Data Types and Variables
What is the output of the following program?public class Test{static int x = 10 ; public static void main(String[] a){ Test test = new Test( ) ; Test test1 = new Test( ) ; test.x += 1 ; System.out.println( test.x + test1.x ) ; }}

22
20
Throws Exception
21
Compilation Error

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Data Types and Variables
What is the output for the below code?public class Test{ int _$; int $7; int do; public static void main(String argv[]){ Test test = new Test(); test.$7=7; test.do=9; System.out.println(test.$7); System.out.println(test.do); System.out.println(test._$); }}

Compile error - do is not valid identifier.
Compile error - $7 is not valid identifier.
7 0 0
7 9 0
None of these

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Data Types and Variables
What is the output for the below code ?class A{ int k; boolean istrue; static int p; public void printValue(){ System.out.print(k); System.out.print(istrue); System.out.print(p); }}public class Test{ public static void main(String argv[]){ A a = new A(); a.printValue(); }}

0 false 0
Compile error - static variable must be initialized before use.
0 true 0
0 0 0
None of these

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