1.Combinatorial pattern
A group of similar objects is combined according to a tree structure, and then a unified method is provided to access the corresponding objects, thus ignoring the differences between objects and object sets.
2.Example
public interface Workfile {
public abstract void KillVirus();
}
public class Floder implements Workfile {
@Override
public void KillVirus() {
}
}
class ImageFloder implements Workfile {
@Override
public void KillVirus() {
}
}
public class CompositeHandler {
private ArrayList<Workfile> f1 = new ArrayList<>();
public void add(Workfile f) {
f1.add(f);
}
public ArrayList<Workfile> getF1() {
return f1;
}
public void killVirus() {
for (Workfile workfile : f1) {
workfile.KillVirus();
}
}
}
public class Client {
public static void main(String[] args) {
Floder f2 = new Floder();
ImageFloder f3 = new ImageFloder();
CompositeHandler ch = new CompositeHandler();
ArrayList<Workfile> f1 = ch.getF1();
f1.add(f2);
f1.add(f3);
ch.killVirus();
}
}