This exercise is not particularly difficult, but the concepts are new.Can u Solve it

[liamsi]

date of join 1999 that makes more powerful than your previous friends ,no actually English is not my native Language, but i speak about 4 or 5 languages and i understand English with all its accents , but with all my respect i disagree with you when u said that that you find more than one native english people who find my post hard to follow ,
it is kind of clear unlike what you have said because i don t know how can i give some explanition to someone who doesn need help,and it takes him more than one page to understand , it could be easy to follow some helpful link ,and of course he d remember that this forum is the source ,

and i don t understand the way you end your replay all of you it is the same bad conclusion

like sayin Junk , or should look for other forum ,or you are a bit confusing...

[nuzzle]

Exercise 12.4: A predicate is a boolean-valued function with one parameter. Some languages use predicates in generic programming. Java doesn't, but this exercise looks at how predicates might work in Java.

This is not a new concept. It's called functional programming. But it's true that Java doesn't support it much. There was a suggestion to introduce so called closures in Java 7 but it seems to have been postponed. (C++ has closures in its upcoming standard and C# has had them for some time).

There have been attempts (not very successful) over the years to popularize the functional approach for Java. See here for example,

http://www.ibm.com/developerworks/ja...-fp/index.html

And here's a library,

http://commons.apache.org/sandbox/functor/

For those interested in trying a specialized functional language there's Clojure (which runs both on the JVM and the CLR) and F# which is a .NET language. Or even better Scala which is both functional and object oriented and well integrated with Java,

http://www.scala-lang.org/node/25

[nuzzle]

so you call David J. Eck junk he could probably have tought ur professors and you call him a junk

A forum is not well suited for general billboarding or personal blogging that's all.

Recommend the book when someone has expressed a specific wish or concern you feel it would satisfy. Or write a review if you feel it's very novel or special and invite to a discussion.

[ProgramThis]

i donno what yo r tryin to program ,ProgramThis ,you should Listen to ur friend when he said that i should have of read the rules Before Postin ,you should have respect the rules of discussion you can t sleep for 2 or 3 days and get along with a arguiment that has been open for ages

Please enlighten me and show me where it says in the rules for the discussion forum that I cannot "sleep for 2 or 3 days" and join a discussion? Oh, is this some sort of 'unspoken' rule from Malaysia? The 'argument', as you put it, has been going on for 2 days... hardly 'ages'.

to be a Java Expert which u think urself you , u have to be old enough , you can just come here and send like those laughin emotions , ur friends was tellin Dr David J. Eck works junk and u r laughin at him ,
u weep for ur friends and you course this Doctor work , u can make it personal i m here to help
and u r reactin like i have stolen ur girlfriend or somethin

So you have taken the information already freely provided by the good Dr, placed it on your own version of a web page, and are now promoting it. Why not at least link to the original author's page instead of proxying it through your site?

Once again, because you do not seem to understand the concept here, this is a site for people to ask questions. This is NOT a site for people to spam their favorite author's work. If you find that somebody has asked a question that the good Dr has solved, THEN you should post a link to the relevant piece of information that explains how to solve the problem.

[liamsi]

to solve the problem i ve got to get back to the previous post by nuzzle,this is not nuzzling
the way post ur comments has nottin to do with nuzzling ,when i said this is a new concept i didn t mean the exercise itself , i meant how people may find it that s why i have pointed to C++.
if u read the whole thing you wouldn t say that , i bet everybody understand what i was about except from you Members ,i bet you treat all people the same way ,i donno what you r tryin to prove but i think i can understand , like i said this is not personal so i don t care ,
i don t even understand why do u have the right to tell me about other links like Ibm and
common.apach and scala and i can 't ??
let me go back to the last post before u r tryin to accusin people u have to think about Silent is golden when u can t think about a good answer, becuz what he wasnt Dr is his work to be shared ,if it has a lot of sources people may come across it , like for example my country
if somebody don t get somethin i may edit this thing and try to write it an other way ,
the point is to make it so easy to be understood by not just native english speaker .
you all talk the same way like u r neighbours or roomates or studyin in the same place
i don t know it seems to me like you have been thought from one source and the same source
.i think if you want to understand somethin and trust it you have to look at it from different position .

[keang]

i bet everybody understand what i was about except from you Members

Look, if someone here or on any other web site disagrees with a post you've made then that's not unusual but when everyone disagrees with you and are presenting a common front in disagreeing with you then you have to accept that you are probably in the wrong or at the very least on the wrong site.

,i bet you treat all people the same way

Well we certainly try to be consistent.

i don t even understand why do u have the right to tell me about other links like Ibm and
common.apach and scala and i can 't ??

Because Nuzzle was posting useful links in support of his/her response to your post. A number of people have already told you it's ok to post links for this book if it is in order to answer a question someone has asked.

you all talk the same way like u r neighbours or roomates or studyin in the same place

I can't speak for the others but I've never met or had any communication outside this site with any of them. In fact I believe we are spread across several different countries.
What we do have in common is an understanding of what this forum is for and how people should use it.

[liamsi]

u r all from UK and Some of I guess is From USA And the more powerful Here i donno the one who was joined on 199 and u all wanna be like him ,and an other one who is somehow love to search over google and tell people what he think as an answer i think the name was Programmthis ,and yes i disagree with the 4 or 5 of you it is a small number ,cuz i know the truth that i m right and i was right like i was right when i told you that you have to look at things from different side ,like i believe you when u said that you guys don t have conversation or communication outside internet , that an other side you should look at thing , i mean social Life
,it s harder than Java Language more Complicated , and the way you talk prove that you have nothin to do with it

[nuzzle]

u r all from UK and Some of I guess is From USA And the more powerful Here i donno the one who was joined on 199 and u all wanna be like him ,and an other one who is somehow love to search over google and tell people what he think as an answer i think the name was Programmthis ,and yes i disagree with the 4 or 5 of you it is a small number ,cuz i know the truth that i m right and i was right like i was right when i told you that you have to look at things from different side ,like i believe you when u said that you guys don t have conversation or communication outside internet , that an other side you should look at thing , i mean social Life
,it s harder than Java Language more Complicated , and the way you talk prove that you have nothin to do with it

Incomprehensible ramblings in a style that doesn't fit the situation. I don't think anyone would consider that an example of good social skills. And you can stop crusading now. It's been duly noted that you consider these lecture notes a gift from heaven, a must read for every ambitious Java developer.

[dlorde]

Hopefully, now he's decided that we're all social inadequates, he'll realize this forum isn't what he thought it was, that there's little point wasting his time here, and he'll stop wasting our time.

Alternatively, we can just get on with normal forum business and leave him to his ramblings.

Hofstadter's Law: It always takes longer than you expect, even when you take into account Hofstadter's Law...
D. Hofstadter

[nuzzle]

Alternatively, we can just get on with normal forum business and leave him to his ramblings.

To me this thread was valuable because it brought my attention to Scala which is both object oriented and functional, and well integrated with Java. It seems like a nice choise if you want to improve as a programmer in general.

In addition to the link I gave in a previous post I recommend this,

http://drdobbs.com/architecture-and-...allout-mostpop

[dlorde]

In addition to the link I gave in a previous post I recommend this,
http://drdobbs.com/architecture-and-...allout-mostpop

Thanks nuzzle, it's an interesting interview - and a long time since I browsed Dr Dobbs; I used to get the journal many years ago...

]Who dares to teach must never cease to learn...
J.C. Dana

[nuzzle]

Thanks nuzzle, it's an interesting interview - and a long time since I browsed Dr Dobbs; I used to get the journal many years ago...

There aren't many programming magazines you can buy in the stores these days. I guess they all went to Mexico.

I suppose it's because of a lack of public interest in programming. There are no hobby programmers anymore, just professionals and academics. And as the exception that proves the rule, Linux affectionados. They can still buy a magazine in a store but that's not quite the same because Linux is not a programming language.

It was very different during the Java heydays. There were at least three different Java journals on the shelves and people were fighting to get their hands on a new issue. Java knowledge could even get you laid. Sadly, these days are long gone and I wonder what could ever spark another surge of interest in programming the way Java did.

I see a pattern here; First the IBM PC and then Java. What do they have in common? They were a platform! The IBM PC wasn't just a computer, it was a platform. Java wasn't just a language, it was a platform.

So what's next? Well, honestly I don't know but I'm sure it will have something to do with a new platform.

[dlorde]

Java knowledge could even get you laid.

Dang! I knew I'd missed something... I wuz too busy being a geek

So what's next? Well, honestly I don't know but I'm sure it will have something to do with a new platform.

It's getting complicated - platforms are merging; everything is a computer now, with multi-media and multi-source access. My new Samsung TV has it's own wireless web interface for streamed audio/video, with a browser, custom Twitter and Facebook areas, and downloadable apps (mostly pointless junk). You can plug a PC in, but you don't really need to. It's like a 37" iPad...

On a visit to the NASA space center, President Kennedy spoke to a man sweeping up in one of the buildings. "What's your job here?" asked Kennedy. "Well Mr. President," the janitor replied, "I'm helping to put a man on the moon"...
Anon.

[liamsi]

i don t get i have been facin alot of issues but they don bother me ,but sometimes i don t get how humain being thinks , i don t get i m here to offer help n provide some java students with excercises ,but i don t get the way you people speak , it s very wierd you r members of this webite you should be a very friendly, people this is business ...this is the first concept you should have learnd .