Guys Pleaseeeee I Need To Understand This Java Thing! - Programming - Nairaland
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Help Me Solve This Java / Java Programmers; I Need Your Help Urgently Pleaseeeee / Improve The Speed Of This Java Code. (2) (3) (4)
| Guys Pleaseeeee I Need To Understand This Java Thing! by whyohme: 6:00pm On Dec 22, 2014 |
I'm VERY NEW to programming, and I want to learn it. Going through some sites, I was advised to learn Java first. (I have like 20% HTML knowledge already). I've been doing and running the Java "hello World program" but I'm just finding something crazy about the program. Please I'd like your Nairaland programmers (gurus) to please walk me through the process of creating a Java Hello World. java program. Then maybe advice me on more things to learn with. I've tried learning with http://docs.oracle.com/ java course, but their some things I think I still need "some sort of personal touch" to learn... and I'm REALLY WILLINGLY TO LEARN. Tip -- I'd like to create an Android app... but from the SCRATCH. |
| Re: Guys Pleaseeeee I Need To Understand This Java Thing! by ahmmyreal(m): 8:23pm On Dec 22, 2014 |
You want to write Android apps? Learn Java first. Want to learn Java on your own? Read Java how to program by Deitel and Head first Java. Also download Java videos from TheNewBoston.com |
| Re: Guys Pleaseeeee I Need To Understand This Java Thing! by whyohme: 8:29pm On Dec 22, 2014 |
ahmmyreal:Thanks ahmmyreal.. it's not that I'm not learning but I've got this HUGE problem of cmd error right now. And in fact, I posted an update here -- https://www.nairaland.com/2057428/please-what-should-im-getting But in order to avoid you clicking the link, lemme just repost it here: I've been trying for the past four hours to get over the error message I'm getting from cmd, when trying to compile -- a HelloWorldApp.java. I've gotten all the steps but I haven't passed this step: Where I've to add this code -- javac HelloWorldApp.java to compile the HelloWorldApp.java I keep getting this error message from cmd -- C:\MLee>javac HelloWorldApp.java 'javac' is not recognized as an internal or external command, operable program or batch file. C:\MLee>C:\jdk1.8.0\bin\javac HelloWorldApp.java The system cannot find the path specified. C:\MLee> javac HelloWorldApp.java 'javac' is not recognized as an internal or external command, operable program or batch file. C:\MLee>C:\jdk1.8.0\bin\javac HelloWorldApp.java The system cannot find the path specified. C:\MLee>jdk1.8.0\bin\javac HelloWorldApp.java The system cannot find the path specified. C:\MLee>C:\ACER\jdk1.8.0\bin\javac HelloWorldApp.java The system cannot find the path specified. C:\MLee>C:\myjava\jdk1.8.0\bin\javac HelloWorldApp.java The system cannot find the path specified. C:\MLee>C:\Program Files (x86)\jdk1.8.0\bin\javac HelloWorldApp.javac 'C:\Program' is not recognized as an internal or external command, operable program or batch file. C:\MLee>C:\Files\jdk1.8.0\bin\javac HelloWorldApp The system cannot find the path specified. C:\MLee>C:\jdk1.8.0\bin\javac HelloWorldApp The system cannot find the path specified. C:\MLee>C:\jdeo Please assist me... |
| Re: Guys Pleaseeeee I Need To Understand This Java Thing! by luksybee(m): 9:33pm On Dec 22, 2014 |
Hook me up on whatsapp with 080xxxxxxxx |
| Re: Guys Pleaseeeee I Need To Understand This Java Thing! by Theorix(m): 9:41pm On Dec 22, 2014 |
Make sure u change directory to point to were d javac is installed |
| Re: Guys Pleaseeeee I Need To Understand This Java Thing! by Nobody: 10:03pm On Dec 22, 2014 |
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| Re: Guys Pleaseeeee I Need To Understand This Java Thing! by Nobody: 10:03pm On Dec 22, 2014 |
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| Re: Guys Pleaseeeee I Need To Understand This Java Thing! by GodMode: 10:06pm On Dec 22, 2014 |
Download an IDE for java... eclipse or netbeans... |
| Re: Guys Pleaseeeee I Need To Understand This Java Thing! by whyohme: 10:19pm On Dec 22, 2014 |
I've downloaded IDE for netbeans GodMode: |
| Re: Guys Pleaseeeee I Need To Understand This Java Thing! by whyohme: 10:20pm On Dec 22, 2014 |
Theorix:How?? Please explain better! Cos I've tried changing the directory as in -- C:\Program Files (x86)\Java\jdk1.8.0_25\ But it tells me 'C:\Program' is not recognized as an internal or external command, operable program or batch file. |
| Re: Guys Pleaseeeee I Need To Understand This Java Thing! by whyohme: 10:20pm On Dec 22, 2014 |
luksybee:Sorry I'm not on WhatsApp |
| Re: Guys Pleaseeeee I Need To Understand This Java Thing! by whyohme: 10:26pm On Dec 22, 2014 |
I also tried this -- C:\Program Files (x86)\Java\jdk1.8.0_25\bin\javac HelloWorldApp.java and this -- C:\Program Files (x86)\Java\jdk1.8.0\bin\javac HelloWorldApp.java Also this -- C:\Files (x86)\Java\jdk1.8.0\bin\javac HelloWorldApp.java And this -- C:\Program Files\Java\jdk1.8.0\bin\javac HelloWorldApp.java I've also created a PATH is system for JDK1.8.0 as in -- C:\WINDOWS\system32;C:\WINDOWS;C:\Program Files\Java\jdk1.8.0\bin but the whole thing is still MESSED UP! And please I'm still a beginner!! |
| Re: Guys Pleaseeeee I Need To Understand This Java Thing! by emmyvet(m): 10:44pm On Dec 22, 2014 |
whyohme:Sorry! You are getting the error maybe your aren't specifying the correct path where your .java is . I will advice you use netbeans for start you code and run your program on netbeans then with time get cool videos on youtube to assist you! |
| Re: Guys Pleaseeeee I Need To Understand This Java Thing! by GodMode: 10:46pm On Dec 22, 2014 |
whyohme: Run it using netbeans... 1 Like |
| Re: Guys Pleaseeeee I Need To Understand This Java Thing! by ahmmyreal(m): 11:40pm On Dec 22, 2014 |
1. Open Your my Computer. 2. Goto System Properties. 3. Open Advance system settings.(for win Vista/7/8/8.1/10) 4. Goto Advanced Tab and Open Environment Variables. 05. Then Click on New under User variables and Set Variable Name : Path and Set Variable Value : C:\Program Files \Java\jdk1.7.0_25\bin (The Directory In which your JDK is installed. Yours might be different from mine) 06. And Click OK , OK and that’s it. It will be then Set. |
| Re: Guys Pleaseeeee I Need To Understand This Java Thing! by asalimpo(m): 12:13am On Dec 23, 2014 |
ahmmyreal: |
| Re: Guys Pleaseeeee I Need To Understand This Java Thing! by asalimpo(m): 12:14am On Dec 23, 2014 |
ahmmyreal: you shouldnt create a new variable . For windows 7 and earlier, there,s a path variable under system properties. Click it then copy the full path to the jdk compiler and paste it at the end of the value textfield,with other values there. End with a semi colon. The path to the jdk should be rootdrive: /program files/.../java/java-version/bin/ |
| Re: Guys Pleaseeeee I Need To Understand This Java Thing! by whyohme: 12:38pm On Dec 23, 2014 |
asalimpo:My current PATH is -- C:\WINDOWS\system32;C:\WINDOWS;C:\Program Files\Java\jdk1.8.0\bin And I'd try what you suggested |
| Re: Guys Pleaseeeee I Need To Understand This Java Thing! by asalimpo(m): 2:03pm On Dec 23, 2014 |
after editing the Path variable ,in the Advanced settings, restart your system before tryingna recomplie again. The settings maynt register if u dont reboot ur system. |
| Re: Guys Pleaseeeee I Need To Understand This Java Thing! by GodMode: 3:00pm On Dec 23, 2014 |
whyohme: - Go to start - type cmd and click it to run command prompt. - after cmd loads type javac and press enter. Tell us if u get an error message or not. |
| Re: Guys Pleaseeeee I Need To Understand This Java Thing! by whyohme: 4:24pm On Dec 23, 2014 |
How can I ever thank you guys? You just did the BOMB!!!!!! I've been on it for like -- 20 hours... and within few minutes (with your help) I'm done!! Thanks guys!! 2 Likes |
| Re: Guys Pleaseeeee I Need To Understand This Java Thing! by haibe(m): 7:00am On Dec 24, 2014 |
whyohme:u can start using eclipse instead of Command line, it's better |
| Re: Guys Pleaseeeee I Need To Understand This Java Thing! by asalimpo(m): 7:47am On Dec 24, 2014 |
haibe:i would advice otherwise. Stay with command line until you're conversant with it before switching to an ide. Know how to compile a class compile a package jar files put libraries in your classpath deploy complete apps use basic command switches e.g dir, dir <extension>, copy etc (on windows) |
| Re: Guys Pleaseeeee I Need To Understand This Java Thing! by haibe(m): 8:50am On Dec 24, 2014 |
asalimpo: ok just that I feel it may discourage new users as it's difficult to identify errors using command line |
| Re: Guys Pleaseeeee I Need To Understand This Java Thing! by asalimpo(m): 10:21am On Dec 24, 2014 |
haibe: it's a rite of passage thingi so tht they know what's agwan under d hood. And know how to drop down to tht level should d need ever be. |
| Re: Guys Pleaseeeee I Need To Understand This Java Thing! by trytillmake(m): 2:13pm On Dec 29, 2014 |
ok let me drop my little contribution i think the book to get u started is Learn to Program with Java: John Smiley[he is a prof and the book was written as if he is in a classroom teaching a groupof students within a period of weeks].I guarantee u if u can go through it uwill start writing java in no time Learn to Program with Java: John Smiley download here [url]http://bookzz.org/s/?q=Learn+to+Program+with+Java%3A+John+Smiley&t=0[/url] [it is an epub version u can convert to pdf with online tools if u cant drop yr mail i will send u the pdf version] Also to get u started free again try this site http://www.homeandlearn.co.uk/java/java.html u will get all the java tutorials in no time If u want videos get them free here https://www.udemy.com/courses/search/?q=java&p=1&price=price-free&view=list So now no more excuses, i should think yr needs have been met |
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