ISRO2014-29

Question

Consider the following Java code fragment:

public class While
{
    public void loop()
    {
        int x = 0;
        while(1)
        {
            System.out.println("x plus one is" +(x+1));
        }
    }
}

• A. There is syntax error in line no. 1
• B. There is syntax errors in line nos. 1 & 6
• C. There is syntax error in line no. 8
• D. There is syntax error in line no. 6

Comments

I think syntactically all the lines are correct

Answer 1

In Java, while(1) will give compiler time error as it treats as Type mismatch to convert from int to Bool value. Hence Ans :D

Comments

thank u

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but there is implicit conversion also ..so java compiler will take care of that I think error is at Line-1, where While is used..compiler can't recognise While..ryt???

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its just declaration of class na

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While is a keyword right ? so how can we use it as class name ? I think 1 & 6 line no. have errors.

Sorry! my mistake I wasn't aware of this concept in java :  yes only line no. 6 will give error.. please check the below link

https://stackoverflow.com/questions/30491035/can-java-class-files-use-reserved-keywords-as-names

Answer 2

No syntax error..

Comments

As While is a keyword and we can not use keywords as class name..so I think answer is option 1..correct me if wrong

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Java is case-sensitive. So, while while is a keyword, While is not.

Answer 3

I think answer is A as we cannot have class While

Comments

@ Divya Bharti

The class name is While not while keyword

it does not treat it as a keyword as java is case sensitive

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ok,Thank you