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[randy]Chapter 9. API & Swagger & Annotation #38
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너무 수고많으셨습니다!
changeDog(cat); // Cat 객체를 Dog 객체로서 억지로 변환시도 | ||
} | ||
public static void changeDog(Animal animal) { | ||
Dog dog = (Dog) animal; // ClassCastException 발생 가능 |
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예시가 있으니까 더 이해가 잘 되네용!!!
3. 결과 만들기 : 최종적으로 결과를 만들어냄 | ||
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- 간단한 순서 예시 : 전체 -> 맵핑 -> 필터링 1 -> 결과 만들기 -> 결과물 | ||
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순서정리까지!! 감사합니다!
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고생하셨습니다!!
**3. NumberFormatException** | ||
- 숫자로 변환할 될 수 없는 문자열 데이터를 숫자로 변경할 경우 발생 | ||
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**4. ClassCastException** |
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한번도 본적없는 예외인데 예시코드까지 짜주셔서 이해하기 편하네요!
.build(); // [a, b, c] | ||
``` | ||
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### ✅ 가공 하기(중간 연산) |
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stream의 여러가지 연산들에 대해 알려주셔서 좋습니다ㅎㅎ
#️⃣ 연관된 이슈
#31
✅ 워크북 체크리스트
✅ 컨벤션 체크리스트
📌 주안점