Option A is correct - because the class that extends A is just simply overriding

 method1.

Option B is wrong - because it can't override as there are less access privileges

in the subclass method1.

Option C is wrong - because to override it, the return type needs to be an integer.

 The different return type means that the method is not overriding but the same

 argument list means that the method is not overloading. Conflict - compile time

 error.

Option D is wrong - because you can't override a method and make it a class

method i.e. using static.

However A, B and C are all wrong. Each of these would result in a narrowing

 conversion. Whereas we want a widening conversion, therefore the only correct

 answer is D. Don't be put off by the long cast, this applies only to the variable x

 and not the rest of the expression. It is the variable y (of type double) that forces

 the widening conversion to double.

Java's widening conversions are:

- From a byte to a SHORT, an int, a long, a float, or a double.

- From a short, an int, a long, a float, or a double.

- From a char to an int, a long, a float, or a double.

- From an int to a long, a float, or a double.

- From a long to a float, or a double.

- From a float to a double.

b >> 1 in if returns 5 which is equal to a i:e 5, therefore body
of if is executed and block second

is exited. Control goes to end of
the block second executing the last print statement, printing 10.
output:
$ javac Output.java
$ java Output
10

 class objects are always passed by reference, therefore changes done are reflected back 

on original arguments. obj.meth(obj) sends object obj as parameter whose variables a & b 

are multiplied and divided by 2 respectively by meth() function of class test. a & b becomes 

20 & 10 respectively.
output:
$ javac Output.java
$ java Output
20 10

Operator short circuit and, &&, skips evaluating right hand
operand if left hand operand is false thus
division by zero in if
condition does not give an error.
output:
$ javac Output.java
$ java Output
2

None.

Whenever y is divisible by x remainder body of loop is skipped by
continue statement, therefore

if condition y == 8 is never true as when y
is 8, remainder body of loop is skipped by continue

statements of first
if. Control comes to print statement only in cases when y is odd.
output:
$ javac jump_statments.java
$ java jump_statments
1 3 5 7 9

None.
output:
$ javac static_use.java
$ java static_use
6 6.4

(2), (3), and (5). These are all valid interface method signatures.

(1), is incorrect because an interface method must be public; if it is not explicitly

 declared public it will be made public implicitly. (4) is incorrect because interface

 methods cannot be static.

The only two real contenders are C and D. Protected access Option C makes a

 member accessible only to classes in the same package or subclass of the class.

 While default access Option D makes a member accessible only to classes in the

 same package.