What is instance variable in Java example? Instance variables are created when an object is created with the use of the keyword ‘new’ and destroyed when the object is destroyed. Instance variables hold values that must be referenced by more than one method, constructor or block, or essential parts of an object’s state that must…
What is set in Java? A Set is a Collection that cannot contain duplicate elements. It models the mathematical set abstraction. Two Set instances are equal if they contain the same elements. The Java platform contains three general-purpose Set implementations: HashSet, TreeSet, and LinkedHashSet. How do sets work in Java? Set achieves the uniqueness in…
How do you write an applet? In the middle of the applet is a button labeled “Launch!”, and at the bottom of the applet is a text area for the applet to write messages to the user. You can try interacting with the applet a little bit by typing some numbers into the box and…
How do you do math random in Java? How to use the Math. random () method in Java import java. lang. Math; //importing Math class in Java. class MyClass { public static void main(String args[]) { double rand = Math. random (); // generating random number. System. out. } What is the use of…
What is API in Java with example? An API can be described as a way to enable computers to possess a common interface, to allow them to communicate with each other. Java Application Programming Interface ( API ) is the area of Java development kit (JDK). An API includes classes, interfaces, packages and also their…