ex7_45.txt

来自「j2ee core design patterns」· 文本 代码 · 共 32 行

Example 7.45 ValueList implementation: ProjectsValueList

package com.corej2eepatterns.vlh;

// imports

public class ProjectsList extends ArrayList {
    ...

    // implement iterator() to return your custom iterator,
    // if any
    public Iterator iterator() {
        return new ProjectsListIterator(this);
    }

    // implement iterator() to return your custom iterator,
    // if any
    public ListIterator listIterator() {
        return new ProjectsListIterator(this);
    }

    public List subList(int fromIndex, int toIndex) {
        ProjectsList subList = new ProjectsList();
        for (int index=fromIndex; index<toIndex; index++) {
            subList.add(this.get(index));
        }
        return subList;
    }

...
}