在foreach嵌套循環中使用==和equals的問題

JSONArray ja1= new JSONArray();
        JSONArray ja2 = new JSONArray();
        JSONObject jo1 = new JSONObject();
        JSONObject jo2 = new JSONObject();

        for(Person p:person){
            jo1.put("id",p.getId());
            jo1.put("name",p.getName());
            jo1.put(
 
"code",p.getCode());
            jo1.put("cardid",p.getCardid());
            jo1.put("sex",p.getSex());
            jo1.put("birthday",p.getBirthday());
            jo1.put("phone",p.getPhone());
            jo1.put("corp_code",p.getCorp_code());
            jo1.put("dept_code",p.getDept_code());
            String pk1 
 
= p.getPk_psndoc();

            List<BankCard> bankCard = p.getBc();
            for(BankCard c:bankCard){
                String pk2 = c.getPk_psndoc();
                if(pk2.equals(pk1)){
                    jo2.put("name",c.getName());
                    jo2.put("code",c.getCode());
                    jo2.put(
 
"bank",c.getBank());
                    jo2.put("cardtype",c.getCardtype());
                    jo2.put("id",c.getPk_bankcard());
                    ja2.add(jo2);

                }
            }

            jo1.put("bodybank_card",ja2);
            ja1.add(jo1);
            ja2.clear();

        }

在嵌套的內循環中用equals比較，，，，，

foreach嵌套遍歷循環的問題