JAVA Classes and Methods Mcqs
Our collections of Multiple choice questions and answers focuses on study of Java Classes and Methods . These questions are chosen from a collection of most authoritative and best reference books on Java Classes and Methods. Our aim is to prepare an individual for competitive exams like NTS, GAT, ECAT, University and College entrance exams and various tests and job interviews. One should practice our Mcqs to assimilate Java Classes and Methods comprehensively.
Java Programming Mcqs
Computer MCQS
Sciences MCQS
2.
What is the process of defining more than one method in a class differentiated by method signature?
4.
Which method can be defined only once in a program?
5.
What is the output of this program?
class box
{
int width;
int height;
int length;
int volume;
void volume(int height, int length, int width)
{
volume = width*height*length;
}
}
class Prameterized_method
{
public static void main(String args[])
{
box obj = new box();
obj.height = 1;
obj.length = 5;
obj.width = 5;
obj.volume(3,2,1);
System.out.println(obj.volume);
}
}
class box
{
int width;
int height;
int length;
int volume;
void volume(int height, int length, int width)
{
volume = width*height*length;
}
}
class Prameterized_method
{
public static void main(String args[])
{
box obj = new box();
obj.height = 1;
obj.length = 5;
obj.width = 5;
obj.volume(3,2,1);
System.out.println(obj.volume);
}
}
6.
What is the output of this program?
class equality
{
int x;
int y;
boolean isequal()
{
return(x == y);
}
}
class Output
{
public static void main(String args[])
{
equality obj = new equality();
obj.x = 5;
obj.y = 5;
System.out.println(obj.isequal());
}
}
class equality
{
int x;
int y;
boolean isequal()
{
return(x == y);
}
}
class Output
{
public static void main(String args[])
{
equality obj = new equality();
obj.x = 5;
obj.y = 5;
System.out.println(obj.isequal());
}
}
7.
Which keyword is used by the method to refer to the object that invoked it?
8.
Which of the following is a method having same name as that of its class?
9.
Which operator is used by Java run time implementations to free the memory of an object when it is no longer needed?
10.
Which function is used to perform some action when the object is to be destroyed?
11.
What is the output of this program?
class box
{
int width;
int height;
int length;
int volume;
box()
{
width = 5;
height = 5;
length = 6;
}
void volume()
{
volume = width*height*length;
}
}
class constructor_output
{
public static void main(String args[])
{
box obj = new box();
obj.volume();
System.out.println(obj.volume);
}
}
class box
{
int width;
int height;
int length;
int volume;
box()
{
width = 5;
height = 5;
length = 6;
}
void volume()
{
volume = width*height*length;
}
}
class constructor_output
{
public static void main(String args[])
{
box obj = new box();
obj.volume();
System.out.println(obj.volume);
}
}
12.
What is the output of this program?
class Compsci
{
Compsci()throws IOException
{
}
}
class Bits extends Compsci
{
Bits()
{
}
public static void main(String[]args)
{
}
}
class Compsci
{
Compsci()throws IOException
{
}
}
class Bits extends Compsci
{
Bits()
{
}
public static void main(String[]args)
{
}
}