java wait for user input
public class ScannerTest {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
try {
while (true) {
System.out.println("Please input a line");
long then = System.currentTimeMillis();
String line = scanner.nextLine();
long now = System.currentTimeMillis();
System.out.printf("Waited %.3fs for user input%n", (now - then) / 1000d);
System.out.printf("User input was: %s%n", line);
}
} catch(IllegalStateException | NoSuchElementException e) {
// System.in has been closed
System.out.println("System.in was closed; exiting");
}
}
}