Java

Java is a powerful object-oriented language that is fun to use para sa mga begginer lalo na sa mga may karanasan na sa paggawa ng isang substantial information system. Maaari itong maging language of choice sa pag-implement ng Internet-based o Internet based applications as well as software for devices that communicate over networks.

Nagcoconsist ang Java ng several parts: an environment, the language, the Java Applications Programming Interface (API), and various class libraries. Normally, java programs have five phases to be executed. ito ang edit, compile, load, verify and execute.

Experienced programmers sometimes take pride in being able to create some weird, contorted, convoluted usage of a language. This is a poor programming practice. It makes programs more difficult to read, more likely to behave strangely, mas mahirap din itong itest at idebug, and more difficult to adapt to changing requirements. Also maaaring magrun ang any program written in Java sa iba’t ibang unit o computer. The most problem with the early versions of Java is that the programs execute interpretively on the client’s machine. Iniinterpret nito ng isa-isa line by line compared to fully compiled code machine.

Here is a simple program for printing a line of text.

public class Welcome1

{

public static void main( String args[] )

{

     System.out.println(“Welcome to Java Programming!”);

}

}

Tapos ito yung magiging output: Welcome to Java Programming!

            Sa pagcocompile ng isang Java program, we open a command window, baguhin ang directory kung saan nakastore ang program tapos itype ang java Welcome1.java. Kung ang iyong program ay hindi nagco-contain ng any syntax error, the preceding command creates a new file na tinatawag na Welcome1.class containing the Java byte codes na magre-represent ng application. Ang byte codes na ito ay syang iiinterpret ng Java interpreter kapag iniexecute na natin ang program by typing java Welcome1.

            Kapag nagkaroon ng isang syntax error, maaring wala ito sa line na inindicate ng error messages. First, icheck muna ang line na inindicate ng error messages at kapag hindi ito ang nagco-contain ng error, sunod naming tingnan para icheck ay ang preceding lines ng program.

Every program ng Java ay nagco-consist ng atleast one class definition that is defined by the programmer. Ang keyword na class ang nag-iintroduce ng class definition ng Java na sya namang sinusundan ng class name (Welcome1). Keywords are always spelled with all lowercase letters.

Laging tandaan na ang Java ay case sensitive. Ang hindi paggamit ng proper uppercase at lowercase letters for an identifier ay maituturing na syntax error. You should always begin a class name with a capital first letter. When reading Java program, laging tingnan ang identifier na nagsisimula sa capital letters. These normally represent Java classes. Avoid using identifiers containing dollar sign ($) as these are often used by the compiler to create identifier names. public static void main( String args[] ) --- ito ay part ng every Java application. Automatically java applications begin executing at main. Ang parenthesis after main ay nag-iindicate na ang main ay isang program method. The left brace begins the body of the method definition then the right brace must end the method definition’s body. System.out.println(“Welcome to Java Programming!”); --- ito naman ang nag-iinitiate sa computer to print the string of characters contained between the double quotation marks. Maaari din tawaging character string, a message or a string literal ang string. System.out is known as the standard output object. It allows Java applications to display strings and other types of information in the command window from which the Java application is executed. System.out.println --- its argument in the parenthesis and the semicolon is called a statement. Kailangang ang every statement must end with a semicolon o ang tinatawag na statement terminator. Kapag naexecute na ito, it now displays the message (Welcome to Java Programming!) in the command window.

by: Camille Abigail M. Rollan

200910643

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What is it like being a 3rd year Com Sci student?

Having a life full of surprises like mine is like trying to spend your life in a certain aspiration of desires to manage what I really feel and love on doing in my everyday living. Perhaps what I really mean is that I luck of inspiration, because before I really don’t want to go to school or study in a university, I couldn’t see myself wearing a uniform, taking showers everyday early in the morning and spending half of my day in school studying. But time comes and I learned to create a new life and start things all over again in a more passionate way I could ever do in the life I have now and that’s by taking Bachelor in Science in Computer Science.

At the start I never foresee what things I could expect in this course but slowly I cope up with everything this course offers me. Through the effect of stress and thinking “how could I ever pass every single unit and subjects I have” all out the semesters that I had encountered. But never the less I surpassed all of if through the help of my classmate syempre tropa eh. Anyway i accomplished to be strong untill now and since the start of the first semester on the third year I manage to understand how a pressure and stress can affect my mined.

There are times I wanted to withdraw my sword and surrender the battle amongs those people in front of me. I know that their just doing their job on teaching us but the fact that the pressure they give us make me loose my mined, in instance I could tell myself na “uy I should work nalang kaya and stop my studying kase dyahe hirap ng mag-aral sobrang stress na ko” but I couldn’t do that because I told myself na may mga umaasa sa akin sa family ko and with that I hinder my insperation and serve that as a protocol to take my home to the server of the school. Parang sinabi ko na ang life ko for now is iikot talaga sa school at these would be my 127.0.0.1, kahit na nag-mumukang kawawa ako compare sa other classmates ko kase parang I am the weakst of them all pag-dating sa logical aspects but on the contrary naman nakakapasa pa rin naman ako.

 These third year naman second semester na, although mejo naging loose na ang time and we got more minutes to relax it doesn't mean to say na makakapag-relax talaga kami. It is always said na if you got more time to spare you got to spare your time working hard on your studies lalo na ngayon gawaan na ng sytem and software para sa thesis. Looking at this na two pairs lang ang kailangan for creating the thesis naku I hard to work quadrople time para makapag-handa and makapag isip ng tama at the pick of this university life we are having na talaga. Walang arte at walang pag-sasawalang bahala for everything we need to work with kaya sana naman mabawasan yung pressure sakin. I should take risk and change my attitude to everyone para they would not say na I don’t deserve being with them and together with them all I got and I believe in is at stake in here, my life would be a waste if I fall behind them kase hirap mag-isa and yung umaasa sa akin na mother ko na she wanted me to finish my course is talagang dapat kong I give sa kanya so all of everything bad or good, worst or better kailangan ko talagang I take at I handle.

This is the pressure I felt being a third year Com Sci student and continuing to accompany me untill now. So the inspiring thing I could take from all of this was the my mother and family na umaasa sa akin and besides for what pa if madadapa lang ako sa huli tapos I would not get up para I continue to syempre tuloy tuloy lang ako kahit nanjan sina teacher pressure and prof. stress pero tama lang yun para naman marealize naman kung gaano kasarap ang feeling kapag na accomplish namin ang binibigay nilang firewall sa amin para wasakin at malusutan kaya life goes on for me now.

Eric Jeffrey Arriola
           200911820

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What is the difference between Info Tech, Com Sci and Info Sys courses?

                
                 
                 Today there are so many ways for students to create their own path on what they would wanted to become for their own future. Never the less this future that I mentioned have certain effect to the idea of all teenagers and people who wants to learn, the future of computer technology and the system that inhabits every single line of data that they will encounter as part of this technological evolution. Frankly some courses have different forte or ways and speciallizations, and for some common degree courses offered to the students are Information Technology, Computer Science and Information System degrees although they have the similarities of not having liscence like the nursing degrees have, or engineering courses offers but likewise the courses I mentioned still have certificates that could grant them ensurance for future work and the only good thing on bachelors degree we have is that we don’t have to go through board exams, just to have liscence.

The struggle of knowing what different structure of the program the Information Technology has from Computer Science and Information System took place on my mined. Kaya syempre for a Computer Science student like me, i should make some pointers kung paano ko bibigyan ng specifications ang bawat courses na close sa course ko but not quite similar to each other.

For Information Technology the requirements that you will inhabit dito are ang pag-tackle ng management and information theory. Sa management you will study all business and organizational activities using available resources efficiently and effectively at syempre management comprises planning, organizing, staffing, leading or directing, and controlling an organization . Information technology can be expected to concentrate on the business and communicating applications of computing, although there is more emphasis on these two areas in the  e-commerce , e-business and business information technology undergraduate courses. At the associate’s degree level, typical courses include project-based information systems, Website database implementation, introduction to DHTML and Java Script, as well a mathematics based curriculum. So they are more on application to businesses kaya ang approach nila sa students is parang madali for them to study by that course and ang alam ng karamihan eh mas madaming offerings ang makukuha nila after graduating with this course.

In Computer Science we study more on algorithms, mathematical calculations and logic structures of programming for system based applications and also for the software development. Dito we tackle web development where it is coded by the form of javascript on html or php based codes. Pero Com Sci’s are logically analysis everything from automata to the creation of system based software. Pumapasok rin dito ang designing of system syempre may mga units na the same ang Info Tech from Com Sci. As much as I know we dig deeper kesa sa Info Tech, I mean the thing that seperates us from them is yung skeletal structure bago pumasok sa isang certain system. More broad but we take the simplest analytical structure on every thing that we do, syempre we take the complex problem but never the less we take it to the shortest way as we can to solve it. Taking this course syempre pag-aralan pa rin ang databases, computer architecture and operating systems. Yung expansion ng artificial inteligece or any expert systems is pwede naming I handle uhm although mas limited ang offerings sa Com Sci we still have the ability to expand more and create more answers to the problems we also create. If theres no problem we will create the problem para masaya.

For Computer Information System Degree naman is a professionally orientated course with a strong practical focus. Para sa Info Sys you will develop real systems, products and services in studios specially design for ‘learning by doing’ ito yung more on sa pag-aapply ng pratical parang hands-on baga. The course provides the skills and knowledge to solve information problems and manage information-related opportunities in business, education and society, just like the other two courses I mentioned the in this course you are introduced to the basic concepts in information management and information systems, project management, database and computer programming. Sa Info Sys they're also relied upon to analyze existing systems and discover new ways to optimize their performance. Sila yung nag so-solve ng mga bagong system at sila na rin yung nag-rere-envent ng existing software.

Kaya for the closure lang it is more likely na maraming pagkakaparehas ang Info Tech, Com Sci and Info Sys pero at the same time they wouldn’t be the same parin. I say na parang Earth ang three mentioned courses, the Inner Core would be the Computer Science, the outer core is the Information Technology and the Mantle would be the Information System and the crust would be shared equally by the three degrees. Yan yung simplest way para I paliwanag ko in my own way ang form ng mga courses.

Camille Abigail Rollan

200910643

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How does the Search engine of GOOGLE works?

Google runs on a distributed network of thousands of low-cost computers and can therefore carry out fast parallel processing. This parallel processing has a method of computation in which many calculations can be performed simultaneously, significantly speeding up data processing. Pero the important knowledge we should know about how the google search engine works is yung algorithm na they used for its system which is called “Pagerank Algorithm”, this is the software behind the google search technology that conducts a series of simultaneous calculations na nag re-require lang ng halos a fraction of a second for the process nito. The traditional search engines is nag re-rely lamang on how often a word appears on a web page. Trough the use of the Pagerank algorithm, it examine the entire link structure of the web and determines which pages are most important. It then conducts hypertext-matching analysis to determine which pages are relevant to the specific search being conducted. By combining overall importance and query-specific relevance, it ables to put the most relevant and reliable results first(The Google search Engine and Google Graphic).

The factual information about Pagerank algorithm is that it helps rank web pages that match a given search string. The PageRank algorithm instead analyzes human-generated links assuming that web pages linked from many important pages are themselves likely to be important. The algorithm computes a recursive score for pages, based on the weighted sum of the PageRanks of the pages linking to them. PageRank is thought to correlate well with human concepts of importance. A Web page's PageRank depends on a few factors; one is the frequency and location of keywords within the Web page which the keyword only appears once within the body of a page, it will receive a low score for that keyword. The second is how long the Web page has existed, that determines people create new Web pages every day, and not all of them stick around for long. Google places more value on pages with an established history. The last would be the number of other Web pages that link to the page in question which google looks at how many Web pages link to a particular site to determine its relevance(CyberAge Books 2001).

The process of google search engine has three distinct parts, namely the googlebot it is a web crawler that finds and fetches web pages, the second is the indexer that sorts every word on every page and stores the resulting index of words in a huge database. The last is the query processor, which compares your search query to the index and recommends the documents that it considers most relevant(CyberAge Books 2001).

Googlebot, Google’s Web Crawler

Googlebot is Google’s web crawling robot, which finds and retrieves pages on the web and hands them off to the Google indexer. It’s easy to imagine Googlebot as a little spider scurrying across the strands of cyberspace, but in reality Googlebot doesn’t traverse the web at all. It functions much like your web browser, by sending a request to a web server for a web page, downloading the entire page, then handing it off to Google’s indexer. Googlebot consists of many computers requesting and fetching pages much more quickly than you can with your web browser. In fact, Googlebot can request thousands of different pages simultaneously. To avoid overwhelming web servers, or crowding out requests from human users, Googlebot deliberately makes requests of each individual web server more slowly than it’s capable of doing. Googlebot finds pages in two ways: through an add URL form and through finding links by crawling the web(Copyright © 2003 Google Inc.).

When Googlebot fetches a page and yung lahat ng links appearing on it and adds them to a queue for subsequent crawling. The googlebot tends to encounter little spam because most web authors link only to what they believe are high-quality pages. By harvesting links from every page it encounters, Googlebot can quickly build a list of links that can cover broad reaches of the web. This technique, known as deep crawling, also allows Googlebot to probe deep within individual sites. Because of their massive scale, deep crawls can reach almost every page in the web. Because the web is vast, this can take some time, so some pages may be crawled only once a month. Although its function is simple, Googlebot must be programmed to handle several challenges. First, since Googlebot sends out simultaneous requests for thousands of pages, the queue of “visit soon” URLs must be constantly examined and compared with URLs already in Google’s index. Duplicates in the queue must be eliminated to prevent Googlebot from fetching the same page again. Googlebot must determine how often to revisit a page. On the one hand, it’s a waste of resources to re-index an unchanged page. On the other hand, Google wants to re-index changed pages to deliver up-to-date results (Copyright © 2003 Google Inc.).

Google’s Indexer

            The Googlebot gives the indexer the full text of the pages it finds. These pages are stored in Google’s index database. This index is sorted alphabetically by search term, with each index entry storing a list of documents in which the term appears and the location within the text where it occurs. This data structure allows rapid access to documents that contain user query terms. To improve search performance, Google ignores common words called stop words such as the, is, on, or, of, how, why, as well as certain single digits and single letters. Stop words are so common that they do little to narrow a search, and therefore they can safely be discarded. The indexer also ignores some punctuation and multiple spaces, as well as converting all letters to lowercase, to improve Google’s performance (Copyright © 2003 Google Inc.).

Google’s Query Processor

The query processor has several parts, including the user interface which is the search box, then the engine that evaluates queries and matches them to relevant documents, at yung results formatter. PageRank is Google’s system for ranking web pages. A page with a higher PageRank is search first and ito yung more important and is more likely to be listed above a page with a lower PageRank. Google considers over a hundred factors in computing a PageRank and determining kung anong documents are most relevant to a query, including the popularity of the page, the position and size of the search terms within the page, and the proximity of the search terms to one another on the page. Google also applies machine-learning techniques to improve its performance automatically by learning relationships and associations within the stored data. For example, the spelling-correcting system uses such techniques to figure out likely alternative spellings. Google closely guards the formulas it uses to calculate relevance; they’re tweaked to improve quality and performance, and to outwit the latest devious techniques used by spammers. Indexing the full text of the web allows Google to go beyond simply matching single search terms. Google gives more priority to pages that have search terms near each other and in the same order as the query. Google can also match multi-word phrases and sentences. Since Google indexes HTML code in addition to the text on the page, users can restrict searches on the basis of where query words appear, in the title, in the URL, in the body, and in links to the page, options offered by Google’s Advanced Search Form and Using Search Operators “Advanced Operators”(Copyright © 2003 Google Inc.).

And lahat ng ito is done in less than a second, 300 million times a day generating over $20 billion a year for google so they earn many money talaga.

Eric Jeffrey Arriola
200911820

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My top 10 list of songs that I always sing in a Videoke, and why? or My top 10 list of songs that I always dance into and why?

My Top 10 Lists of Songs:

Dance with My Father

Last Fight Out

DJ Got Us Falling In love

What Matters Most

Jesus Take the Wheel

If You’re Not the One

Like we Used to

Jar if Hearts

Right Here Waiting

Halo

           Napakagandang tingnan ng isang pamilyang kumpleto at masaya. Kaya naman minsan hindi ko maiwasang mainggit sa kanila.

            Dance with my father --- hindi madaling mawalan ng isang ama lalo na at biglaan at hindi inaasahan ang mga pangyayari. So whenever I heard this song, nagiging emotional ako.  January 20, 2006 ng kunin sa amin ang aking ama. Heart attack at sakit sa bato ang cause of death na noon lang din namin nalaman na may sakit pala siya sa puso tapos yung isang kidney niya hindi na nagpa-function. Papa’s girl kasi ako so para sa akin hindi madaling tanggapin na wala na siya. May mga oras na naiiyak ako pag naiisip ko siya at namimiss ko siya. Pero syempre kahit wala na siya hindi ko pa din nalilimutan yung mga pangaral niya sa akin.  Sabi nga nila wala ka ng magagawa kapag oras na ng isang tao. May dahilan si Lord kung bakit may nauuna at may naiiwan. At kung anumang achievements ang makuha ko, para to sa kanya kahit hindi nya to makita. At isa sa pinakamagandang regalo na maibibigay ko sa kanila ng aking ina ay ang diploma ko pag nakatapos ako ng kolehiyo. Iniisip ko na lang na nandyan lang siya para sumuporta sa aming magkakapatid. 

by: Camille Abigail M. Rollan

20091643

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My top 10 list of songs that I always sing in a Videoke, and why? or My top 10 list of songs that I always dance into and why?

My Top 10 Lists of Songs:

Dance with My Father

Last Fight Out

DJ Got Us Falling In love

What Matters Most

Jesus Take the Wheel

If You’re Not the One

Like we Used to

Jar if Hearts

Right Here Waiting

Halo

           Napakagandang tingnan ng isang pamilyang kumpleto at masaya. Kaya naman minsan hindi ko maiwasang mainggit sa kanila.

            Dance with my father --- hindi madaling mawalan ng isang ama lalo na at biglaan at hindi inaasahan ang mga pangyayari. So whenever I heard this song, nagiging emotional ako.  January 20, 2006 ng kunin sa amin ang aking ama. Heart attack at sakit sa bato ang cause of death na noon lang din namin nalaman na may sakit pala siya sa puso tapos yung isang kidney niya hindi na nagpa-function. Papa’s girl kasi ako so para sa akin hindi madaling tanggapin na wala na siya. May mga oras na naiiyak ako pag naiisip ko siya at namimiss ko siya. Pero syempre kahit wala na siya hindi ko pa din nalilimutan yung mga pangaral niya sa akin.  Sabi nga nila wala ka ng magagawa kapag oras na ng isang tao. May dahilan si Lord kung bakit may nauuna at may naiiwan. At kung anumang achievements ang makuha ko, para to sa kanya kahit hindi nya to makita. At isa sa pinakamagandang regalo na maibibigay ko sa kanila ng aking ina ay ang diploma ko pag nakatapos ako ng kolehiyo. Iniisip ko na lang na nandyan lang siya para sumuporta sa aming magkakapatid.

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