need answer

[Sabber bhatia]

class MyClass
{
public static void main (String args[])
{
String s1[] = new String[5];
String str = s1[0].toUpperCase();
System.out.println(str);
}
}

[Vladimir Scheglov]

You will see NullPointerException, because aray initialize default values. For objects (String is object) default value is null

[Finner Jones]

Hi,
Runtime Error.
Because s1[0] is null by default, and you are attempting null.toUpperCase().

Finner

[wise owen]

Had you entered the code into a program and tested it? You can figure it out.

[Barry Gaunt]

Sabber,
first, can you please use a meaningful topic title (remember that things urgent to you are not necessarily urgent to others).
Second, write a meaningful question.
Third, show that you are trying to solve these questions yourself and not just leaving the work for others to do. Read the API/JLS and write code examples.
Fourth, state the source of your questions, from what mock exams are they.
Fifth, use

markers around code examples to preserve formatting.
Sixth, search this forum for similar questions in the past.