JAVA Strings
String str1 = "Kolkata".replace('k', 'a');In the above statement, the effect on string Kolkata is

Displays error message
All characters a are replaced by k.
The first occurrence of k is replaced by a.
All characters k are replaced by a.

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JAVA Strings
What will be the output?1. public class Test{2. public static void main(String args[]){3. Object myObj = new String[]{"one", "two", "three"};4. {5. for(String s : (String[])myObj) 6. System.out.print(s + ".");7. }8. }9. }

Compilation fails because of an error at line 3
Compilation fails because of an error at line 5
An exception is thrown at runtime.
one.two.three.
None of these

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