Lets Discuss Fundamental Java with Shakiz

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@past herald

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yes

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lets continue here

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1 sec

a method is like a

idk how to explain

[dusky sigil]

Im glad to help out if you have a quick question and conclure isnt here

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oh hey

ty

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okay shakiz

what do you think of when I say eat

[buoyant harbor]

big boy

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a method is the like what you do with an object ?

[buoyant harbor]

show an example with an explanation

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like putting on a shirt ?

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or eating a plate

object is the plate

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maybe

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and the act of eating it is the method

o.o

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write down the steps of eating

(generally)

[buoyant harbor]

what about the food?

[lament widget]

doesnt have to be perfect

[past herald]

-pick up the spoon
-put the spoon inside the food (idk how to describe this LOL)
-etc

is that what you meant ?

[lament widget]

yeah

could thats enough

in java we might be able to create an arbitrary representation of that

void eat() {
  spoon.pickUp();
  Food food = new Food("pizza cake");
  food.accept(spoon);
}

[past herald]

will this code actually work ?

[lament widget]

no

but its just a textual example

[past herald]

oh yeah i get it

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so back to your example

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this

whenever I say eat

you'd in principle, go through all those steps right?

[past herald]

yes

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yeah

now in java

we could simple do smtng like:

void eat() {
  spoon.pickUp();
  Food food = new Food("pizza cake");
  food.accept(spoon);
}

@Override
public void onEnable() {
  eat();
}

of course that'd be inside a class

but whenever you use eat()

you'd in reality, go through all the instructions of the function/instruction eat, which would be line 2 to 4

[past herald]

yes and that's what am trying to do on the plugin

[lament widget]

yeah

now let me ask

do you prefer
1 or 2?

1:

void eat() {
  spoon.pickUp();
  Food food = new Food("pizza cake");
  food.accept(spoon);
}

@Override
public void onEnable() {
  eat();
  eat();
  eat();
}

2:

@Override
public void onEnable() {
  spoon.pickUp();
  Food food = new Food("pizza cake");
  food.accept(spoon);
  spoon.pickUp();
  Food food = new Food("pizza cake");
  food.accept(spoon);
  spoon.pickUp();
  Food food = new Food("pizza cake");
  food.accept(spoon);
}
```?

[past herald]

1

cuz way more simple and easier to read

[lament widget]

exactly

thats good enough of a reason to prefer methods

(of course there are others as well)

so lets go through classes

[past herald]

yes

arent they the same thing ?

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methods and classes are very different

[past herald]

but like a class is a method + other things

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yes

a class usually contains variables and methods

but they're nonetheless different

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so like a class groups all the methods

?

[lament widget]

hmm well

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and they can have shared variables

[lament widget]

let me show an example of a class

class Shakiz {
  void eat() {
    System.out.println("Shakiz is eating, yum yum!");
  }

  void drive() {
    System.out.println("Shakiz is driving, don't distract him!");
  }
}```

[dusky sigil]

a class can be something like "bottle". you can make a new bottle and fill it using methods. basically anything you would call an object could be a class

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Shakiz

have you thought of that you can write something like:
Shakiz variableName = new Shakiz();

?

or well even simpler

String x = "a";

[past herald]

no

like

idk why

i have read some threads about it because i was confused

but didnt understand it

[past herald]

yes yum yum

[lament widget]

did you ever figure out why:

@Override
public boolean onCommand(CommandSender sender, Command command, String label, String[] args) {
  String x = "a";
  Player player = (Player) sender;

  //so have you ever thought why you can do this:
  player.getName();

  //but why you cannot do this:
  x.getName();
}```

you can even try that code in one of your commands

[past herald]

x is a string but player is an object

right ?

[lament widget]

nope

[past herald]

:o

[lament widget]

x also references an object

a string object

so why is it that we can't run x.getName();

give it one more try

[past herald]

umm

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well

try add a class

called Shakiz

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wait

so like

Player is a method/class ?

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is it a class or a method?

[past herald]

intensive confusion

CLASS

!

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uyes

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also is String

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correct

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but String has no method

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it does

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named .getName();

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yes

thats correct

now I want you to try something

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pogchamp

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create a class called Conclure

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yes

[dusky sigil]

Methods: swingBanHammer(), helpPeople() //shakiz ignore this 😛

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now try this in your onCommand:

@Override
public boolean onCommand(CommandSender sender, Command command, String label, String[] args) {
  String x = "a";
  Player player = (Player) sender;
  Conclure conclure = new Conclure();

  player.getName();
  x.getName();

  conclure.getName();
}```

[past herald]

ayo why do i understand this and not other code

[lament widget]

if you added a class called Conclure

line 5 should work

(assuming you import it)

however the second to last line should give you an error right

[lament widget]

yeah

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the class conclure doesnt have any method called .getName();

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now go back to Conclure

yuh

and put

public String getName() {

}

what happens?

[past herald]

it fixes the error

but does nothing

[buoyant harbor]

You teaching shakiz on how to make a constructor?

[lament widget]

yeah shakiz

now notice

if you turn it

public static String getName() {

}

what happens?

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error

idk why this time

wait nvm

am just stupid

[lament widget]

well

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no error

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you should get an error at conclure.getName()

[past herald]

but it didnt change anything ?

uhh

[dusky sigil]

hover over the getName with your mouse

it should give you a description of whats wrong

[lament widget]

oh yeah forgot about shitty Java

[dusky sigil]

the method is static, which means you can access it over the class name if the class has been imported

so it tells you you wouldnt wanna access it over the object

[past herald]

oh i see

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yeah

[dusky sigil]

so if you capitalize the first 'C' in conclure it works

[past herald]

yes that's what i did

and it worked

[lament widget]

Conclure.getName() would refer to that you run the method from the class

[past herald]

so like this line isnt needed anymore ?

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anyways shakiz lets sum up this a bit now

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dont delete it

we're not done yet

so we can say

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ok

[lament widget]

that variables seem to have methods depending on the class you determine them of

for instance

String x = "a";
x.replace("a","b") works on x

because x has the type String, and in the class String.java a method replace() is declared/defined/listed

same goes for Player

it has the method getName()

[past herald]

but String doesnt

[lament widget]

exactly

which is why it yields an error

from now on

I will refer to static methods as functions

and normal (non static) methods as simply methods

shakiz, let me now introduce you to types

of course we can see String.java as a class right

because it literally is a physical class that exists within java

[past herald]

hmm but doenst that mean that this should work ?

[lament widget]

we'll come back to that later

[past herald]

because getprefix is static

[past herald]

ok

[lament widget]

shakiz, let me now introduce you to types
of course we can see String.java as a class right
because it literally is a physical class that exists within java

you agree on this? right?

[past herald]

yess

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however

String can also be seen as a type

and if we know that the variable x is of type String, then we also know what methods the type String has

which is replace, replaceAll, toString, hashCode... etc

we even tried with creating our own type Conclure

so what are classes more than just classes?

[past herald]

i dont understand the question

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can we call a class something else?

[past herald]

well if a String is a class and a type then yes ?

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yup

[past herald]

so every class could be a type ?

[lament widget]

yes

every class is a type

now there are some rather few exceptions

namely int, boolean, long, double, char, byte, short, float

as you know

its fully possible to to write any of these:

int x = 1;
double y = 2.2d;
float f = 321.423f;
short s = 1;
char c = 'a';
byte b = 1;
boolean a = true;

however have you ever thought that there are no methods to call on a

or x for that part

you cant write
x.getName()

or x.toString()

[past herald]

yeah now that i think about it

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thats because int, boolean, long, double, char, byte, short, float are all primitive types

they have no class

[past herald]

ok i get it

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yeah lets go back to your original problem

I think its enough for today

we can continue tomorrow

[past herald]

ok

[lament widget]

#help-development

post it there

[past herald]

so i have to change that from String ?

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Lets Discuss Fundamental Java with Shakiz

[past herald]

pog

import org.bukkit.plugin.Plugin;
import org.bukkit.plugin.java.JavaPlugin;

public class CustomChat extends JavaPlugin {
    @Override
    public void onEnable() {

        this.saveDefaultConfig();
        this.getServer().getConsoleSender().sendMessage("§DCustomChat have been Loaded!");

    }
    @Override
    public void onDisable(){
        this.getServer().getConsoleSender().sendMessage("§DCustomChat have been Disabled!");

    }
    public static String getprefix(CustomChat plugin){

        String prefix = plugin.getConfig().getString("prefix");
        return prefix;
    }

}

import online.shakiz.CustomChat.CustomChat;
import org.bukkit.command.Command;
import org.bukkit.command.CommandExecutor;
import org.bukkit.command.CommandSender;
import org.bukkit.plugin.Plugin;
import org.bukkit.plugin.java.JavaPlugin;

public class PrefixTest implements CommandExecutor {
    @Override
    public boolean onCommand(CommandSender sender, Command cmd, String label, String[] args) {
        CustomChat customChat = new CustomChat();
        sender.sendMessage(CustomChat.getprefix(customChat));
        return true;
    }
}

hey , so i was learning for my test due tomorow and had my laptop open then i found fix for the code i showed before.

tried to use what conclure showed before

now this will be very useful cuz i can create multiple utils and use them on the code

and i also kind of see why use capitalized letters in start

of classes

[buoyant harbor]

fix yo class method name

[past herald]

:o i just did it

damn what conclure said makes sense now

i just made the CustomChat => customChat and removed "static" from the class

[dusky sigil]

Conclure is good at Java. of course it makes sense 😄