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ohjongsung/BoxUse.java

Created March 31, 2018 08:40
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BoxUse.java
AppleBox appleBox = new AppleBox();
appleBox.store(new Melon()); // 컴파일오류발생
MelonBox melonBox = new MelonBox():
melonBox.store(new Apple()); // 컴파일오류발생
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