Q101
Open questionWhat is it called where object has its own lifecycle and child object cannot belong to another parent object?
Select an option to see the answer and solution.
Java Programming · all questionsConstructors and Methods
Constructors and Methods
practice.
Practice every MCQ with options. Use Show answers when you want the correct option and solution.
140
Questions
6/7
Page
Pick an option on a question to see the right answer and solution.
Q102
Open questionWhat will be the output of the following Java program?
class recursion
{
int fact(int n)
{
int result;
if (n == 1)
return 1;
result = fact(n - 1) * n;
return result;
}
}
class Output
{
public static void main(String args[])
{
recursion obj = new recursion() ;
System.out.print(obj.fact(5));
}
}Select an option to see the answer and solution.
Q103
Open questionWhich of the below is not a memory leak solution?
Select an option to see the answer and solution.
Q104
Open questionWhich of the below is invalid identifier with the main method?
Select an option to see the answer and solution.
Q105
Open questionWhat is the extension of compiled java classes?
Select an option to see the answer and solution.
Q106
Open questionWhat is the return type of a method that does not return any value?
Select an option to see the answer and solution.
Q107
Open questionWhat is use of interpreter?
Select an option to see the answer and solution.
Q108
Open questionWhat would be the behaviour if this() and super() used in a method?
Select an option to see the answer and solution.
Q109
Open questionWhich of the following is a type of polymorphism in Java?
Select an option to see the answer and solution.
Q110
Open questionWhat would be the behaviour if one parameterized constructor is explicitly defined?
Select an option to see the answer and solution.
Q111
Open questionWhich of the following statements are incorrect?
Select an option to see the answer and solution.
Q112
Open questionWhat is it called if an object has its own lifecycle and there is no owner?
Select an option to see the answer and solution.
Q113
Open questionWhat is true about protected constructor?
Select an option to see the answer and solution.
Q114
Open questionWhat will be the output of the following Java program?
class box
{
int width;
int height;
int length;
}
class mainclass
{
public static void main(String args[])
{
box obj = new box();
System.out.println(obj);
}
}Select an option to see the answer and solution.
Q115
Open questionIn the following Java code, which call to sum() method is appropriate?
class Output
{
public static int sum(int ...x)
{
return;
}
static void main(String args[])
{
sum(10);
sum(10,20);
sum(10,20,30);
sum(10,20,30,40);
}
}Select an option to see the answer and solution.
Q116
Open questionHow can we identify whether a compilation unit is class or interface from a .class file?
Select an option to see the answer and solution.
Q117
Open questionWhat will be the output of the following Java 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);
}
}Select an option to see the answer and solution.
Q118
Open questionWhich of these will happen if recursive method does not have a base case?
Select an option to see the answer and solution.
Q119
Open questionWhat would be behaviour if the constructor has a return type?
Select an option to see the answer and solution.
Q120
Open questionWhich keyword is used by the method to refer to the object that invoked it?
Select an option to see the answer and solution.