What must a class do to implement an interface

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It must provide all of the methods in the interface and identify the interface in its implements clause. In Java, to implement an interface, a class must do the following: Use the implements keyword: In the class declaration, use the implements keyword followed by the name of the interface that you want the class to … Read more

Can a double value be cast to a byte

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Yes, a double value can be cast to a byte. Yes, you can cast a double value to a byte in Java, but it involves a narrowing conversion, and you may lose precision or encounter unexpected results. Here’s an example: java public class Main { public static void main(String[] args) { double doubleValue = 123.45; byte byteValue = … Read more

Which Java operator is right associative?

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The = operator is right associative. In Core Java, none of the operators are right-associative. All Java operators are left-associative, which means that they are evaluated from left to right when they have the same precedence. Right-associative operators would be evaluated from right to left, but Java does not have such operators. In Core Java, the assignment … Read more

What is the argument type of a program’s main() method

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A program’s main() method takes an argument of the String[] type. In Core Java, the correct answer is: The argument type of a program’s main() method is an array of strings (String[]). The main() method is the entry point of a Java program, and it accepts an array of strings as its parameter. This array, commonly named args, contains … Read more

What is the purpose of the finally clause of a try-catch-finally statement

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The finally clause is used to provide the capability to execute code no matter whether or not an exception is thrown or caught. The purpose of the finally clause in a try-catch-finally statement in Java is to define a block of code that will be executed whether an exception is thrown or not. This block … Read more