Pradeep's Blog

Use of Between in SQL queries

empty85 — Wed, 26 May 2010 07:13:03 +0000

The BETWEEN condition allows you to retrieve values within a range.

The syntax for the BETWEEN condition is:

SELECT columns
FROM tables
WHERE column1 between value1 and value2;

This SQL statement will return the records where column1 is within the range of value1 and value2 (inclusive). The BETWEEN function can be used in any valid SQL statement – select, insert, update, or delete.

But the use of BETWEEN also have some limitations.

Imagine a scenario :

10 % to user whose balance above 10000(inclusive) and less than 20000(exclusive)
20 % to user whose balance above 20000(inclusive).

Now if one fires this query :

SELECT accounts
FROM tab_accounts
WHERE balance between 10000 and 20000;

It will return all those accounts whose balance is between 10000 and 20000(both values are inclusive). so one must think before using it.

Better way to use operators.

SELECT accounts
FROM tab_accounts
WHERE balance>=10000 and balance<20000;

this way one can retrieve the correct values.

Accessing the Map values using keySet iterator

empty85 — Mon, 17 May 2010 05:23:40 +0000

As we all make this mistake and we as a programmers are already aware of this mistake, but we still tends to make this mistake. A common mistake is to retrieve values from a Map while iterating over the Map keys with keySet(). Calling Map.get(key) for each entry is expensive and should be avoided for better performance.

Use entrySet() iterator to avoid the Map.get(key) lookup.

I was making this mistake

for (String object : objectMap.keySet()) {

query.setParameter(object, objectMap.get(object));

}

But soon I realized this is an expensive call, and now started using :

for (Map.Entry entry: queryMap.entrySet()) {

query.setParameter((String)entry.getKey(), entrySet.getValue());

}

Which saves a lot of time, so this is a add-on to the performance,

Also the typecasting to String is also not needed here, as the compiler is smart enough to judge that.

Hope this helps

It takes more that 50 ms to execute the first method, but ti took less than 20 ms to execute the same thing.

Clash for the barclays premier league Title

empty85 — Sat, 03 Apr 2010 11:04:21 +0000

This is going to be the most exiting match of this season.

For ManU its a very important game, if they win, this means they will got a lead of 4 points from Chealsea, which is 2nd in the table. Now only 6 games left for ManU this season including this game. They got a very strong chance to win this season. If they loose this one then also they have a strong chance to win this season.

For Chealsea, if they win they got a lead of 2 points from ManU, this means they are back on the hot seat. They are also looking strong this season.

If the match ends up in a draw, they Arsenal fans going to cheer. And the league again going to be open among three.

The results scenario :

Human being : Another Animal

empty85 — Sat, 13 Mar 2010 19:30:13 +0000

Many of you start thinking a lot about reading this heading of this article “Human Being : Another Animal”. Many might thought that what I am suppose to say, what I am going to write under this heading. Many more questions are arising in your mind. Let me clarify before I proceed, that what I am going to write under here. Have you seen an animal suppose a dog getting married to a bitch(seems a bad word to use, but when its here for the users to use it, so better use it, instead of leaving it jus a part of dictionary). As per me everything is okay and understandable until someone din’t hurt by your comments. I am sorry, if someone disagree with me.

So where we are, I am going to tell you what I am going to write in here. Hmmm.. You might have seen dogs and bitches playing in nights, also noticed that the same dog and the different bitch every time. Does any one complained for this, that why this is allowed for Dogs when it is not allowed to humans in our society. Let me ask you a simple question : How many of you married people cheat on your partners(Thank God I am still single.).. So what the answers. I guess when males are considered, the number goes around 90% and in case of females it around 60%, as women are more scared of the society. They think more about their surrounding. One more reason can be possible as males used to pay to have sex with someone else than her partner. But women cant do that so often.

One of my friend said to me that, its really sad to get married without any relation, as I dint realize anything else. I just think that everything is just the same. Whenever she said this to me I always used to told her one thing..”What kind of restrictions are imposed on you, hunt for a guy and have it, if you want, else stop thinking.” One day she said to me that this isn’t easy, as our society wont allow. But this made me think, that why these restrictions are on us when we are same as animals, can’t we think this way. We are also tends to be attracted towards opposite sex, same as other animals. Now over that also some people argued with me that this is why we are most intelligent animals, and thus we are humans.

What humans, we used to fight more than animals, so this makes us more worse than animals.

Birds do it, bees do it, even educated fleas do it… So what’s stopping us humans from admitting that we do it too?

Is it true that our society put so many restrictions on ourselves, so that we are scared of this.

One more thing which I feel : “Monogamy is boring, Its not natural.” Is it.??

If you disagree write about it, else accept it.

When the Tiger Woods episode was in news, media created a whole lot of drama to sale this news. But does any news paper or news agency tried why so many cases of such type of news arises year after year, when the celebrities after a lots of society pressure cannot afford to live in with a single spouse, their might be many common people who used to do it more often when they are afraid of no-one. As no-one going to say anything to them.

People I am not saying its a good or bad thing to have sex with more than one person. But if you want an the other person is ready to have the same with you, their is nothing wrong in that, speak up, Instead of keeping yourself shut provides you the solution for that. This is in my mind from a long back, Today finally I got time to write about this. As people are so afraid of their surroundings that they even shut their dreams and desires.

If your dreams and desires won’t hurt someone else, go live your dreams. If you don’t live them today, you wont able to live in future too. Whenever anything comes to my mind I do. I am never afraid of the results, specially when the results won’t affect myself much.

Why we humans are so afraid of ourselves. ??

My friend said to me that I don’t even know how it feels when someone kiss you, is it going to be some different or not. But these days people used to be in more than one relationship at a single time.

I’ll add more to this again when I get more time. For the time being buhBye. If I am wrong somewhere please correct me. This is me. free flow of thoughts.

“English isn’t that good but isn’t that bad that you dunn understand my thoughts.”

Will be back soon with a bang Live today stop thinking about past or future, stop caring about others thinking about you until you can see yourself in the mirror. Till then nothing is bad.

Even I read somewhere Good sex keeps you healthy.

My preparation for SCJP

empty85 — Sun, 07 Mar 2010 07:00:03 +0000

As I am working on Java platform so its good for me to have a word recognized Java Certification. So I decided to be a SCJP certified Java programmer. Its always good to be a certified programmer than to be a good programmer. As your certificates speaks about you knowledge.

When I started looking for the SCJP study material I realized that it is very easy to crack this exam by reading dumps. Initially I thought I’ll give this exam by reading 2-3 recent dumps. But when I started solving the dumps, I get to know that the questions are not that difficult and a bit tricky one. By solving those problems I get to know many new things, and many things are revised, but there are lots of things about them I really don’t have any idea. Sometimes, I really got confused. So, I discussed this with some of the senior certified programmers. They told me that, I may able to clear the SCJP exam with flying marks above 90% by reading dumps, but what about the concepts.

If you clear SCJP exam, then expectation from you also increases. And if your concepts are not clear, you wont able to deliver, weather you are a certified programmer or not. So they suggested me to refer some books first, when I am clear with my concepts then take on these dumps to practice. so that I can score good marks. They told me to refer two books :

Thinking in Java by Bruce Eckel
SCJP Study Guide by Kathy Sierra

I am not asking you people to only refer these books. Neither I started reading yet. I’ll start reading them from now onwards, what I feel about them will let you know.

One more important thing they told me to refer java forums.

This makes em think so many times that whats there in those Java forums, most of the forums are fill with advertising. This is why I avoid subscribing any kind of forums. But they told me that there are many good Java forums available online. Search for them you’ll find few good ones.

If any one of you have any idea of these Java forums which will help me out so please let me know.

I started preparations for SCJP 1.6, but actually there is no big difference between 1.5 and 1.6, they almost are the same. So one can go for anyone. But its good to have the latest.

I’ll first refer these books and try to finish them as soon as possible and then go for the dumps. In between also I’ll solve some SCJP pattern questions so that I am able to get a idea where actually I stand and hows my preparation for the exam.

Wish me luck..

Google Domain difference

empty85 — Mon, 01 Mar 2010 06:44:38 +0000

Many people thought what is the difference between Google India and Google. Have a look at the two given snapshots, you will get an idea of this.

Though I’ll try to explain it in brief too what makes google opt these different domains for the difference countries, and a common above all.

Have a look at above two snapshots, both the snapshots are taken on the same date same time, It was Holi in India and Winter Olympics are on. When I was searching for remove malicious content, I noticed this in Google India. I thought of trying it in Google world, I noticed the automatic results are different in both the cases.

Google, got it right, the automatic search results are also based on the country you are in. If you open Google, it will redirect you to the country’s Google domain

For eg. If I am in India and try to open Google by default it will take me to google .co.in, But still I can access google.com. Google provide an option to search your result on India basis(for people in India, for rest their own country) and also on the overall world basis.

So, depending on the search results in particular domain, it feeds the automatic results. Wow, Google rocks…

Gmail behaving abnormaly

empty85 — Mon, 01 Mar 2010 06:27:30 +0000

Hmmm..this is what I never expected of gmail, Google’s mail service. I am a great fan of Google services. When I opened my mail box today, I got shocked a bit, I thought their might be some virus which affected my PC. But I scanned my PC and I found nothing malicious. So I guess this might be some problem with Gmail.

I may be wrong but this was my first thought about this incident. If this a some sort of virus then people please let me know. But I guess, if this is some sort of virus, then it should not only turn off some characters instead it would have changed the other characters too.

This is why I believe, this cannot be a virus, or any script running behind the screen.

So what may be the problem but this is for sure this makes me guessing, whats wrong with gmail.

As this is been in news from quite a some time now that the hackers are getting more and more hazardous, and they have increased their attacks. So anyone can be a victim, I though have a bit of knowledge about the hacking sort of things, but this is not enough to save my PC from the attacks of the hackers or penetrators.

If any of you faced such similar scene, please let me know what it is, and what is the solution for this.

A survey related mail

empty85 — Sun, 28 Feb 2010 10:31:12 +0000

Today morning when I got up, I was a bit shocked when I opened my mailbox. I had a habit of checking my mailbox every morning. I got up and opened my gmail account. As we all know their is a shorted of food all over the world. The UN is doing his part of job, but is it enough. Well I can’t comment on that till I have any information on that, or I am in a position to comment on such a big issue. I am a kid to comment on that. But the thing which I am talking here is about that mail.

The mail I got is related to the survey, when I saw the mail I thought there might be some shocking figures and the food shortage, but when I saw the mail, it make me laugh and a bit amused too.

Have a look at the email

A World wide survey was conducted by the UN. The only question asked was:

“Would you please give your honest opinion about solutions to the food shortage in the rest of the world?”

The survey was a huge failure because,

In Africa they didn’t know what ‘food’ meant,

In India they didn’t know what ‘honest’ meant,

In Europe they didn’t know what ‘shortage’ meant,

In China they didn’t know what ‘opinion’ meant,

In the Middle East they didn’t know what ‘solution’ meant,

In South America they didn’t know what ‘please’ meant,

And in the USA they didn’t know what ‘the rest of the world’ meant!

When I read this mail few things are understandable, but the last statement, is really true and shocking. Oh God, why the upper people think that the lower people can’t come ahead. Why they always try to stop those people to compete them. But one thing is for sure, time will change, the developed economies will realize that the developing and under-developed economies will compete them one day and that day don’t seams to far.

When I was a kid, I always thought of going US and wanted to settle there, but the day by day I came to know about the US people mentality, I dropped this idea. I still prefer to go there, but now not to settle there, just to visit around the beautiful places all around the USA. And to earn some money too As people in US had enough money, so they can share it with other people too… They will not donate this but, we will work and earn that money for us.

And for the African people, I just say, future will be bright, food shortage will never be a problem. God is not that selfish, that he always ask same people to sacrifice. Eoupeans are seams to be smarter people and dominated the whole world.

Life in IT Sector

empty85 — Thu, 25 Feb 2010 19:00:01 +0000

Oh..What an interesting topic it is. Few might think, whats so interesting in this, as life in IT sector is same as other sectors too. May be for few, but majority of people from IT sector may agree with me, as this world is quite an amazing one. Few people enjoy it, few get frustrated here, few give up and few live with it, without thinking anything. So, it a salute to all the IT engineers who make it this facinating world. This is what I really enjoy, being an IT engineer with some experience, their is no boundaries of Time on you, if one want to work for more than 12 Hrs. in this sector….Oops, I mis-communicated you people, 12 Hrs is common for all the IT engineers. And most of the IT engineers work for more than 14 Hrs a day, but very less are productive.

I have seen people seating in their cabins and chatting with some or the other guy on the office communicator, even I used to do that. This is not bad, but if this becomes a habit, then its not bad, its worse. Nothing more worse can happen with you, you will exploit your own career on your own, if you are a beginner in this sector, and a victim of this habit, then even God can’t save you. As IT engineers don’t have any luck with them.

Well, the life in IT companies is cool, one will see good quantity of hot chicks early morning, frustrated seniors, laughing people, tensionless guys, chilling out couples, staring people, and many more varieties of species. Every day is a new day. Most of the people in a IT company smoke 5-6 times a day on an average. More you gain the experience under your belt more you smoke. More you work sincerely, more the people will shout on you. More you aredeserving candidate, less chance of getting ahead of people who are competing with you. If you are a girl, you might be lucky, but not on all occasions, there are many pshycos in this sector who hate girls.

But I love girls. they are the source of inspiration in such a tense environment, specially those who are in HR dept. Frankly speaking, you never see them tensed anytime, one can easily notice them and recognize them, the girl aged looking ladies, dressed well, looking hot, with lots of makeup, smiling face, and some or the other guy with them to listen to them. But, the whole company moves because of these ladies.

When I see such ladies all forget all my tensions, and work loads and enjoy the scene fully. They provide new energy to me, which makes me fully energized to work for more than 12 Hrs a day.

One more interesting thing here in this sector, the guy sitting in the next cubical is nothing to do with you and found two type of characteristics in him/her.

Either he/she daily says hello and start working and nothing else in the whole day except that morning hello, or nothing, no Hi Hello, he come inside, sits and starts working.

Why he this time, because, girls can’t come inside office and sit calm. they will surely look here and there to verify that the people near around them noticed her or not. Some do it silently, some do it publicly ….:But this is what guys also want too.

There are lot of other interesting parts associated with this IT sector’s life.

But one thing is for sure, more the hot chicks in the working environment, more enthusiasm in the team.

Some people might say its a distracting thing, but this is one which makes me work. Let me tell you a short and simple story of mine. I sits near a UI team which is full of hot chicks, when I am not able to analyze any problem, and proceed further, I took a round of whole UI team to see those girls, they makes my mind start working, its like fuel for my mind, which ignites everything in me. People please take it positively. Most of the people thing the other way. But taking everything positively makes your life easy. I am not saying that one should neglect the other side of the story, but before considering the other side, consider the positive side, which is much more happening then the other one.

So, this is me in IT sector. How I start my day and how it goes on.

Hello to blogging World

empty85 — Thu, 25 Feb 2010 18:18:30 +0000

Well, let me introduce myself first before I begin writing some rubbish things here about myself which few people may like and few may dislike. This is common human ideology, one can’t do anything about this. So let the people like or dislike, who cares until it din hurt someone. So I’ll try to write only things which are not going to harm anyone and personal to someone. This blog is dedicated to all people who believes to change and want to do something new.

So, here I am for you all.

Its Pradeep Kumar, born in a small town, or rather say small village Kumawas of small town Jhunjhunu. People might not know about Jhunjhun, but when I say Pilani or Khetri are part of this Distt. then many people may realize that which Distt. I am talking about. For those who are still in not near it. So for them let me tell you. Jhunjhunu is a small Distt. which is highly educated Distt. of Rajasthan situated on the border with Haryana.

My dad is Ex-Soldier and mother is Housewife.

As far as education is considered. I have completed bachelors in engineering in Information Technology stream. when I was a kid, I always think about PC’s, but my father not able to provide me one. But when I get a chance to deal with them, I was very happy, but instead of doing some good things with this machine, I used to play Games like Age of Empires and Counter Strike, which badly ruined my Report Cards. But I don’t have any regrets, as I had done what makes me happy. Anyways, its a long story about my college life which will be explained in the detail in the later sections in the very same blog.

Now, what I am doing is also an important thing which people like to know.

Well, I am a software engineer, working with Oracle Financial Services in Mumbai.

And its good to work on a Financial Product like FlexCube. I really enjoy working on it, playing with jason string, CoreJava, Oracle10g, Hibernate, ADF screens, its great.

Now what excites me. Hmmm.. I love all kinds of sports, weather I am watching them or playing them. It hardly matters who is playing, but if the players whom I like to see playing makes me crazy, Rooney, Sachin, Schumi, Neil, Rossi.. are few great sportsman whom I love to see. I am also a great fan of PC games.

Politics also one of the key area which makes some interesting news which I used to read a lot.

I also enjoy visiting places, chatting , gossiping with people.

When I am alone, I love to listen old Hindi songs.

One thing which I really hate, is when someone say bad about India.

Well thats all as of now, will keep on telling you other things about me and will reach the new heights here in the blogging world.

Mostly I’ll write about technical things, and few about entertainment. Hope you people enjoy and support me.

Note: My English is not that good, but still I’ll try to make it easy for everyone to understand.