Inheritance or encapsulation or delegation ? what should I learn to understand the below code?

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What`s the benefit of writing the code in a way below: or what should i learn to understand it? give me some link to some tutorials plz. thx)))

class ClassOne implements SomeInterface {
   ClassTwo  ct = new ClassTwo ();
   public boolean someMethod(){
         return ct.someMethod();
   }

    public static void main(String[] args) {
    }
}


interface SomeInterface {
	boolean someMethod();
}


class ClassTwo implements SomeInterface {
	public boolean someMethod()	{
	    return true;
	}
}

What I have tried:

read about delegation inheritance encapsulation

Posted 13-Feb-18 17:00pm

david salaman

Updated 13-Feb-18 22:20pm

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PIEBALDconsult 13-Feb-18 23:10pm

You need to master the fundamentals first.

3 solutions

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vishaljamdagni · Accepted Answer · 2018-02-13T19:02:00

Well, in order to understand as to what's happening in the above code just spend some time on the basics of OOP first or if you have a bit of background of it and are still not able to grasp it then, I'd recommend that you get Kathy Sierra's SCJP complete guide the best would be to get of java se 8. But if you're not willing to spend to get it here's a reference for java se 6 https://iamgodsom.files.wordpress.com/2014/08/scjp-sun-certified-programmer-for-java-6-0071591060.pdfpdf.
Spend some time reading it properly and most of your doubts would get cleared after 1 or 2 readings.
Hope this helps.

CPallini · Accepted Answer · 2018-02-13T22:16:00

Solution 2

The above code shows all the concepts you mentioned.
You have to grasp both the OOP principles and the Java programming language in order to understand the code.

Posted 13-Feb-18 22:16pm

CPallini

Richard MacCutchan · Accepted Answer · 2018-02-13T22:20:00

Solution 3

Go to The Java™ Tutorials[^], where all these concepts are clearly explained.

Posted 13-Feb-18 22:20pm

Richard MacCutchan