How do I implement a factory pattern and creational pattern in java ? Illustrate with an example

Provide an example of method overriding in Python, and discuss how it facilitates polymorphism.

Create the UML Diagram for this java code import java.util.Scanner; interface Positive{ void Number();} class Square implements Positive{ public void Number() { Scanner in=new Scanner(System.in); System.out.println("Enter a number: "); int a = in.nextInt(); if(a>0) { System.out.println("Positive number"); } else { System.out.println("Negative number"); } System.out.println("\nThe square of " + a +" is " + a*a); System.out.println("\nThe cubic of "+ a + " is "+ a*a*a); }} class Sum implements Positive{ public void Number() { Scanner in = new Scanner(System.in); System.out.println("\nEnter the value for a: "); int a = in.nextInt(); System.out.println("Enter the value for b" ); int b= in.nextInt(); System.out.printf("The Difference of two numbers: %d\n", a-b); System.out.printf("The...

Discuss design patterns such as the Singleton, Factory, and Observer patterns and their implementations.

What is a tree in Java? A A tree is a branching mechanism that allows multiple decisions in one statement. B A tree is a collection in which each entry has one parent but may have multiple children. C A tree is a collection in which each entry may have multiple parents but may have only one child. D A tree is a method call pattern where each call may generate multiple additional calls until the process is complete. What arguments does Java need to create a Font object? A One argument: the font's name. B Two arguments: the font's name and its style. C Three arguments: the font's name, its style, and its size. D Four arguments: the font's name, its style, its size, and its color. How do we use an iterator to get the next element in a collection? A We call the iterator's next() method. B We call the collection's iterate() method....

The language is Java. The chapter this is in is on looping.

Could you help explain the notion of "Data Encapsulation" in Java and how it relates to "Object-Oriented Programming"?

Suppose that you are being interviewed for a position as a Java software developer. Suppose further that the interviewer asks how inheritance, interfaces, generic classes, and abstract classes are of benefit to developers. Using good grammar, complete sentences, correct grammar, answer this question in the manner you would answer the interviewer.

Please give a full detailed optimized solution in Java 8 for the given problem, use the example code provided as well. Please provide comments and screenshots of code and output. Also, add the time/space complexity and the reason for it.Java 8 Code Example:import java.io.*; import java.util.*; import java.text.*; import java.math.*; import java.util.regex.*; public class Solution { public static void main(String args[] ) throws Exception { /* Enter your code here. Read input from STDIN. Print output to STDOUT */ } }

Could you help explain the notion of "Data Encapsulation" in Java and how it relates to "Object-Oriented Programming"?

Could you help explain the notion of "Data Encapsulation" in Java and how it relates to "Object-Oriented Programming"?

Could you help explain the notion of "Data Encapsulation" in Java and how it relates to "Object-Oriented Programming"?