main函数里Person pa1 = new Person("武大郎", 44); Person pa2 = new Person("西门大官人", 28); Person pa3 = new Person("金莲妹妹", 22); ArrayList al = new List();//把三个Person对象加入集合alal.add(p1);al.add(p2);al.add(p3);/*遍历al*/for(int i = 0;i<al.size() ; i++){System.out.println((Person)al.get(i));}
