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Frequently Asked Java interview questions and answers for freshers

(#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)

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(#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 (2 Months ago)

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(#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 (8 years ago)

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(#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 (2 Months ago)

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(#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 (2 Months ago)

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(#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 (2 Months ago)

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(#M40167133) JAVA QUESTION try, catch and finally Keep an EYE

Which of the given fact(s) are true with respect to the blocks and order of execution of blocks in "Exceptions"?

A. The try block can be followed by finally block and then followed by the catch blocks
B. One or more catch blocks which are exception handlers are placed immediately after the try block
C. Catch block has an argument which can accept an argument of any exception type and it is the name of a class that inherits from the Throwable class
D. The finally block always executes when the try block exits or when an exception occurs
E. The finally block is not executed when there is a return statement in the try block

Asked In Java Jax (2 Months ago)

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(#M40031852) JAVA QUESTION Keep an EYE

Which of the following are legal lines of Java code?
1. int w = (int)888.8;
2. byte x = (byte)100L;
3. long y = (byte)100;
4. byte z = (byte)100L;
a) 1 and 2
b) 2 and 3
c) 3 and 4
d) All statements are correct.

Asked In Java Rajendra Singh (8 years ago)

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(#M40167136) JAVA QUESTION Checked vs unchecked Exceptions Keep an EYE

_____ exceptions are automatically propagated. To propogate _____ exceptions, the method should explicitly throw the exception using the throws keyword.

A. checked, unchecked
B. unchecked, checked

Asked In Java Jax (2 Months ago)

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(#M40167135) JAVA QUESTION Exceptions 3 Keep an EYE

Predict the output

import java.io.IOException;

public class Exception1{

public static void main(String[] args)

{

try

{

throw new IOException();

}

catch(IOException | Exception ex)

{

System.out.println(ex + " handled ");

}

}

}

A. program won't compile
B. runtime exception
C. program will compile
D. None of the above

Asked In Java Jax (2 Months ago)

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