❌ A. Max Integer: 4 Max Double: 3.3 ❌ B. Max Integer: 2 Max Double: 2.2 ❌ C. Max Integer: 1 Max Double: 1.1 ✅ D. Compilation error ❌ E. Runtime error
Explanation: 1. Method Overloading with Generics: • There are two overloaded findMax methods, one using extends Number and the other using extends Comparable<T>. • findMax(List<T extends Number>): Compares Number values using doubleValue() for comparison. • findMax(List<T extends Comparable<T>>): Compares values using the compareTo method, which is available for all classes implementing Comparable.
2. Type Inference and Ambiguity: • When the findMax method is called with List<Integer> or List<Double>, Java tries to infer which method to use. • Both Integer and Double implement Comparable<T>, so both methods are applicable. • This results in a method ambiguity error because Java cannot decide whether to use doubleValue() or compareTo() to compare the elements.
3. Compilation Error: • The ambiguity occurs because the Comparable interface is implemented by both Integer and Double, which causes the compiler to be unable to choose between the two overloaded methods.
❌ A. Max Integer: 4 Max Double: 3.3 ❌ B. Max Integer: 2 Max Double: 2.2 ❌ C. Max Integer: 1 Max Double: 1.1 ✅ D. Compilation error ❌ E. Runtime error
Explanation: 1. Method Overloading with Generics: • There are two overloaded findMax methods, one using extends Number and the other using extends Comparable<T>. • findMax(List<T extends Number>): Compares Number values using doubleValue() for comparison. • findMax(List<T extends Comparable<T>>): Compares values using the compareTo method, which is available for all classes implementing Comparable.
2. Type Inference and Ambiguity: • When the findMax method is called with List<Integer> or List<Double>, Java tries to infer which method to use. • Both Integer and Double implement Comparable<T>, so both methods are applicable. • This results in a method ambiguity error because Java cannot decide whether to use doubleValue() or compareTo() to compare the elements.
3. Compilation Error: • The ambiguity occurs because the Comparable interface is implemented by both Integer and Double, which causes the compiler to be unable to choose between the two overloaded methods.
Correct answer: D
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There are multiple ways you can search for Telegram channels. One of the methods is really logical and you should all know it by now. We’re talking about using Telegram’s native search option. Make sure to download Telegram from the official website or update it to the latest version, using this link. Once you’ve installed Telegram, you can simply open the app and use the search bar. Tap on the magnifier icon and search for a channel that might interest you (e.g. Marvel comics). Even though this is the easiest method for searching Telegram channels, it isn’t the best one. This method is limited because it shows you only a couple of results per search.
How to Use Bitcoin?
n the U.S. people generally use Bitcoin as an alternative investment, helping diversify a portfolio apart from stocks and bonds. You can also use Bitcoin to make purchases, but the number of vendors that accept the cryptocurrency is still limited. Big companies that accept Bitcoin include Overstock, AT&T and Twitch. You may also find that some small local retailers or certain websites take Bitcoin, but you’ll have to do some digging. That said, PayPal has announced that it will enable cryptocurrency as a funding source for purchases this year, financing purchases by automatically converting crypto holdings to fiat currency for users. “They have 346 million users and they’re connected to 26 million merchants,” says Spencer Montgomery, founder of Uinta Crypto Consulting. “It’s huge.”
