R Karthik

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since Feb 09, 2018
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Recent posts by R Karthik

Thanks for your quick response.

Double d=Double.valueOf(120D);    //1  Compiles Successfully)

Float f=Float.valueOf(120D);       //2
Long a=Long.valueOf(120D);                       //3
Integer b=Integer.valueOf(120D);
     //4             // But not 2,3&4.

Could someone explain to me, clearly?
Why 2,3 & 4 are giving a compilation error but 1 doesn't?
Thanks for your help, in advance.
Thanks for your reply.
Please see the below questions,
1)
         class MyString extends String{   
               MyString()
                { super(); }}


Answer: You cannot extend string class because it's a final class. I am sure, the book never discussed that String is a final class anywhere.

2)Identify the correct statements,

So many options were listed but this is the correct answer.
Local date, Local Time and LocalDateTime implement TemporalAccessor.

Again, same. I have never seen any info regarding TemporalAccessor.

3)Which of the following are true regarding the new Date-Time API of Java 8?

Answer: It uses the calendar system defined in ISO-8601 as the default calendar.

and there are some more questions as well.





Hi,
Could someone explain me this question clearly for me, Thanks.


for(int i=0;i<5;i++){
System.out.print(1);
if(i<2) continue;
else break;
}


OCA Sybex book, page number,91 says(Table 2.5), that if statement won't allow continue statement.
But the above code compiles without any issue.

I did see some examples in the book with If statement having continue, but with optional labels. so I understood that if statement allows "continue",  only when the optional labels were used.
But I am confused now, could someone explain to me clearly, where I am going wrong.
Hi,
I have got the OCA SE 8 Programmer 1 book and bought the Enthuware kit as well to practise side by side.
I only took the standard test and felt most of the questions were not covered in my book.
Am I the only person having this issues, or do you guys felt the same.
Please let me know, what are the other books, I can get?
Thanks in advance
Thanks for your reply.
Yes, I am using an electronic version. (Kindle)
Chapter 5 Review questions.
Question No 19) Where is the blank in the question?

public class Snake {}
public class Cobra extends Snake {}
public class GardenSnake {}
public class SnakeHandler {
   private Snake snake;
   public void setSnake(Snake snake) { this.snake = snake; }
public static void main(String[] args) {
     new SnakeHandler().setSnake();
   }
}


Please reply, thanks