Cannot enter input in multiple lines via command line for feeding Java code

Question

I want to enter something like this on the command line as an input and process it in the Java code

21 4 -2 31 23 0 10 28 -6 19
1
5
20
8
0

But as soon as I push Enter the program starts executing and I cannot enter the next line.

How can I do it?

Answer 1

You can't process multi-line command line input. There can only be one.

If you want multiple lines, you'll have to read them in using a Scanner and parsing each one. You'll also need a condition to tell the program when you've entered the last line. You should do this in a while loop.

Answer 2

You could have something like "\n" when you write on the command line. Then program Java to process that as a new line accordingly.

For example, if you wanted the following.

a b c
1
2
3

You could enter the following.

a b c\n 1\n 2\n 3