구현체로 만들기때문에 추상클래스로 쓰신다하셨는데
추상클래스안썼을때랑 썻을때랑 차이가 어떻게 다른건가요??
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<span style="font-size: 12pt; font-family: Arial; text-align: right;" data-sheets-value="{&quot;1&quot;:2,&quot;2&quot;:&quot;안녕하세요. 님, 공식 서포터즈 OMG입니다.\n\n감사합니다.&quot;}" data-sheets-userformat="{&quot;2&quot;:1063747,&quot;3&quot;:{&quot;1&quot;:0},&quot;4&quot;:{&quot;1&quot;:2,&quot;2&quot;:16777215},&quot;9&quot;:2,&quot;11&quot;:0,&quot;12&quot;:0,&quot;14&quot;:{&quot;1&quot;:2,&quot;2&quot;:0},&quot;15&quot;:&quot;Arial&quot;,&quot;16&quot;:12,&quot;23&quot;:1}" data-sheets-textstyleruns="{&quot;1&quot;:0}{&quot;1&quot;:10,&quot;2&quot;:{&quot;2&quot;:{&quot;1&quot;:2,&quot;2&quot;:1136076},&quot;9&quot;:1}}{&quot;1&quot;:17}" data-sheets-hyperlinkruns="{&quot;1&quot;:10,&quot;2&quot;:&quot;https://www.inflearn.com/blogs/617&quot;}{&quot;1&quot;:17}">안녕하세요.&nbsp;<span style="background-color: #ffffff; color: #495057; font-family: Pretendard, -apple-system, 'system-ui', system-ui, Roboto, 'Helvetica Neue', 'Segoe UI', 'Apple SD Gothic Neo', 'Noto Sans KR', 'Malgun Gothic', 'Apple Color Emoji', 'Segoe UI Emoji', 'Segoe UI Symbol', sans-serif; font-size: 14px;">Dong님, <a class="in-cell-link" href="https://www.inflearn.com/blogs/617" target="_blank" rel="noopener">공식 서포터즈</a> OMG입니다.
<span style="font-size: 12pt; font-family: Arial; text-align: right;" data-sheets-value="{&quot;1&quot;:2,&quot;2&quot;:&quot;안녕하세요. 님, 공식 서포터즈 OMG입니다.\n\n감사합니다.&quot;}" data-sheets-userformat="{&quot;2&quot;:1063747,&quot;3&quot;:{&quot;1&quot;:0},&quot;4&quot;:{&quot;1&quot;:2,&quot;2&quot;:16777215},&quot;9&quot;:2,&quot;11&quot;:0,&quot;12&quot;:0,&quot;14&quot;:{&quot;1&quot;:2,&quot;2&quot;:0},&quot;15&quot;:&quot;Arial&quot;,&quot;16&quot;:12,&quot;23&quot;:1}" data-sheets-textstyleruns="{&quot;1&quot;:0}{&quot;1&quot;:10,&quot;2&quot;:{&quot;2&quot;:{&quot;1&quot;:2,&quot;2&quot;:1136076},&quot;9&quot;:1}}{&quot;1&quot;:17}" data-sheets-hyperlinkruns="{&quot;1&quot;:10,&quot;2&quot;:&quot;https://www.inflearn.com/blogs/617&quot;}{&quot;1&quot;:17}">추상클래스에 대해 잘 정리된 글 링크 첨부합니다.
<span style="font-size: 12pt; font-family: Arial; text-align: right;" data-sheets-value="{&quot;1&quot;:2,&quot;2&quot;:&quot;안녕하세요. 님, 공식 서포터즈 OMG입니다.\n\n감사합니다.&quot;}" data-sheets-userformat="{&quot;2&quot;:1063747,&quot;3&quot;:{&quot;1&quot;:0},&quot;4&quot;:{&quot;1&quot;:2,&quot;2&quot;:16777215},&quot;9&quot;:2,&quot;11&quot;:0,&quot;12&quot;:0,&quot;14&quot;:{&quot;1&quot;:2,&quot;2&quot;:0},&quot;15&quot;:&quot;Arial&quot;,&quot;16&quot;:12,&quot;23&quot;:1}" data-sheets-textstyleruns="{&quot;1&quot;:0}{&quot;1&quot;:10,&quot;2&quot;:{&quot;2&quot;:{&quot;1&quot;:2,&quot;2&quot;:1136076},&quot;9&quot;:1}}{&quot;1&quot;:17}" data-sheets-hyperlinkruns="{&quot;1&quot;:10,&quot;2&quot;:&quot;https://www.inflearn.com/blogs/617&quot;}{&quot;1&quot;:17}">참고해주세요 :)
<span style="text-align: right;" data-sheets-value="{&quot;1&quot;:2,&quot;2&quot;:&quot;안녕하세요. 님, 공식 서포터즈 OMG입니다.\n\n감사합니다.&quot;}" data-sheets-userformat="{&quot;2&quot;:1063747,&quot;3&quot;:{&quot;1&quot;:0},&quot;4&quot;:{&quot;1&quot;:2,&quot;2&quot;:16777215},&quot;9&quot;:2,&quot;11&quot;:0,&quot;12&quot;:0,&quot;14&quot;:{&quot;1&quot;:2,&quot;2&quot;:0},&quot;15&quot;:&quot;Arial&quot;,&quot;16&quot;:12,&quot;23&quot;:1}" data-sheets-textstyleruns="{&quot;1&quot;:0}{&quot;1&quot;:10,&quot;2&quot;:{&quot;2&quot;:{&quot;1&quot;:2,&quot;2&quot;:1136076},&quot;9&quot;:1}}{&quot;1&quot;:17}" data-sheets-hyperlinkruns="{&quot;1&quot;:10,&quot;2&quot;:&quot;https://www.inflearn.com/blogs/617&quot;}{&quot;1&quot;:17}"><a href="https://velog.io/@gillog/Java-Abstract-Class%EC%B6%94%EC%83%81-%ED%81%B4%EB%9E%98%EC%8A%A4">https://velog.io/@gillog/Java-Abstract-Class%EC%B6%94%EC%83%81-%ED%81%B4%EB%9E%98%EC%8A%A4</a>
<span style="font-size: 12pt; font-family: Arial; text-align: right;" data-sheets-value="{&quot;1&quot;:2,&quot;2&quot;:&quot;안녕하세요. 님, 공식 서포터즈 OMG입니다.\n\n감사합니다.&quot;}" data-sheets-userformat="{&quot;2&quot;:1063747,&quot;3&quot;:{&quot;1&quot;:0},&quot;4&quot;:{&quot;1&quot;:2,&quot;2&quot;:16777215},&quot;9&quot;:2,&quot;11&quot;:0,&quot;12&quot;:0,&quot;14&quot;:{&quot;1&quot;:2,&quot;2&quot;:0},&quot;15&quot;:&quot;Arial&quot;,&quot;16&quot;:12,&quot;23&quot;:1}" data-sheets-textstyleruns="{&quot;1&quot;:0}{&quot;1&quot;:10,&quot;2&quot;:{&quot;2&quot;:{&quot;1&quot;:2,&quot;2&quot;:1136076},&quot;9&quot;:1}}{&quot;1&quot;:17}" data-sheets-hyperlinkruns="{&quot;1&quot;:10,&quot;2&quot;:&quot;https://www.inflearn.com/blogs/617&quot;}{&quot;1&quot;:17}"> 감사합니다.

인프런 커뮤니티 질문&답변

item클래스만 추상클래스로 사용하는 이유