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Here I continue my Java Video Tutorial by covering methods, or functions in Java.
I spend a considerable amount of time on those things that tend to confuse people who are learning Java. I review how class variables differ from local variables and provide numerous examples of methods.
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If this is not complex thing.. than I am a real amateur.
Best method to learn java!
what does int guessResults = 1 and randomGuess = 0 do in this function/statement?
after watching your first your tutorials.I think you are more talented than justin bieber.
Wait, what exactly do methods do at around 1:35?
Thank you for making these Videos, good sir….. :3 I'm a C Programmer who wants to buff up his skills in Java….. :3 They're very informative, and make it easier to understand Java….. 🙂 (It also doesn't hurt to have a background in C…..) 😀 Have a good day, ok…..? :3
Big thanks to you Derek for doing this, these videos are excellent. I took Java as a class about 5 years ago and now finding myself having to urgently refresh my memory. Been programming in other languages during the time but Java has its "quirks".
You're a hero 🙂
Shouldnt "Global 3.141559" be written before "Local 3.0" at 5:00 when you run the program? Can someone explain why its in the opposite order?
good for beginners but little fast!! thanks
why do you return "1" if you add 1 and 2 it's 3
Derek,
I know some of these videos are a bit old and not sure if you still reply to these Comments.
I have gone through many of your Videos (PHP, WordPress, JAVA. and Andriod.
As a matter affect My first App was written in JAVAFX hibernate with sql for Management.
I did get your verizon email from one of the video but didn't feel comfortable sending you email directly.
Just wanna say Thank you So Much for all that you are doing and did..
🙂
Can you elaborate about the math library of java programming language? If you do that I will kiss you
one thing i didn't understand is at 5:00 the first value that was printed in 3.0 not 3.14159 ,why?
I had one or two other questions too lemme try to remember em
Dang that was a fast reply, i didn't even notice it til now.
Anyway, I don't quite understand how the static methods work… so ya, how do they work?
Derek, do you still respond to old videos?
But if I write -1 the program doesn't give a correct answer :>
Hello, Could you please explain to me what this is "guessResult = checkGuess(randomGuess);"
Especially why is it like this: "checkGuess(randomGuess)"
Thank you!
Mystery. At 3:46. How did he correct the comment code? Pointer is swirling around somewhere towards the bottom when he does something and the double forward slash fixes itself. Hmm. I tried Ctrl-s and I tried Ctrl-Shift f. Looks like an autoCorrect. How'd it do that?
which software do you use to implement java prog.
Hi, Thank you very much for posting the videos. Can you please explain 1:37 "if you ever want to create a method that's not going to be part of a class definition". It's a bit confusing as a class encloses all the methods.
Thanks again videos are very helpful.
is it compulsary to initialize randomGuess?we can skip that statement?
OK i've got a question: in this code random number will be showed in the beginning of executed code. how can i generate a random number without printing it on the console board? i mean to hid it or something else
P.S: Great lessons really like them learnt so much, thanks dude!
This "Well hello internet" gets me every time. Great tutorial.
You are a brilliant teacher!
4:57 in the console, why did the print line for local return first, and not the print line for global?
what if someone would have typed -1 ?
Do you have a video where you explain using 'this.' with variables? That always confuses me.
public static int getRandomNum ()
{
randomNumber = (int)(Math.random() * 51);
return randomNumber;
}
public static int checkGuess(int guess)
{
if(guess == randomNumber)
{
return -1;
}else {return guess;}
Im getting a cannot convert a double into an integer with the return randomNumber; and once I add (int) before randomNumber; then it allows me to run the program (neon 2.0) why did that not error for you?
randomNumber = (int)…….
return (int) randomNumber;
That probability was 0.98*0.98*0.02. How lucky
What happens when you replace all the 'd' with 'myPi' at 8.08 in this video ?
Can we actually declare a variable in main which has same name as the class variable
Hello and thanks for this amazing tutorial Derek! I had a question, in the last example of guessing the random number in the while loop I tried using while(1) instead of while(guessResult != -1) and I got an error message saying can't convert from int to boolean. Why I did this was if I entered -1 instead of a number between 0 to 50 it directly printed the random number generated (which is due to the guessChecker function if I'm not wrong) So my question was is there a way I can make the loop run again and again until the correct number is guessed without actually using != int in the while loop and what exactly is this 'can't convert from int to boolean' error message? Sorry if it's a silly question and thanks again!
Can you have multiple main methods and will they be execute at the same time
Can you have multiple main methods and will they be execute at the same time
Do you have any videos on Spring Boot too? I really need to learn Spring Boot as quickly as possible. Thanks
I type along as you type but i acnt figure out why i get an error at getRandomNum() {…}
method
"Type mismatch: cannot convert from double to int"
I did cast it to be an int. Just like you did. I an wondering why this error occurs
Here is the code:
public static int getRandomNum() {
randomNumber = (int) (Math.random() * 51);
return randomNumber;
}
Can you have different methods/functions in separated .java/.cass or do you need to write them all in the same .java/.class?
derek what version of java is in this series.
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