Java Test Set-2
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Question 1 of 49
1. Question
What is the process of defining two or more methods within same class that have same name but different parameters declaration?
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Question 2 of 49
2. Question
Which of these can be overloaded?
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Question 3 of 49
3. Question
What is the process of defining a method in terms of itself, that is a method that calls itself?
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Question 4 of 49
4. Question
What will be the output of the following Java code?
class San
{
public void m1 (int i,float f)
{
System.out.println(” int float method”);
}
public void m1(float f,int i);
{
System.out.println(“float int method”);
}
public static void main(String[]args)
{
San s=new San();
s.m1(20,20);
}
}
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Question 5 of 49
5. Question
What will be the output of the following Java code?
class overload
{
int x;
int y;
void add(int a)
{
x = a + 1;
}
void add(int a, int b)
{
x = a + 2;
}
}
class Overload_methods
{
public static void main(String args[])
{
overload obj = new overload();
int a = 0;
obj.add(6);
System.out.println(obj.x);
}
}
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Question 6 of 49
6. Question
What will be the output of the following Java code?
class overload
{
int x;
int y;
void add(int a)
{
x = a + 1;
}
void add(int a , int b)
{
x = a + 2;
}
}
class Overload_methods
{
public static void main(String args[])
{
overload obj = new overload();
int a = 0;
obj.add(6, 7);
System.out.println(obj.x);
}
}
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Question 7 of 49
7. Question
What will be the output of the following Java code?
class overload {
int x;
double y;
void add(int a , int b)
{
x = a + b;
}
void add(double c , double d)
{
y = c + d;
}
overload()
{
this.x = 0;
this.y = 0;
}
}
class Overload_methods
{
public static void main(String args[])
{
overload obj = new overload();
int a = 2;
double b = 3.2;
obj.add(a, a);
obj.add(b, b);
System.out.println(obj.x + ” ” + obj.y);
}
}
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Question 8 of 49
8. Question
What will be the output of the following Java code?
class test
{
int a;
int b;
void meth(int i , int j)
{
i *= 2;
j /= 2;
}
}
class Output
{
public static void main(String args[])
{
test obj = new test();
int a = 10;
int b = 20;
obj.meth(a , b);
System.out.println(a + ” ” + b);
}
}
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Question 9 of 49
9. Question
What will be the output of the following Java code?
class test
{
int a;
int b;
test(int i, int j)
{
a = i;
b = j;
}
void meth(test o)
{
o.a *= 2;
O.b /= 2;
}
}
class Output
{
public static void main(String args[])
{
test obj = new test(10 , 20);
obj.meth(obj);
System.out.println(obj.a + ” ” + obj.b);
}
}
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Question 10 of 49
10. Question
Arrays in Java are implemented as?
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Question 11 of 49
11. Question
Which of these keywords is used to prevent content of a variable from being modified?
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Question 12 of 49
12. Question
Which of these cannot be declared static?
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Question 13 of 49
13. Question
Which of the following statements are incorrect?
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Question 14 of 49
14. Question
Which of the following statements are incorrect?
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Question 15 of 49
15. Question
Which of these methods must be made static?
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Question 16 of 49
16. Question
What will be the output of the following Java program?
class access
{
public int x;
static int y;
void cal(int a, int b)
{
x += a ;
y += b;
}
}
class static_specifier
{
public static void main(String args[])
{
access obj1 = new access();
access obj2 = new access();
obj1.x = 0;
obj1.y = 0;
obj1.cal(1, 2);
obj2.x = 0;
obj2.cal(2, 3);
System.out.println(obj1.x + ” ” + obj2.y);
}
}
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Question 17 of 49
17. Question
What will be the output of the following Java program?
class access
{
static int x;
void increment()
{
x++;
}
}
class static_use
{
public static void main(String args[])
{
access obj1 = new access();
access obj2 = new access();
obj1.x = 0;
obj1.increment();
obj2.increment();
System.out.println(obj1.x + ” ” + obj2.x);
}
}
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Question 18 of 49
18. Question
What will be the output of the following Java program?
class static_out
{
static int x;
static int y;
void add(int a , int b)
{
x = a + b;
y = x + b;
}
}
class static_use
{
public static void main(String args[])
{
static_out obj1 = new static_out();
static_out obj2 = new static_out();
int a = 2;
obj1.add(a, a + 1);
obj2.add(5, a);
System.out.println(obj1.x + ” ” + obj2.y);
}
}
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Question 19 of 49
19. Question
What will be the output of the following Java program?
class Output
{
public static void main(String args[])
{
int arr[] = {1, 2, 3, 4, 5};
for ( int i = 0; i < arr.length – 2; ++i)
System.out.println(arr[i] + ” “);
}
}
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Question 20 of 49
20. Question
What will be the output of the following Java program?
class Output
{
public static void main(String args[])
{
int a1[] = new int[10];
int a2[] = {1, 2, 3, 4, 5};
System.out.println(a1.length + ” ” + a2.length);
}
}
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Question 21 of 49
21. Question
What will be the output of the following Java code?
class average {
public static void main(String args[])
{
double num[] = {5.5, 10.1, 11, 12.8, 56.9, 2.5};
double result;
result = 0;
for (int i = 0; i < 6; ++i)
result = result + num[i];
System.out.print(result/6);
}
}
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Question 22 of 49
22. Question
What will be the output of the following Java statement?
class output {
public static void main(String args[])
{
double a, b,c;
a = 3.0/0;
b = 0/4.0;
c=0/0.0;
System.out.println(a);
System.out.println(b);
System.out.println(c);
}
}
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Question 23 of 49
23. Question
What will be the output of the following Java code?
class increment {
public static void main(String args[])
{
int g = 3;
System.out.print(++g * 8);
}
}
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Question 24 of 49
24. Question
What will be the output of the following Java code?
class area {
public static void main(String args[])
{
double r, pi, a;
r = 9.8;
pi = 3.14;
a = pi * r * r;
System.out.println(a);
}
}
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Question 25 of 49
25. Question
Which of these is an incorrect array declaration?
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Question 26 of 49
26. Question
Which of these is an incorrect Statement?
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Question 27 of 49
27. Question
What will be the output of the following Java code?
class array_output
{
public static void main(String args[])
{
int array_variable [] = new int[10];
for (int i = 0; i < 10; ++i)
{
array_variable[i] = i;
System.out.print(array_variable[i] + ” “);
i++;
}
}
}
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Question 28 of 49
28. Question
What will be the output of the following Java code?
class multidimention_array
{
public static void main(String args[])
{
int arr[][] = new int[3][];
arr[0] = new int[1];
arr[1] = new int[2];
arr[2] = new int[3];
int sum = 0;
for (int i = 0; i < 3; ++i)
for (int j = 0; j < i + 1; ++j)
arr[i][j] = j + 1;
for (int i = 0; i < 3; ++i)
for (int j = 0; j < i + 1; ++j)
sum + = arr[i][j];
System.out.print(sum);
}
}
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Question 29 of 49
29. Question
What will be the output of the following Java code?
class evaluate
{
public static void main(String args[])
{
int arr[] = new int[] {0 , 1, 2, 3, 4, 5, 6, 7, 8, 9};
int n = 6;
n = arr[arr[n] / 2];
System.out.println(arr[n] / 2);
}
}
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Question 30 of 49
30. Question
What will be the output of the following Java code?
class array_output
{
public static void main(String args[])
{
char array_variable [] = new char[10];
for (int i = 0; i < 10; ++i)
{
array_variable[i] = ‘i’;
System.out.print(array_variable[i] + “”);
}
}
}
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Question 31 of 49
31. Question
What will be the output of the following Java code?
class array_output
{
public static void main(String args[])
{
int array_variable[][] = {{ 1, 2, 3}, { 4 , 5, 6}, { 7, 8, 9}};
int sum = 0;
for (int i = 0; i < 3; ++i)
for (int j = 0; j < 3 ; ++j)
sum = sum + array_variable[i][j];
System.out.print(sum / 5);
}
}
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Question 32 of 49
32. Question
What will be the output of the following Java code?
class char_increment
{
public static void main(String args[])
{
char c1 = ‘D’;
char c2 = 84;
c2++;
c1++;
System.out.println(c1 + ” ” + c2);
}
}
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Question 33 of 49
33. Question
What will be the output of the following Java code?
class conversion
{
public static void main(String args[])
{
double a = 295.04;
int b = 300;
byte c = (byte) a;
byte d = (byte) b;
System.out.println(c + ” ” + d);
}
}
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Question 34 of 49
34. Question
What will be the output of the following Java code?
class A
{
final public int calculate(int a, int b) { return 1; }
}
class B extends A
{
public int calculate(int a, int b) { return 2; }
}
public class output
{
public static void main(String args[])
{
B object = new B();
System.out.print(“b is ” + b.calculate(0, 1));
}
}
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Question 35 of 49
35. Question
What will be the output of the following Java program, if we run as “java main_arguments 1 2 3”?
class main_arguments
{
public static void main(String [] args)
{
String [][] argument = new String[2][2];
int x;
argument[0] = args;
x = argument[0].length;
for (int y = 0; y < x; y++)
System.out.print(” ” + argument[0][y]);
}
}
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Question 36 of 49
36. Question
Which of the following is not OOPS concept in Java?
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Question 37 of 49
37. Question
Which of the following is a type of polymorphism in Java?
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Question 38 of 49
38. Question
When does method overloading is determined?
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Question 39 of 49
39. Question
When Overloading does not occur?
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Question 40 of 49
40. Question
Which concept of Java is a way of converting real world objects in terms of class?
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Question 41 of 49
41. Question
Which concept of Java is achieved by combining methods and attribute into a class?
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Question 42 of 49
42. Question
What is it called if an object has its own lifecycle and there is no owner?
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Question 43 of 49
43. Question
What is it called where child object gets killed if parent object is killed?
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Question 44 of 49
44. Question
What is it called where object has its own lifecycle and child object cannot belong to another parent object?
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Question 45 of 49
45. Question
What will be the output of the following Java code?
class access
{
public int x;
private int y;
void cal(int a, int b)
{
x = a + 1;
y = b;
}
}
public class access_specifier
{
public static void main(String args[])
{
access obj = new access();
obj.cal(2, 3);
System.out.println(obj.x + ” ” + obj.y);
}
}
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Question 46 of 49
46. Question
What will be the output of the following Java code?
class access
{
public int x;
private int y;
void cal(int a, int b)
{
x = a + 1;
y = b;
}
void print()
{
System.out.println(” ” + y);
}
}
public class access_specifier
{
public static void main(String args[])
{
access obj = new access();
obj.cal(2, 3);
System.out.println(obj.x);
obj.print();
}
}
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Question 47 of 49
47. Question
What will be the output of the following Java code?
class static_out
{
static int x;
static int y;
void add(int a, int b)
{
x = a + b;
y = x + b;
}
}
public class static_use
{
public static void main(String args[])
{
static_out obj1 = new static_out();
static_out obj2 = new static_out();
int a = 2;
obj1.add(a, a + 1);
obj2.add(5, a);
System.out.println(obj1.x + ” ” + obj2.y);
}
}
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Question 48 of 49
48. Question
Which of these access specifiers must be used for class so that it can be inherited by another subclass?
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Question 49 of 49
49. Question
How many copies of static and class variables are created when 10 objects are created of a class?