java 16 interview questions and answers

TextField and TextArea. In Core Java, the TextComponent class is part of the Abstract Window Toolkit (AWT) and is used for handling text input. Two subclasses of the TextComponent class are: TextField: This class provides a single-line text input field. TextArea: This class provides a multi-line text input area. Both TextField and TextArea are used to accept … Read more

The start() method of the Thread class is invoked to cause an object to begin executing as a separate thread. In Core Java, the method that is invoked to cause an object to begin executing as a separate thread is the start() method. The start() method is defined in the Thread class, and when called on an instance of … Read more

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

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