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Which of the following are valid objects of class Integer or one of its subclasses? 1) -123 2) 0xFF 3) 123_456_789 4) 123456789123456789123456789123456789

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Which of the following are valid objects of class Integer or one of its subclasses? 1) -123 2) 0xFF 3) 123_456_789 4) 123456789123456789123456789123456789






 
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