Given a sample code:

1.    public class Example1 {
2.   
3.    public static void main(String[] args) {
4.   
5.    System.out.println("To print x you need " + x);
    }
}

Which of these following given statement allow this program to compile and execute?

(1) "char x;" placed on line 2
(2) "char x;" placed on line 4
(3) "char x = 'g';" placed on line 2
(4) "char x = 'g';" placed on line 4
(5) "static char x='g';" placed on line 2
(6) "char x = new char();" placed on line 4

Answer-1

(4),(5)

Explanation:

Only statement 4 and 5 allow program to execute successfully and rest fails because of following reasons.

(1) : Cannot make a static reference to the non-static field x

(2): The local variable x may not have been initialized.

(3): Cannot make a static reference to the non-static field x.

(6): Syntax error on token "char", invalid ClassType

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