import java.util.NoSuchElementException;
public class InputIterator implements Iterable<String> {
- private BufferedReader in;
- private final PrintStream out;
- private final String prompt, instructions;
-
- public InputIterator(BufferedReader in, PrintStream out, String prompt, String instructions) {
- this.in = in;
- this.out = out;
- this.prompt = prompt;
- this.instructions = instructions;
- }
-
- @Override
- public Iterator<String> iterator() {
- out.println(instructions);
- return new Iterator<String>() {
- String input;
- @Override
- public boolean hasNext() {
- out.append(prompt);
- try {
- input = in.readLine();
- } catch (IOException e) {
- input = null;
- return false;
- }
- return input.length()>0;
- }
+ private BufferedReader in;
+ private final PrintStream out;
+ private final String prompt, instructions;
+
+ public InputIterator(BufferedReader in, PrintStream out, String prompt, String instructions) {
+ this.in = in;
+ this.out = out;
+ this.prompt = prompt;
+ this.instructions = instructions;
+ }
+
+ @Override
+ public Iterator<String> iterator() {
+ out.println(instructions);
+ return new Iterator<String>() {
+ String input;
+ @Override
+ public boolean hasNext() {
+ out.append(prompt);
+ try {
+ input = in.readLine();
+ } catch (IOException e) {
+ input = null;
+ return false;
+ }
+ return input.length()>0;
+ }
- @Override
- public String next() {
- if(!hasNext()) {
- throw new NoSuchElementException();
- }
- return input;
- }
+ @Override
+ public String next() {
+ if(!hasNext()) {
+ throw new NoSuchElementException();
+ }
+ return input;
+ }
- @Override
- public void remove() {
- }
- };
- }
+ @Override
+ public void remove() {
+ }
+ };
+ }
}