21. What will be the output of the following Java code?
class area
{
int width;
int length;
int area;
void area(int width, int length)
{
this.width = width;
this.length = length;
}
}
class Output
{
public static void main(String args[])
{
area obj = new area();
obj.area(5 , 6);
System.out.println(obj.length + " " + obj.width);
}
}
class area
{
int width;
int length;
int area;
void area(int width, int length)
{
this.width = width;
this.length = length;
}
}
class Output
{
public static void main(String args[])
{
area obj = new area();
obj.area(5 , 6);
System.out.println(obj.length + " " + obj.width);
}
}22. What will be the output of the following Java program?
class main_class
{
public static void main(String args[])
{
int x = 9;
if (x == 9)
{
int x = 8;
System.out.println(x);
}
}
}
class main_class
{
public static void main(String args[])
{
int x = 9;
if (x == 9)
{
int x = 8;
System.out.println(x);
}
}
}23. What is -Xms and -Xmx while starting jvm?
24. What 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(6));
}
}
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(6));
}
}25. What 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();
obj.width = 10;
obj.height = 2;
obj.length = 10;
int y = obj.width * obj.height * obj.length;
System.out.print(y);
}
}
class box
{
int width;
int height;
int length;
}
class mainclass
{
public static void main(String args[])
{
box obj = new box();
obj.width = 10;
obj.height = 2;
obj.length = 10;
int y = obj.width * obj.height * obj.length;
System.out.print(y);
}
}26. What is the process of defining more than one method in a class differentiated by method signature?
27. Which of the following statements is correct?
28. Which of this statement is incorrect?
29. Which concept of Java is achieved by combining methods and attribute into a class?
30. What 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(1));
}
}
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(1));
}
}Read More Section(Constructors and Methods)
Each Section contains maximum 100 MCQs question on Constructors and Methods. To get more questions visit other sections.