PEC-OOPS

Select the valid statement to declare and initialize an array.

• int[] A = {}

• int[] A = {1, 2, 3}

• int[] A = (1, 2, 3)

• int[][] A = {1,2,3}

Select the valid statement to declare and initialize an array.

int[][] A = {1,2,3}

• int[] A = {}

• int[] A = {1, 2, 3}

• int[] A = (1, 2, 3)

• int[][] A = {1,2,3}

When is the object created with new keyword?

• At Run time

• At compile time

• Depends on the Code

• None

Identify the corrected definition of a package.

• A package is a collection of editing tools

• A package is a collection of classes

• A package is a collection of classes and interfaces

• A package is a collection of interfaces

A blueprint for a software object is called a ___.

• object

• program

• API

• class

How many Bytes are reserved for "Char" data type in JAVA?

• 1 Byte

• 2 Bytes

• 2 Bits

• 14 Bits

Identify the keyword among the following that makes a variable belong to a class,rather than being defined for each instance of the class.

• final

• static

• volatile

• abstract

Which of the following explains Polymorphism?

• int func(int, int);

  float func1(float, float);

• int func(float);

  int func(int, int, char);

• int func();

  int new_func();

• int func(int);

  int func(int);

Java is a platform independent programming language because

• It is written almost similar to English language

• Java compiler translates the source code directly to the machine level language.

• It follows the concept of “write once and compile everywhere”.

• It compiles to an intermediate code targeting a virtual machine, which can be interpreted by an interpreter for a given OS.

Identify what can directly access and change the value of the variable res.

Package com.mypackage;

Public class Solution

{

Private int res = 100;

}

• Any class

• Only Solution class

• Any class that extends Solution

• None