sense).

mk. · Accepted Answer · 2015-03-16 15:46:59Z

3

You can just write:

salespersons = line.split(",");

You don't need to assign it to an intermediary values variable, and then loop over it to assign it to salespersons. But if you did want to do that, you should use an indexed for loop:

for (int i = 0; i<Math.min(salespersons.length,values.length); i++) {
    salespersons[i] = values[i];
}

edited Mar 16, 2015 at 15:46

answered Mar 16, 2015 at 15:40

mk.

11.8k6 gold badges43 silver badges56 bronze badges

Sign up to request clarification or add additional context in comments.

5 Comments

Duncan Jones Over a year ago

Yup, and probably add a check to see if the length is OK. if (salespersons.length < 2 || salespersons.length > 4) { show error }.

user2101411 Over a year ago

Thanks, one more question though. How would I use the values outside the for statement, for instance, determining the length then using the correct indexes?

mk. Over a year ago

String sales1 = salespersons[0], and use a guard for 3-4 so you don't get IndexOutOfBounds String sales4 = salespersons.length>=4 ? salespersons[3] : null;, but I'd avoid hardcoding those - you might look for a way to get a collection of all pairs from an array.

user2101411 Over a year ago

How would I go about doing that? I'm sorry, I am really new to Java and don't know a lot about it..

mk. Over a year ago

You mean the pairs solution? It would be best to ask a new question, after seeing if you can find it on your own (maybe stackoverflow.com/q/2392652/154066 ?) - it's hard to provide a good answer in comments.

SubChord · Accepted Answer · 2015-03-16 15:43:28Z

0

When you work with arrays and you want to access them by their index value then you can't make use of enhanced for loops.

The way you want to work is:

    String[] salespersons = new String[3];

    ...

    for (int i = 0; i < values.size(); i++){
        salespersons[i] = values[i];
    }

answered Mar 16, 2015 at 15:43

SubChord

1,4541 gold badge10 silver badges14 bronze badges

Collectives™ on Stack Overflow

Getting multiple values in Java via Scanner input

2 Answers 2

5 Comments

Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

5 Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related