How do I create methods and sub-methods?

Question

1.00/5 (1 vote)

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I know how to create a method:

Java

public/private static/none dataType/void methodName(arguments) {
/*
 * Code in here
 */
}

I was wondering, if I used this:

Java

public static void setStat() {

}

I could have a method that branches off of

Java

public static void setStat() {

}

like so:

Java

Class.setStat().attack(5);

If this is possible, how would I do it?? Could you give me a code example??

EDIT:

I also want to do this:

Java

Class.addStat().attack(5);

So that I can either add or set the stat. I am also confused on what to return in

Java

public static void setStat() {

}

Please provide an example and not just an explanation. I learn from examples so that I know what I'm looking for.

What I have tried:

I have tried looking on google, but all their tutorials seem way too complex and take up lots of time.

Posted 5-Dec-16 15:19pm

NickTheDev

Updated 6-Dec-16 20:12pm

v2

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Comments

Peter Leow 5-Dec-16 23:06pm

The closest you can get is the new lambda expressions included in Java Platform Standard Edition. Read http://www.oracle.com/webfolder/technetwork/tutorials/obe/java/Lambda-QuickStart/index.html

3 solutions

Solution 2

That's called method chaining, and must use the technique suggested by Richard. See, for instance: how to achieve method chaining in java? - Stack Overflow[^].

Posted 5-Dec-16 22:03pm

CPallini

Solution 3

public static void disp(){

}
class.disp(5);

Posted 6-Dec-16 20:12pm

Paresh Kalsariya

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Richard MacCutchan · Accepted Answer · 2016-12-05T21:56:00

Solution 1

Java

public static void setStat() {
 
}

Class.setStat().attack(5);

No that will not work, because setStat does not return anything. In order to call a sub-method setStat needs to return an object reference.

Posted 5-Dec-16 21:56pm

Richard MacCutchan

Comments

CPallini 6-Dec-16 4:01am

5.

NickTheDev 6-Dec-16 21:48pm

So, what would I return? Also, is there a way of checking if the method was referenced again, that it would not allow me to use it? Example:

Class.setStat().setStat().setStat();

I don't want ^^^ to happen. I want to be allowed to reference it once, and not be able to reference it over and over again. Also, what would I do with the attack method? Do I have to somehow make a reference back to setStat() or simply return the value I set as the attack?

Richard MacCutchan 7-Dec-16 3:50am

I already said in my answer, it needs to return an object reference. You can only call a method on a class name for static methods, or an object reference for ordinary methods. In your example above, setStat must return a reference to an object of the class that contains a method named attack.

If you do not understand the basics of the Java language you are not going to get very far. I suggest you go to Lesson: Classes and Objects (The Java™ Tutorials > Learning the Java Language)[^] and study it in detail.