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import java.util.ArrayList;
import java.util.Iterator;
interface Movable {
void operation();
}
class File implements Movable {
private String name;
public File(String name) {
this.name = name;
}
public String toString() {
return name;
}
public void operation() {
System.out.println(this);
}
}
class FileTree extends ArrayList<Movable> implements Movable {
private String name;
public FileTree(String name) {
this.name = name;
}
public String toString() {
return name;
}
public void operation() {
System.out.println(this);
for (Iterator<Movable> it = iterator(); it.hasNext();)
it.next().operation();
}
}
public class CompositeStructure {
public static void main(String args[]) {
FileTree root = new FileTree("root");
root.add(new File("Leaf1"));
FileTree c2 = new FileTree("Node1");
c2.add(new File("Leaf2"));
c2.add(new File("Leaf3"));
root.add(c2);
c2 = new FileTree("Node2");
c2.add(new File("Leaf4"));
c2.add(new File("Leaf5"));
root.add(c2);
root.operation();
}
}
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