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getChars2887


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getChars2887
What will be output of the following program?
public class StringBufferDemo {
    public static void main(String[] args) {
        StringBuffer buff = new StringBuffer("Oh! Java Programming");
        System.out.println("Buffer = " + buff);
        char[] array = new char[]{'M', 'e', 'r', 'i', 't', ' ', 'C', 'a', 'm', 'p', 'u', 's'};
        buff.getChars(2, array.length, array, 3);
        System.out.println(array);
    }
}

A. Buffer = Oh! Java Programming
Merit Campus
B. Buffer = Oh! Java Programming
! Java Programming
C. Buffer = Oh! Java Programming
Mer! Java Pro
D. Compilation Error or Runtime Error
Topic: StringBuffer getChars() Method In Java With Example

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User comments below. All of them might not be correct.

Answer C we will take the chars from buff starting at loc 2 and overrite the char array from loc 3

Posted by Deepak Kumar Yadav    2014-08-19 12:42:05


Ans is D.ArrayIndexOutOfBounds Exception arises. The destination index is the size of the array which is not a valid index(size -1 )

Posted by Nikhil Sulibhavi    2014-08-19 12:45:19


c.getchar method copies characters from this string into the destination character array..
here 2=index of the first character in the string to copy.
arrau.length=12 is th indx til wen to bb copied.
array is the dstntn for pastng  the strng..
3 us locatn in array where thw strng to b pastd
hence ! java pro is copied n pasted in array strng

Posted by Asma Mujtaba Khan    2014-08-19 12:46:01


D is ans.. it gives arrayindexoutbound exception.. we are trying to copy the string in string buffer..its size is more than the array size.. so it gives exception...

Posted by Sareesh Rayapati    2014-08-19 12:53:10


Congratulations Nikhil Sulibhavi. You are this dose winner. We will send you the link using which you can claim your recharge.

Posted by Merit Campus    2014-08-20 05:02:03


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