[Polymorphism]

In the given code snippet, which feature of object‑oriented
programming concept is being exhibited by the
substring() method?

String s = "sandwich";

System.out.println(s.substring(4));
System.out.println(s.substring(1,4));

Question

[Polymorphism] 

        In the given code snippet, which feature of object‑oriented 
        programming concept is being exhibited by the 
        substring() method?
    

    

String s = "sandwich";

System.out.println(s.substring(4));
System.out.println(s.substring(1,4));

Accepted Answer

The feature exhibited is: Method Overloading (Compile-time Polymorphism)
    

    

        Understanding the Code:

        
            The String class provides multiple versions of the 
            substring() method.
        

        Two Different Method Calls:

        
s.substring(4)
s.substring(1,4)
        

        Meaning of Each:

        

            
                Method Call
                Meaning
            

            
                substring(int start)
                Returns substring from index to end
            

            
                substring(int start, int end)
                Returns substring from start to end‑1
            

        

        Output Explanation:

        
            
                s.substring(4) → "wich"
            

            
                s.substring(1,4) → "and"
            
        

        What is Method Overloading?

        
            Method overloading means:
        

        
            Same method name
            Different parameter list
        

        
substring(int start)  
substring(int start, int end)
        

        
            Both methods have the same name but different parameters.
        

        Type of Polymorphism:

        

            
                Polymorphism Type
                Description
            

            
                Compile-time Polymorphism
                Method overloading
            

            
                Run-time Polymorphism
                Method overriding
            

        

        Important Concept:

        
Same method name + different parameters → Method Overloading
        

        Conclusion:

        
            
                substring() is defined in multiple forms.
            
            
                Java selects method based on parameters passed.
            
            
                This is an example of compile-time polymorphism.
            
        

        
Correct Answer: Method Overloading

[Polymorphism]

In the given code snippet, which feature of object‑oriented programming concept is being exhibited by the `substring()` method?

String s = "sandwich"; System.out.println(s.substring(4)); System.out.println(s.substring(1,4));

Answer with Explanation

Understanding the Code:

Two Different Method Calls:

Meaning of Each:

Output Explanation:

What is Method Overloading?

Type of Polymorphism:

Important Concept:

Conclusion:

Method Call	Meaning
substring(int start)	Returns substring from index to end
substring(int start, int end)	Returns substring from start to end‑1

Polymorphism Type	Description
Compile-time Polymorphism	Method overloading
Run-time Polymorphism	Method overriding

[Polymorphism] In the given code snippet, which feature of object‑oriented programming concept is being exhibited by the substring() method? String s = "sandwich"; System.out.println(s.substring(4)); System.out.println(s.substring(1,4));