String Objects

[francis varkey]

Respected Sirs,

public String makeStrings()
{
String s="Fred";
s=s+"47";
s=s.substring(2,5);
s=s.toUpperCase();
return s.toString();
}
/*How many string objects will be created when this method is invoked
a)1
b)2
c)3
d)4
e)5
f)6

Thnks

Francis

[Sidharth Pallai]

Total Five String referential objects?

[francis varkey]

But the question providers say the answer is 3:

I think there is 6:

1) "Fred"
2) "47"
3)"Fred47"
4)"ed4"
5)"ED4"
6)"ED4" , while calling toString()

can anyone help with explabation

[Jesper de Jong]

Try searching the forums for "Fred 47". This exact same question has been asked and answered here many times.

For example:
How many string object created in this code
String Test
Strings
Q from javaBeat on String
Strings Doubt
Strings
doubt with string abjects
How many object create?
...
[ July 01, 2008: Message edited by: Jesper Young ]

[Sunny Mattas]

Read questiobnm carefully
It ask's for number of strings objects created when method is invoked i.e. at runtime.
I think there are three string objects being created when program runs. Others are created at compile time.

Regards
Sunny

[Madhukar Ojha]

Hi Rancher ,

Total 3 String objects will be created .
"Fred" and "47" are literals hence will be created before invocation of this method.