初级
for (Employee employee : list) {


}

怎么比较两个employee的id~

[解决办法]

Java code

        for (int i = 0; i < list.size(); i++) {            Employee e1 = (Employee) list.get(i);            for (int j = i + 1; j < list.size(); j++) {                Employee e2 = (Employee) list.get(j);                // 数值型                if (e1.id == e2.id) {                    // TODO                }                // 非数值型                if (e1.id.equals(e2.id)) {                    // TODO                }            }        }