DISCUSSION: Beginning with Java

Hi,
good for some basic starting, but for those intresed in a dive in the sea of java programming on linux go to tutorials at sun.java.com and start hunting.

It is best to download jdk for linux from sun and code in vi/vim/gvim and compile and run from console.

Beginners shall have a great time deciphering the myteries. Do also remember to view the API of your specific jdk version download at sun. The API is what i will call the java programmers bible.


Happy learning.

Originally Posted by lmellen I've worked all the example programs up to class moon.The class moon program won't compile. I get: ex6.java:16: cannot resolve symbol symbol : method readline() location: class java.io.BufferedReader Then there is a ^ under the first new in the following line: String strA = new BufferedReader(new InputStreamReader(System.in)).readLine(); Just wondering why it won't compile. No big deal, but a reply would be interesting.-- Thanks- Larry (I haven't been able to solve this problem)

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first have you copy pasted teh moon d\code and tried it out bcos it works i have tried that with jdk 1.5 version it compiled perfectly

if the error is still there just try to resolve the method bcos readline() is a method availbale in BufferReader , so check first check by just calling by BufferReader object

linux documentation

Very good article. As a learner of Java, this is helpful for me.

This will be helpful for run an applet program
appletviewer filename.html

Anyone building apps for IMG networks should check out diameter IMS it's used in so many apps. I just started building with it.

Originally Posted by then Hi Well written article , bad formatting though. Had a tough time reading. A couple of spaces and some para-breaks would be welcome. regards theN

When's the update?

are java commands in linux different from the java commands in windows?

Originally Posted by AeonX are java commands in linux different from the java commands in windows?

99% of the time, no, however there may of course be certain situations where a program has been written for linux which will not compile/run on windows because some platform-specific code exists - it could be something as simple as a file location - a hard-coded /home/me/file.txt ain't going to get you far in windows.

Read my tech blog for User Authentication using servlet filters

Great article for the java begineers

When you test b == 0, you declare the b statement be b = a - c instead of b = c - a

Considering a squared plus b squared equal c squared, C is always larger than A or B,
wouldn't this fact mitigate the need to test either A or B for a negative value? The
text book example of a right triangle is a=3, b=4, c=5; squared, 9=25-16 and 16=25-9

Any number squared becomes a positive. You only subtract a smaller square from a
larger square. It should be impossible for the difference to ever be a negative
value.

Originally Posted by danliston Considering a squared plus b squared equal c squared, C is always larger than A or B, wouldn't this fact mitigate the need to test either A or B for a negative value?

There is nothing in the code that constrains C to be the hypotenuse (the side opposite the right angle, i.e. the longest side). Suppose the user enters a=5, c=3.

I have been learning Java through Udemy lately. Anyone have a recommendation for applying Java to mobile development?
Im really loving this Java stuff a lot, and looking forward to learning and applying it even more!!! Maybe I can develop
my own mobile app to help my students learn physics!!!