private Comparator<Role> roleComparator = new Comparator<Role>() { public int compare(Role r1, Role r2) { return r1.getCode().compareTo(r2.getCode()); } }; //调用方法: Set<Role> results = new TreeSet<Role>(this.roleComparator); Iterator<Role> it = this.entity.getRoles().iterator(); while (it.hasNext()) { Role role = (Role) it.next(); results.add(role); } //或者: Set<Role> roles = new TreeSet<Role>(this.roleComparator); roles.addAll(selectAiUserRole.getRoles());
List集合去除重复
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转载自fengzhaoyang.iteye.com/blog/2261295
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