public boolean addCourse(String id,String name){ boolean iss = true; for(Course cour:course){ if(cour.getId().equals(id)){ System.out.println("请输入"+(course.size()+1)+"后的id!!"); iss = false; return true; } } if(!(iss)){ Course cou = new Course(id,name); course.add(cou); return false; } }
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