Java Tutorials associated with AP Computer Science A As you set sail on your journey through AP Computer Science A,you're about to delve into the exciting world of Java programming.With a treasure trove of resources at your disposal,let's embark on a guided tour through the essentials of Java,equipping you w... |
149
Java Getting Started Some PCs might have Java already installed.To check if you have Java installed on a Windows PC,search in the start bar for Java or type the following in Command Prompt (cmd.exe):If Java is installed,you will see something like this (depending on version):I... |
Java Syntax In the vast landscape of programming languages,Java stands as a titan – revered for its versatility,reliability,and widespread usage.At the heart of Java lies its syntax,the rules and conventions that govern the structure and behavior of code.Let us embark... |
Java Comments In Java programming,clarity and readability are paramount.As developers craft intricate algorithms and intricate logic,the need for comprehensive explanations becomes evident.Enter Java comments – a simple yet powerful tool for annotating code and enhancin... |
Java Variables Variables are containers for storing data values.In Java,there are different types of variables,for example::String - stores text,such as "Hello".String values are surrounded by double quotes,int - stores integers (whole numbers),without decimals,such as 1... |
Java Math In the realm of Java programming,mathematics plays a pivotal role,empowering developers to perform a myriad of numerical operations with ease.At the heart of these capabilities lies the Java Math class,a treasure trove of methods designed to simplify compl... |
Java If ... Else You already know that Java supports the usual logical conditions from mathematics::Less than: a < b,Less than or equal to: a b,Greater than or equal to: a >= b,Equal to a == b,Not Equal to: a != b.You can use these conditions to perform different actions f... |
Java Short Hand If...Else (Ternary Operator) In the vast world of programming,efficiency is key.Every line of code counts,and developers constantly seek ways to streamline their scripts without compromising functionality.One such tool in the Java arsenal is the ternary operator,a concise alternative ... |
Java Switch Statements Instead of writing many if.else statements,you can use the switch statement.The switch statement selects one of many code blocks to be executed:Syntax:This is how it works::The switch expression is evaluated once.The value of the expression is compared wit... |
Java While Loop/Do While Loop/For Loop/For-Each Loop/Break/Continue Loops can execute a block of code as long as a specified condition is reached.Loops are handy because they save time,reduce errors,and they make code more readable.Java While Loop.The while loop loops through a block of code as long as a specified conditio... |
Java Classes and Objects Java is an object-oriented programming language.Everything in Java is associated with classes and objects,along with its attributes and methods.For example: in real life,a car is an object.The car has attributes,such as weight and color,and methods,such as... |
Java Scope In Java,variables are only accessible inside the region they are created.This is called scope.Method Scope.Variables declared directly inside a method are available anywhere in the method following the line of code in which they were declared:Block Scope.A... |
Java Methods A method is a block of code which only runs when it is called.You can pass data,known as parameters,into a method.Methods are used to perform certain actions,and they are also known as functions.Why use methods? To reuse code: define the code once,and use ... |
Java Recursion Recursion is the technique of making a function call itself.This technique provides a way to break complicated problems down into simple problems which are easier to solve.Recursion may be a bit difficult to understand.The best way to figure out how it wor... |
Java Packages Java Packages & API.A package in Java is used to group related classes.Think of it as a folder in a file directory.We use packages to avoid name conflicts,and to write a better maintainable code.Packages are divided into two categories::Built-in Packages (... |
Java Inheritance (Subclass and Superclass) In Java,it is possible to inherit attributes and methods from one class to another.We group the "inheritance concept" into two categories::subclass (child) - the class that inherits from another class,superclass (parent) - the class being inherited from.To... |
Java Inner Classes In Java,it is also possible to nest classes (a class within a class).The purpose of nested classes is to group classes that belong together,which makes your code more readable and maintainable.To access the inner class,create an object of the outer class,a... |
The Print() Method Print Text.You learned from the previous chapter that you can use the println() method to output values or print text in Java:You can add as many println() methods as you want.Note that it will add a new line for each method:Double Quotes.When you are work... |
Difference between Java and Javascript Java and JavaScript are two distinct programming languages that serve different purposes and have different capabilities,despite the similarity in their names.Here's a comparison to highlight their differences:Origin and Purpose:Java: Developed by Sun Micr... |
Creating a simple Java Servlet (Web Server Page) with Apache Maven on Microsoft Windows STEP 1. Install OpenJDK 17https://learn.microsoft.com/en-us/java/openjdk/download#openjdk-17 → select microsoft-jdk-17.0.10-windows-x64.msi → Install STEP 2. Install Mavenhttps://maven.apache.org/ → Download → apache-maven-3.9.6-bin.zip (or latest version)... |
Java Servlet Example Creating a quick servlet-based web application involves a few steps. You'll need to set up a development environment, create the necessary project structure, write servlet classes, configure the deployment descriptor (web.xml), and deploy the application t... |
What is Java? With a population of 151.6 million people, Java is the world's most populous island, home to approximately 56% of the Indonesian population.Some of you may curious why Java is the most famous in Indonesia, becaue many of the best known events in Indonesian... |
Java Polymorphism Polymorphism means "many forms", and it occurs when we have many classes that are related to each other by inheritance.Like we specified in the previous chapter; Inheritance lets us inherit attributes and methods from another class. Polymorphism uses those... |
Machine Learning Types and Programming Languages In the area of Machine Learning Technology, threre are three different types of Machine Learning. You should make decision which type you want to use if you are trying to implement something. In Supervised Learning, we are given the data sets and already k... |
Loading XML Data with JavaScript You can use JavaScript to load XML data using various methods.One common approach is to use the XMLHttpRequest object (XHR) or Fetch API to make an asynchronous HTTP request to fetch the XML data from a server.Here's a basic example using XMLHttpRequest:In... |
ChatGPT Reset command and Ignore the Previous Response feature to have a Solid Result The ChatGPT Reset Command is a feature that allows you to reset the conversation context and start fresh.This can be useful if you want to change the topic or start a new line of inquiry without any prior context influencing the conversation.Reset Command:... |
ChatGPT Connectors makes the results Perfect as you expected Connectors are essential for structuring requests to ChatGPT in a clear,organized,and efficient manner.They facilitate natural language understanding and ensure that all aspects of your request are addressed,leading to more effective interactions with the ... |
Mastering Excel Data Manipulation with Python Python provides an awesme feature can access Excel spreadsheet file that based on pandas.You can use the pandas library in Python to read an Excel file and store its data into a Python array. Here's a basic example:Replace 'your_excel_file.xlsx' with the p... |
RegExp example in Python to exclude javascript from HTML code To exclude JavaScript from HTML code using Python, you can use regular expressions (re module) to remove all tags and their contents. Here's a simple Python function to achieve this:This function exclude_javascript() takes an HTML code string as input and ... |
How do I replace content that based on the HTML UI Template When UI Design is provided or made for specific purpose, we may need to find the easy way can fill it up if that is based on HTML Table.Below case is what I tried during implementing WE Service: If we have multiple items, we can fill it up in the for ... |
Regular Expressions in JavaScript Regular expressions in JavaScript are a powerful tool for working with strings. They allow you to search for patterns within strings and manipulate them as needed. Here's a basic overview:Creating Regular Expressions: You can create a regular expression in... |
Python Tutorials for AP Computer Science Principles, Data Projects and High School Internship Python is not just a programming language; it’s a gateway to opportunities in technology.Recognized for its versatility and ease of use,Python has become a staple in data analytics and machine learning,fields that are critical to the tech industry.Many tec... |
Code Chronicles - A Caffeine-Fueled Journey into Data Software Engineering Interning in Data Software Engineering was like entering a realm where coding meets caffeine-fueled euphoria.The excitement bubbled within me like an over-caffeinated potion as I delved into the world of zeros and ones.“Excitement is like caffeine for the ... |
Python Modules What is a Module?.Consider a module to be the same as a code library.A file containing a set of functions you want to include in your application.Create a Module.To create a module just save the code you want in a file with the file extension .py:Use a Mod... |
Python Scope A variable is only available from inside the region it is created.This is called scope.Local Scope.A variable created inside a function belongs to the local scope of that function,and can only be used inside that function.Function Inside Function.As explai... |
Python Polymorphism The word "polymorphism" means "many forms",and in programming it refers to methods/functions/operators with the same name that can be executed on many objects or classes.Function Polymorphism.An example of a Python function that can be used on different ob... |
Python Iterators An iterator is an object that contains a countable number of values.An iterator is an object that can be iterated upon,meaning that you can traverse through all the values.Technically,in Python,an iterator is an object which implements the iterator protoco... |
Python Inheritance Inheritance allows us to define a class that inherits all the methods and properties from another class.Parent class is the class being inherited from,also called base class.Child class is the class that inherits from another class,also called derived clas... |
Python Classes/Objects Python is object-oriented.In Python,most things are objects with properties and methods.Class is an object constructor or "blueprint" for creating objects.Create a Class.To create a class,use the keyword class: .Create Object.Now we can use the class named... |
Python Arrays Arrays are used to store multiple values in one single variable: Access the Elements of an Array.You refer to an array element by referring to the index number. .The Length of an Array.Use the len() method to return the length of an array (the number of el... |
Python Lambda A lambda function is a small anonymous function.A lambda function can take any number of arguments,but can only have one expression.Syntax.The expression is executed and the result is returned:Lambda functions can take any number of arguments:Summarize arg... |
Python Functions A function is a block of code which only runs when it is called.You can pass data,known as parameters,into a function.A function can return data as a result.Creating a Function.In Python a function is defined using the def keyword: .Calling a Function.To c... |
Python While Loops/For Loops The while Loop.With the while loop we can execute a set of statements as long as a condition is true.The while loop requires relevant variables to be ready,in this example we need to define an indexing variable,i,which we set to 1. .The break Statement.Wit... |
Python Conditions and If statements Python supports the usual logical conditions from mathematics::Equals: a == b,Not Equals: a != b,Less than: a < b,Less than or equal to: a b,Greater than or equal to: a >= b.These conditions can be used in several ways,most commonly in "if statements" and ... |
Python Dictionaries Dictionaries are used to store data values in key:value pairs.A dictionary is a collection which is ordered*,changeable and do not allow duplicates.Dictionaries are written with curly brackets,and have keys and values:Dictionary Items.Dictionary items are ... |
Python Sets Sets are used to store multiple items in a single variable.Set is one of 4 built-in data types in Python used to store collections of data,the other 3 are List,Tuple,and Dictionary,all with different qualities and usage.A set is a collection which is unord... |
Python Tuples Tuples are used to store multiple items in a single variable.Tuple is one of 4 built-in data types in Python used to store collections of data,the other 3 are List,Set,and Dictionary,all with different qualities and usage.A tuple is a collection which is o... |
Python Comparison Operators OperatorDescriptionExample.==,If the values of two operands are equal,then the condition becomes true.(a == b) is not true..!=,If values of two operands are not equal,then condition becomes true.(a != b) is true..If values of two operands are not equal,the... |
Python Arithmetic Operators OperatorDescriptionExample% ModulusDivides left hand operand by right hand operand and returns remainder20 % 10 = 0* MultiplicationMultiplies values on either side of the operator10 * 20 = 200** ExponentPerforms exponential (power) calculation on operators... |
Python Lists Lists are used to store multiple items in a single variable.Lists are one of 4 built-in data types in Python used to store collections of data,the other 3 are Tuple,Set,and Dictionary,all with different qualities and usage.Lists are created using square br... |
