Did you Know: We can use generators/coroutines in place of multi-threading?
Most of us don't think twice about the simple for loop or how it works. Why should we? Is there anything behind it? How does it work? Let's take a look behind the scenes. Python's for loop is really a for each loop (for each element in collection).
msg = "The quick brown fox jumps over the lazy dog"
If we want to traverse the string above to produce each letter one by one, we simply treat this string like any other sequence in python.
for letter in msg:
'T h e q u i c k b r o w n .... lazy dog...
Outcomes our string one letter at a time to the standard output. So what is the for loop actually doing for us? Just as you would assume, as if we were to consume an iterator manually.
iterator = iter(msg)
About Java programs, it is very important to keep in mind the following points.
Case Sensitivity – Java is case sensitive, which means identifier Hello and hello would have different meaning in Java.
Class Names – For all class names the first letter should be in Upper Case.If several words are used to form a name of the class, use camel-casing.Example class FirstJavaClass
Method Names – All method names should start with a Lower Case letter.If several words are used to form the name of the method, use camel-casing.Example public void TheMethodName()
Program File Name – Name of the program file should exactly match the class name.When saving the file, you should save it using the class name and append ‘.java’ to the end of the name (if the file name and the class name do not match your program will not compile). Example: Assume ‘MyFirstJavaClass’ is the class name. Then the file should be saved as ‘MyFirstJavaClass.java’
public static void main(String args)...
Java SE is freely available from the link
Download Java. So you download a version based on your operating system.
Follow the instructions to download java and run the file to install Java on your machine. Once you installed Java on your machine, you can download the most popular
Eclipse IDE for Java Developers. Once you run the file and the IDE is installed, create a shortcut for that on the desktop so that it will be easily accessible later. After creating a shortcut, you are all set to create your first Java program.
Object Oriented: In Java, everything is an Object. Java can be easily extended since it is based on the Object model.
Platform independent: When Java is compiled, it is not compiled into platform specific machine, rather into platform independent byte code. This byte code is distributed over the web and interpreted by virtual Machine (JVM) on whichever platform it is being run.
Simple: Java is designed to be easy to learn. If you understand the basic concept of OOP Java would be easy to master.
Secure: With Java’s secure feature it enables to develop virus-free, tamper-free systems. Authentication techniques are based on public-key encryption.
Powerful: Java makes an effort to eliminate error-prone situations by emphasizing mainly on compile-time error checking and runtime checking.
Multithreaded: With Java’s multithreaded feature it is possible to write programs that can do many tasks simultaneously. This design feature allows programmers to...
When creating output from a Java program, you can control where line breaks occur in the text that you output by using the println method, which puts a line break at the end of whatever text is being output by the call.
However, you may need to insert line breaks into strings that you are creating, such as in the toString method of a class. How do you do it?
First, note that when creating String literals, you can insert a variety of special characters using escape sequences.
An escape sequence is a sequence of characters, starting with a backslash ("\"). When the reader that is constructing your string encounters a backslash, it checks the subsequent character(s), and interprets the sequence as instructions to insert a specific character described by the sequence.
For example, since string constants are delimited by double quote characters, if you want to embed a double quote character in a string...
I created this to provide students with reference material for the technical aspects of Java in easy-to-read slides.As the title suggests, it provides information on the Java environment components, clarifying details about the JDK(Java Development Kit) and the JRE(Java Runtime Environment) as well as the respective sub-components such as the Javac ( Java compiler) and the JVM(Java Virtual Machine). This document also contains directions for installing and configuring the Java environment and a diagram illustrating the Java process from source code creation to execution.
Encourage your high school students to learn computer science. The link below explains you why?
I had my first tutoring session yesterday. I was able to tutor a couple students, one in Java programming and the other in Algebra 1. I enjoyed it very much. I find pleasure in explaining things to others, and I was able to work with a couple of very attentive and bright students. It is exciting to have actually started tutoring. I have been with WyzAnt for several months now and was finally chosen as someone's tutor. Thanks to a friendly family for helping me get started on my tutoring career!
I never actually posted a blog but I figured I'd give it a shot. You see, tutoring was always a fun activity for me, and I've been doing it since 10th grade. I used to go to elementary schools to teach young children how to read, and stay after school at my high school to help others with homework. In college, I found students to tutor as well.
After a two year break, here I am on WyzAnt. I recently completed my first lesson with a student in Java Programming, and I must confess I was quite nervous. It had been 3 years since my last real programming phase in Java, and part of me feared that I'd sit there and stutter myself into a stupor of C++ and other programming language and throw off my student completely. As it turns out, the opposite was the case. While I did every once in a while slip into some accidental C++, I was able to understand everything she needed and help her through her work.
Yesterday, I had a similar experience. A student contacted me to...
I entered a career where I don't get to keep up on my programming skills. So, I stumbled upon WyzAnt. It's a way for me to retain my education while imparting it to others. I enjoy the gratification involved with helping others.
For the past few years, I've spent most of my time teaching and tutoring on physics, but I also tutor students in programming languages such as C, C++ and Java. These languages are three of the most difficult to learn due in large part to their comprehensiveness. These and languages very similar to them are the programming languages used to implement most of the highest performing and functionally complicated applications in the world, including operating systems, office suites, high performing websites and smartphone apps.
Prior to becoming a teacher, I put myself through graduate school teaching classes and tutoring mostly college students on programming. I then worked for about 20 years for software companies developing software, leading development and consulting into business on the development of custom, high performance software.
I welcome inquiries on tutoring of computer science topics, such as software engineering, software architecture, programming and databases...
I have studied Electrical and Computer Engineering and received Master degree in 2008. While I was studying at university, I worked as a teacher assistant. I have taught many courses to undergraduate and graduate students. In addition, I taught a lot of elementary and high school students as tutor. Both of these experiences convinced me to pursue tutoring as a career. Therefore, I have tried hard to become a good teacher. I realized that teacher preparation is the major determinant of a great teacher.
I have taught large variety of courses; however, my best experience is computer programming. Right now, I have some college and high school students whom I am teaching Java, C/C++, Matlab, and object oriented programming. I love teaching the computer programming to any student and can transmit information in the best way at minimum time. If you have any problems in programming and want to become ready for your class or doing your homework, I could help you. You are going to...
Being my first WyzAnt post, I figured I'd just ponder on a fallacious belief new programmers generally have. But before that, allow me to introduce myself! My name is Jaffer, I am a student at APSU, a senior with a major in Computer Science and a minor in Mathematics. I chose to become a CS major because, well, I love video games and I've always wanted to make them. That is why I really got into C# and XNA, as it makes the life of a game programmer significantly easier. I've used C, C++, Java, C#, Ruby, Fortran, Erlang, F#, VB, HTML, PHP, SQL and who really knows what else, and this is over the course of just 2 years really.
So, onto the biggest fallacy a new programmer probably believes: Fallacy: Learning my first language was hard and took a long time (it usually does!). I don't want to learn another language because it will take forever.
Truth: Learning a programming language is not about memorizing syntax or semantics, nor is it a test of if you can place each semicolon...
Data structures are a way by which data is stored and organized in a system. Linked List, Stacks, Queue, Trees, Hash Tables etc. all come under this category.
Best way to learn data structures in any language C, C++, Java etc is to have a pictorial representation of the problem in front of you and then to implement.
Syntax of data structure in any language can be easily learned. One need to focus on the meaning of particular data structure and best way to understand this is to have pictorial representations of what exactly needed to be implemented.
Let's keep this simple. I consider what am I going to do with this new computer. For me, it is a combination of hobby computing, business needs, and personal computing.
I am seriously considering an Apple this time. The Apple will fit my business needs with both software and the Microsoft offering I can be compatible with the office.
The main reason I am considering an Apple is money and security. I am willing to spend the money to get the hardware and software to pursue my hobbies. My hobbies being music, photography, and computing. I like the way media looks and feels on the Apple. And to be honest, I am tired of the pc.
The Apple works.
Security. Security is the key. With identity theft the expense is justified. While working security in the United States Air Force I realized that security is a key component in computing. Therefore, I will spend the money now. Identity theft is serious. Enough said.
Now build the computer.
This sounds easy and here are a...
I have created this blog for my Java students to post their views.
Java is an object oriented programming language. It is an amazing programming language. The more you work on it more you learn it. The best way to understand and learn Java is to understand its basic logic and concepts. One can easily learn the syntax but one has to be very good with logic and concepts. As I always discuss in my class, every single word in Java has a meaning and you have to understand that meaning in order to learn Java or any other programming language.
I have very strong computer education background and very good experience with different programming languages. All I can say is that the best way to learn any programming language is to practice it a lot.
Ken B. in Houston, Texas - known as the "Best Little Tutor In Texas" has surpassed another WyzAnt tutoring milestone by going over the 600th tutoring hour for WyzAnt. All subjects in mathematics and science, high school or college, are done by Ken except biology and biochemistry. Ken has now worked with many many students to help them work on their own and be able to do well on homework, basic studies, tests, and special projects. So, if you are in need of someone in Houston and the surrounding areas who can do all levels of mathematics, plus chemistry, physics, computers, and computer programming, Ken is the one to contact.
Ken B in Houston, Texas, better known as "The Best Little Tutor In Texas" has just surpassed the 500th hour of tutoring for WyzAnt. For any subject or combination of subjects dealing with mathematics, chemistry, physics, computers, and computer programming, he is the one-man-source. His diversified expertise and ability to simplify complex subject for students makes him a par-excellent source for student's studies.
My name is Corey and I am currently a college student who studies in Rutgers University majoring in Electrical Engineering. I would like to take advantage of some of my free time to help other people and free them from their struggles with academics. The subjects below are my best so feel free to e-mail me and I will get back to you as soon as possible to set up an schedule. Thank you for your support.