55 lines
1.7 KiB
Java
55 lines
1.7 KiB
Java
// collections/MultiIterableClass.java
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// (c)2021 MindView LLC: see Copyright.txt
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// We make no guarantees that this code is fit for any purpose.
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// Visit http://OnJava8.com for more book information.
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// Adding several Adapter Methods
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import java.util.*;
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public class MultiIterableClass extends IterableClass {
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public Iterable<String> reversed() {
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return new Iterable<String>() {
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public Iterator<String> iterator() {
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return new Iterator<String>() {
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int current = words.length - 1;
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@Override public boolean hasNext() {
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return current > -1;
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}
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@Override public String next() {
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return words[current--];
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}
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@Override
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public void remove() { // Not implemented
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throw new UnsupportedOperationException();
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}
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};
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}
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};
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}
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public Iterable<String> randomized() {
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return new Iterable<String>() {
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public Iterator<String> iterator() {
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List<String> shuffled =
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new ArrayList<>(Arrays.asList(words));
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Collections.shuffle(shuffled, new Random(47));
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return shuffled.iterator();
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}
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};
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}
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public static void main(String[] args) {
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MultiIterableClass mic = new MultiIterableClass();
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for(String s : mic.reversed())
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System.out.print(s + " ");
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System.out.println();
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for(String s : mic.randomized())
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System.out.print(s + " ");
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System.out.println();
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for(String s : mic)
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System.out.print(s + " ");
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}
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}
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/* Output:
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banana-shaped. be to Earth the know we how is that And
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is banana-shaped. Earth that how the be And we know to
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And that is how we know the Earth to be banana-shaped.
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*/
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