?? booksimpl.java
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package com.bookstore.data;public class BooksImpl implements Book { public int getId() { // TODO Auto-generated method stub return 0; } public String getNotes() { // TODO Auto-generated method stub return null; } public double getPrice() { // TODO Auto-generated method stub return 0; } public String getTitle() { // TODO Auto-generated method stub return null; } public String getType() { // TODO Auto-generated method stub return null; }}?? 快捷鍵說明
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