java ArrayList集合的应用

package org.hwh.jiHe2; import java.util.*; public class Add { private ArrayList<Student> array; //构造方法实例化array public Add() { array=new ArrayList<Student>(); } //向array中添加Student的对象 public void add(Student stu) { array.add(stu); } //从array中移除指定姓名的Student对象 public void remove(String name) { Iterator<Student> iter = array.iterator(); while(iter.hasNext()) { if(iter.next().getName().equals(name)) { iter.remove(); System.out.println("正在删除..."); try { Thread.sleep(1000); } catch (InterruptedException e) { e.printStackTrace(); } System.out.println("删除成功!"); break; } else { System.out.println("正在匹配下一个人..."); try { Thread.sleep(1000); } catch (InterruptedException e) { e.printStackTrace(); } } } } //把array中的数据转成Student的数组,用Arrays.sort()排序后输出(排序的前提是Student类中实现了Comparable<T>接口) public void showAll() { Student[] st=array.toArray(new Student[]{}); Arrays.sort(st); for(Student stu:st) { System.out.println(stu); } } }