Java Fundamentals

Which of the following option leads to the portability and security of Java?

• Bytecode is executed by JVM

• The applet makes the Java code secure and portable

• Use of exception handling

• Dynamic binding between objects

Which of the following is not a Java features?

• Dynamic

• Architecture Neutral

• Use of pointers

• Object-oriented

_____ is used to find and fix bugs in the Java programs.

• JVM

• JRE

• JDK

• JDB

Which of the following is a valid declaration of a char?

• char ch = '\utea';

• char ca = 'tea';

• char cr = \u0223;

• char cc = '\itea';

What does the expression float a = 35 / 0 return?

• 0

• Not a number

• Infinity

• Run time exception

Evaluate the following Java expression, if x=3, y=5, and z=10:

++z + y - y + z + x++

• 24

• 23

• 20

• 25

Which of the following for loop declaration is not valid?

• for ( int i = 99; i >= 0; i / 9 )

• for ( int i = 7; i <= 77; i += 7 )

• for ( int i = 20; i >= 2; - -i )

• for ( int i = 2; i <= 20; i = 2* i )

Which of the following is not OOPS concept in Java?

• Inheritance

• Encapsulation

• Polymorphism

• Compilation

Which of the following is a type of polymorphism in Java?

• Compile time polymorphism

• Execution time polymorphism

• Multiple polymorphism

• Multilevel polymorphism

When does method overloading is determined?

• At run time

• At compile time

• At coding time

• At execution time