Wrapper Class인 Integer이거저거 만져보다가 질문드립니다.

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먼저 제가 아는 byte의 범위는 -128~127로 알고 있습니다. 그때문에 byte변수에는 해당범위의 데이터만이 들어가는걸로 알고 있습니다.아래의 테스트를 진행하던중 의문점이 생겨서 질문 드립니다.&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;Integer obj &#61; new Integer(255); byte a &#61; obj.byteValue(); System.out.println(a);&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61; -1&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;어... 127넘었는데 왜 에러가 안나지?Integer클래스를 보자&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61; /** * Returns the value of this {&#64;code Integer} as a {&#64;code byte} * after a narrowing primitive conversion. * &#64;jls 5.1.3 Narrowing Primitive Conversions */ public byte byteValue() { return (byte)value; }&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61;&#61; 확인 해 보니 형변환을 해주면 해결이 되는걸로 확인했습니다.그러나 형변환을 했을때 어떤 방식으로 돌아가는지를 보고싶은데 어디서 봐야할지 감이 잡히질 않습니다.혹 직접 해당 형변환이 이루어 질때 어떤방식으로 변환이 이루어지는지 직접 코드를 보려면 어디서 봐야하는지알려주시면 감사하겠습니다.

Wrapper Class인 Integer이거저거 만져보다가 질문드립니다.

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#wrapper 목록