java.util.scanner - Read a character followed by n number of integers like A 1 2 3 using Java's Scanner(System.in) object from the same line -


i unable read 1 2 3 same line, 1 2 3 can read 1 line because of in start, scanner reads a.

string command = ""; int numbers; list<integer> ints = new arraylist<integer>(); scanner scan = new scanner(system.in); command = scan.next();  while (scan.hasnextint()) {     numbers = scan.nextint();     ints.add(numbers);  } scan.close();

i use nextline() (and hasnextline()), split on 1 or more consecutive white-space characters (to create array of tokens), set command first token , stream tokens - skip first 1 (it's command) , collect list. like,

scanner scan = new scanner(system.in); while (scan.hasnextline()) {     string line = scan.nextline();     string[] tokens = line.split("\\s+");     string command = tokens[0];     list<integer> ints = stream.of(tokens).skip(1)             .maptoint(integer::parseint).boxed().collect(collectors.tolist());     system.out.printf("command = %s, ints = %s%n", command, ints.tostring()); }

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