Mastering Java: The Ultimate 2025 All-In-One Quiz to Excel in 'Thinking in Java

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How can the contents of an object in Java be directly compared for equality?

Using the == operator

Using the equals() method

The equals() method is used to compare the contents of two objects in Java. While the == operator can also be used for this purpose, it only checks if the two objects are referring to the same memory location. This means that two objects could have the same contents but be stored in different memory locations, resulting in the == operator returning false. The toString() method is used to convert an object to a String representation and the hashCode() method is used to generate a unique integer representation of an object, neither of which are useful for directly comparing the contents of two objects. Therefore, option B, using the equals() method, is the correct choice for comparing the contents of an object in Java for equality.

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Using the toString() method

Using the hashCode() method

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