标签：
组合模式
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/**
* 为组合中所有对象定义一个接口，不管是组合还是节点
* */
public abstract class Component {
public void add(Component component) {
new UnsupportedOperationException();
}
public void remove(Component component) {
new UnsupportedOperationException();
}
public String getName() {
return null;
}
public void foreach(){
new UnsupportedOperationException();
}
}
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/**
* 子节点
* */
public class Leaf extends Component{
String name;
public Leaf(String name) {
this.name = name;
}
@Override
public void add(Component component) {
System.out.println("不存在子节点，无法添加。。。");
}
@Override
public void remove(Component component) {
new UnsupportedOperationException();
}
@Override
public String getName() {
return name;
}
}
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/**
* 组合类
* */
public class Composite extends Component{
String name;
private List<Component> child = new ArrayList<Component>();
public Composite(String name) {
this.name = name;
}
@Override
public void add(Component component) {
child.add(component);
}
@Override
public void remove(Component component) {
child.remove(component);
}
@Override
public void foreach(){
for(Component component : child) {
System.out.println(component.getName());
}
}
@Override
public String getName() {
return name;
}
}
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public class Client {
public static void main(String[] args) {
Component component = new Composite("根节点");
Component child = new Composite("一级子节点child");
Component child_1 = new Leaf("一级子节点child之子节点一");
Component child_2 = new Leaf("一级子节点child之子节点二");
child.add(child_1);
child.add(child_2);
Component child2 = new Composite("一级子节点child2");
component.add(child);
component.add(child2);
component.foreach();
}
}
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标签：
原文地址：http://www.cnblogs.com/LeslieXia/p/5494896.html
