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substring confusion...

 
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Options :
A: Hell Hello
B: Hel Hel
C: Hel Hello
D: Hell Hell
Answer : c)It will print Hel Hello
I cannot understand from where did this Hello come from.
and where is 'r' in Hello??
please explain
Sonir
 
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its very simple
1) what does this result in
System.out.print(str.substring(0,3));

It will result in Hel since starting point is 0 and count upto 3 characters(remember the first element in indexed 1)

2)System.out.println(str.replace('r', 'h'));
after this is executed there is no match and the same string is retturned
so it is Hello refer to API for more details.
-A
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