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class selection_statements
{
public static void main(String args[])
{
int var1 = 5;
int var2 = 6;
if ((var2 = 1) == var1)
System.out.print(var2);
else
System.out.print(++var2);
}
}
What will be the output of the following Java program?
class comma_operator
{
public static void main(String args[])
{
int sum = 0;
for (int i = 0, j = 0; i < 5 & j < 5; ++i, j = i + 1)
sum += i;
System.out.println(sum);
}
}
What will be the output of the following Java program?
class jump_statments
{
public static void main(String args[])
{
int x = 2;
int y = 0;
for ( ; y < 10; ++y)
{
if (y % x == 0)
continue;
else if (y == 8)
break;
else
System.out.print(y + ” “);
}
}
}
What will be the output of the following Java program?
class Output
{
public static void main(String args[])
{
final int a=10,b=20;
while(a<b)
{
System.out.println(“Hello”);
}
System.out.println(“World”);
}
}
What will be the output of the following Java program?
class Output
{
public static void main(String args[])
{
int a = 5;
int b = 10;
first:
{
second:
{
third:
{
if (a == b >> 1)
break second;
}
System.out.println(a);
}
System.out.println(b);
}
}
}
if(a<=0)
{
if(a==0)
{
System.out.println(“1 “);
}
else
{
System.out.println(“2 “);
}
}
System.out.println(“3 “);
What is true about a break?
What is true about do statement?
What will be the output of the following Java program?
class string_class
{
public static void main(String args[])
{
String obj = “hello”;
String obj1 = “world”;
String obj2 = “hello”;
System.out.println(obj.equals(obj1) + ” ” + obj.equals(obj2));
}
}
Which of these method of class String is used to compare two String objects for their equality?
What will be the output of the following Java code?
class output
{
public static void main(String args[])
{
String chars[] = {“a”, “b”, “c”, “a”, “c”};
for (int i = 0; i < chars.length; ++i)
for (int j = i + 1; j < chars.length; ++j)
if(chars[i].compareTo(chars[j]) == 0)
System.out.print(chars[j]);
}
}
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);
}
}
}
Which of the following statements is correct?
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);
}
}
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 obj1 = new box();
box obj2 = new box();
obj1.height = 1;
obj1.length = 2;
obj1.width = 1;
obj2 = obj1;
System.out.println(obj2.height);
}
}
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();
System.out.println(obj);
}
}
Which of these classes encapsulate runtime state of an object?
Which of these methods returns the class of an object?
Which of these methods return a class object given its name?
Which of this class defines how the classes are loaded?
What will be the output of the following Java program?
class X
{
int a;
double b;
}
class Y extends X
{
int c;
}
class Output
{
public static void main(String args[])
{
X a = new X();
Y b = new Y();
Class obj;
obj = a.getClass();
System.out.print(obj.getName());
}
}
What will be the output of the following Java program?
class X
{
int a;
double b;
}
class Y extends X
{
int c;
}
class Output
{
public static void main(String args[])
{
X a = new X();
Y b = new Y();
Class obj;
obj = b.getClass();
System.out.print(obj.getSuperclass());
}
}
What will be the output of the following Java program? class X { int a; double b; } class Y extends X { int c; } class Output { public static void main(String args[]) { X a = new X(); Y b = new Y(); Class obj; obj = b.getClass(); System.out.print(obj.isLocalClass()); } }
Which method can be defined only once in a program?
Which of this statement is incorrect?
What 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);
}
}
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 box
{
int width;
int height;
int length;
int volume;
void volume()
{
volume = width*height*length;
}
}
class Output
{
public static void main(String args[])
{
box obj = new box();
obj.height = 1;
obj.length = 5;
obj.width = 5;
obj.volume();
System.out.println(obj.volume);
}
}
In 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);
}
}
What will be the output of the following Java program?
class area {
int width;
int length;
int volume;
area()
{
width=5;
length=6;
}
void volume()
{
volume = width*length*height;
}
}
class cons_method
{
public static void main(String args[])
{
area obj = new area();
obj.volume();
System.out.println(obj.volume);
}
}
What is the return type of Constructors?
Which keyword is used by the method to refer to the object that invoked it?
Which of the following is a method having same name as that of its class?
Which operator is used by Java run time implementations to free the memory of an object when it is no longer needed?
Which function is used to perform some action when the object is to be destroyed?
What will be the output of the following Java code?
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);
}
}
What will be the output of the following Java code?
class San
{
San()throws IOException
{
}
}
class Foundry extends San
{
Foundry()
{
}
public static void main(String[]args)
{
}
}
What will be the output of the following Java code?
class box {
int width;
int height;
int length;
int volume;
void finalize()
{
volume = width*height*length;
System.out.println(volume);
}
protected void volume()
{
volume = width*height*length;
System.out.println(volume);
}
}
class Output
{
public static void main(String args[])
{
box obj = new box();
obj.width=5;
obj.height=5;
obj.length=6;
obj.volume();
}
}
Which of the following statements are incorrect?
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);
}
}
What is true about private constructor?
What would be the behaviour if this() and super() used in a method?
What is false about constructor?
What is true about Class.getInstance()?
What is true about constructor?
Abstract class cannot have a constructor
What is true about protected constructor?
What is not the use of “this” keyword in Java?
What would be the behaviour if one parameterized constructor is explicitly defined?
What would be behaviour if the constructor has a return type?