package TodoListApp; // 待办事项类 class TodoItem { private int id; private String description; private boolean isCompleted; public TodoItem(int id, String description) { this.id = id; this.description = description; this.isCompleted = false; } // Getter方法 public int getId() { return id; } public boolean isCompleted() { return isCompleted; } public void setCompleted(boolean completed) { isCompleted = completed; } public String getDescription() { return description; } // 显示待办事项信息 @Override public String toString() { String status = isCompleted? "[已完成]" : "[未完成]"; return String.format("[%d] %s %s", id,status, description); } }