String Test

[Sarath Koiloth Ramath]

   
 
package OnLineMock.exam;
 
public class StringTest {
public String makinStrings() {
 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?and how ?

Thanks in advance

[Mustafa Musaji]

I'm having trouble with String creations also but I think the above code will create 5 String objects.

They are:

Fred
47
Fred47
ed4
ED4

Please correct me if I am wrong. What do you think the answer is?
[ May 30, 2008: Message edited by: Mustafa Musaji ]

[niveditha ramana]

String s = "Fred";
s = s + "47";
s = s.substring(2, 5);
s = s.toUpperCase();

i think only four objects were created

1. "Fred"
2. s now refers the object s+"47" ->"Fred47"
3. "ed4"
4. lastly object "ED4"

[Campbell Ritchie]

I think this same question has come up before; please quote where you got the question from. And remembering what was discussed when it came up before, the answer is simple: you have both got it wrong. Read the question carefully and give the correct answer.

[Dinesh Tahiliani]

This question is from Kathy and sierra book

i think answer is 2 string objects created

1. String s ="fred"
2. s=s+"47"

please correct me if i am wrong..

[Yaroslav Ashurin]

Hey, Sarath, what's up.

Please check the thread: https://coderanch.com/t/410223/java/java/String-objects

[niveditha ramana]

thank you Yaroslav Ashurin
i got it clear.

thanks lot for Campbell Ritchie