那位兄台指点下这段实现什么功能 ?谢谢!private HashMap getKihonJoho(ArrayList list){
HashMap hashMap = new HashMap();
for(int i = 0; i<list.size(); i++){
J2Bean bean = (J2Bean) list.get ;
ArrayList value = (ArrayList)hashMap.get(bean.getKaisya_cod());
if(value == null){
value = new ArrayList();
hashMap.put(bean.getKaisya_cod(), value)
}
value.add(bean);
}
return hashMap;
}
HashMap hashMap = new HashMap();
for(int i = 0; i<list.size(); i++){
J2Bean bean = (J2Bean) list.get ;
ArrayList value = (ArrayList)hashMap.get(bean.getKaisya_cod());
if(value == null){
value = new ArrayList();
hashMap.put(bean.getKaisya_cod(), value)
}
value.add(bean);
}
return hashMap;
}
HashMap hashMap = new HashMap();
for(int i = 0; i<list.size(); i++){ //对List进行循环
J2Bean bean = (J2Bean) list.get(i) ; //得到每个bean
ArrayList value = (ArrayList)hashMap.get(bean.getKaisya_cod()); //根cod查询是不是已经存在
if(value == null){ //不存在
value = new ArrayList(); //新建
hashMap.put(bean.getKaisya_cod(), value) //以cod为key把value插入map
}
value.add(bean);
}
return hashMap;
}