notes on core java in java

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

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

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

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

An object’s finalize() method may only be invoked once by the garbage collector. In Java, there is no guarantee on when or how many times the finalize() method of an object will be invoked by the garbage collector. The finalize() method is called by the garbage collector before it reclaims the memory occupied by an object, but … Read more