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Java Fundamentals: Types, Control Flow, and Classes

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HashMap is thread-safe whereas Hashtable is not10, Which of the following assignment statements is invalid?

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A
int I = L;
💡 Explanation:

Java requires explicit casting when assigning a larger type (like long or double) to a smaller type (like int) because of potential data loss. Assigning a long to an int directly (Option C) is a compile-time error without a cast. Option D is valid because it uses an explicit cast.

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