oops

Which of the following is not one of the principles of software engineering?

• Designing

• Computing

• Testing

• Maintenance

Which of the data types is not supported in JAVA

• Pointers

• Float

• Array

• String

What is Scope?

• How to assign a type to a variable

• How the variable is created, used and destroyed

• How the type of a variable can be narrowed

• How the variable is visible to other parts of the program

Which of the following is not the part of SOLID principle

• Single responsibility

• Liskov substitution

• Duplication

• Interface segregation

Which of the following is a symbol for LOGICAL OR operator?

• &&

• |

• !

• ||

Which of the following is incorrect in terms of narrowing conversion?

• byte -> char  

• short -> byte, char

•  char -> byte, long

• int -> byte, short, char  

Which of the following is not a type of operator?

• relational

• bitwise

• logical

• boolean

Which of the following is NOT a correct array implementation?

• int month_days[];

  month_days = new float[12];

• int month_days[] = new int[12];

• int month_days[];

  month_days = new int[12];

• int month_days[] = { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };

what is the output for the following code :-

class Area {

public static void main(String args[]) {

double pi, r, a;

r = 10.8; // radius of circle

pi = 3.1416; // pi, approximately

a = pi r r; // compute area

System.out.println("Area of circle is " + a)

}

}

• Area of circle is 366.436224

• Area of circle is 3.25678

• Compilation error

• Area of circle is 320.7678869

Which of this is an incorrect statement regarding constructor?

• it is syntactically similar to a method

• it has the same name as the name of its class

• the default constructor automatically initializes  all its instance variables to one

• it is written without return type; the default  return type is  of a class