• Placement Questions
• /
• Java

Frequently Asked Java interview questions and answers for freshers

(#M40018946) JAVA QUESTION Advanced JAVA questions Keep an EYE

void start() {
A a = new A();
B b = new B();
a.s(b);
b = null; /* Line 5 */
a = null; /* Line 6 */
System.out.println("start completed"); /* Line 7 */
}

When is the B object, created in line 3, eligible for garbage collection?

A. after line 5
B. after line 6
C. after line 7
D. There is no way to be absolutely certain.

Asked In Java (9 years ago)

Unsolved Read Solution (2)

Is this Puzzle helpful?   (9)   (0) Submit Your Solution Program

(#M40018857) JAVA QUESTION JAVA QUESTIONS Keep an EYE

public void test(int x)
{
int odd = 1;
if(odd) /* Line 4 */
{
System.out.println("odd");
}
else
{
System.out.println("even");
}
}

Which statement is true?

A. Compilation fails.
B. "odd" will always be output.
C. "even" will always be output.
D. "odd" will be output for odd values of x, and "even" for even values.

Asked In Java (9 years ago)

Unsolved Read Solution (21)

Is this Puzzle helpful?   (67)   (25) Submit Your Solution Program

(#M40167137) JAVA QUESTION Java polymorphism Keep an EYE

class Mammal
{
String name= "Dog";
String makeNoise()
{
return "Bow Wow";
}
}

class Cat extends Mammal
{
String name="Cat";
String makeNoise()
{
return "Meow";
}
}

public class Main
{
void go()
{
Mammal m = new Cat();
System.out.println(m.name + m.makeNoise());
}
public static void main (String[] args)
{
new Main().go();
}
}

What is the output of the above program?

A. CatMeow
B. DogBow Wow
C. DogMeow
D. CatBow Wow

Asked In Java Jax (8 Months ago)

Unsolved

Is this Puzzle helpful?   (3)   (1) Submit Your Solution

(#M40031853) JAVA QUESTION Keep an EYE

What is the output of this program?

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);

}
}
a) 16.34
b) 16.566666644
c) 16.46666666666667
d) 16.46666666666666

Asked In Java Rajendra Singh (8 years ago)

Unsolved Read Solution (17)

Is this Puzzle helpful?   (45)   (21) Submit Your Solution Program

(#M40167107) JAVA QUESTION Is Java is a structured programming language? Keep an EYE

State true or false. Java is a structured programming language.

A. True

B. False

Asked In Java Jax (9 Months ago)

Unsolved Read Solution (2)

Is this Puzzle helpful?   (3)   (1) Submit Your Solution

(#M40031854) JAVA QUESTION Keep an EYE

What is the output of this program?

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);
}
}
a) 38 43
b) 39 44
c) 295 300
d) 295.04 300

Asked In Java Rajendra Singh (8 years ago)

Unsolved Read Solution (12)

Is this Puzzle helpful?   (37)   (11) Submit Your Solution Program

(#M40167132) JAVA QUESTION Exceptions 2 Keep an EYE

class ProductNotFoundException extends Exception {

//Some code

}

class Shop {

public void findProduct(int productId) throws ProductNotFoundException {

//some code

throw new ProductNotFoundException();

//some code

}

}

class ABCShop{

public void findProductsList(){

new Shop().findProduct(101);

}

}

Which of the following statement(s) are true for the above code?

A. This code will compile if we add throws ProductNotFoundException in the signature of method findProductsList().
B. This code will compile but returns no output
C. This code will compile if we add a try-catch block in findProductsList().
D. This code will compile if in method findProductsList () returns a list instead of void

Asked In Java Jax (8 Months ago)

Unsolved

Is this Puzzle helpful?   (1)   (1) Submit Your Solution

(#M40167126) JAVA QUESTION static import Keep an EYE

Identify the correct options from the classes provided below.
More than one may be correct.

A. import static edu.ABC.model.Account.*;
public class Loan {
public double getInterest() {
return INTEREST_RATE;
}
}

B. import static edu.ABC.model.Account ;
public class Loan {
public double getInterest() {
return INTEREST_RATE;
}
}

C. import edu.ABC.model.Account ;
public class Loan {
public double getInterest() {
return Account.INTEREST_RATE;
}
}

D. package edu.ABC.model;
public class Loan {
public double getInterest() {
return INTEREST_RATE;
}
}

Asked In Java Jax (8 Months ago)

Unsolved

Is this Puzzle helpful?   (1)   (0) Submit Your Solution Arrays

(#M40167116) JAVA QUESTION Java Polymorphism question Keep an EYE

What is the output of the following program?

class Icecream
{
public void displayName(String s)
{
System.out.println(s+" "+"Icecream");
}
public void describe(String s)
{
System.out.println(s+" "+"Icecream: Ice cream is a sweetened frozen food typically eaten as a snack or dessert. ");
}
}

class Faloodeh extends Icecream
{
public void displayName(String s)
{
System.out.println(s+" "+"Faloodeh ");
}

public void describe(String s)
{
System.out.println(s+" "+"Faloodeh: Faloodeh is often served alongside Persian-style dairy-based ice cream ");
}
}

public class Test
{
public static void main(String arg[])
{
Icecream a = new Faloodeh();
Faloodeh b = (Faloodeh)a;
a.displayName("test");
b.displayName("test");
a.describe("test");
b.describe("test");
}
}

A. test Faloodeh: Faloodeh is often served alongside Persian-style dairy-based ice cream
test Faloodeh: Faloodeh is often served alongside Persian-style dairy-based ice cream
test Faloodeh
test Faloodeh

B. test Faloodeh
test Faloodeh
test Faloodeh: Faloodeh is often served alongside Persian-style dairy-based ice cream
test Faloodeh: Faloodeh is often served alongside Persian-style dairy-based ice cream

C. test Faloodeh
test Faloodeh: Faloodeh is often served alongside Persian-style dairy-based ice cream
test Faloodeh: Faloodeh is often served alongside Persian-style dairy-based ice cream
test Faloodeh

D. test Faloodeh: Faloodeh is often served alongside Persian-style dairy-based ice cream
test Faloodeh
test Faloodeh
test Faloodeh: Faloodeh is often served alongside Persian-style dairy-based ice cream

Asked In Java Jax (8 Months ago)

Unsolved Read Solution (1)

Is this Puzzle helpful?   (0)   (0) Submit Your Solution Output

(#M40167127) JAVA QUESTION Checked vs Unchecked exceptions Keep an EYE

Which exceptions should be explicitly handled or properly propagated?

A. Unchecked exceptions
B. Checked exceptions
C. Errors
C. None of the above

Asked In Java Jax (8 Months ago)

Unsolved Read Solution (1)

Is this Puzzle helpful?   (1)   (0) Submit Your Solution Basics