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Java interview questions and answers for freshers Page 3

(#M40167118) JAVA QUESTION Number of string objects Keep an EYE

public String makingStrings()
{
String str = "Welcome";

str = str.substring(1, 5);

str = str.toUpperCase();

return str;
}

How many String objects are created in the heap when this method is invoked?

A. 4
B. 2
C. 3
D. 1

Asked In Java Jax (3 years ago)

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(#M40167117) JAVA QUESTION Access Modifiers Keep an EYE

Given a method in a public class, ________ access modifier must be used to restrict access to that method to only the other members of the same class.

A. final
B. private
C. protected
D. default

Asked In Java Jax (3 years 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 (3 years ago)

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(#M40167115) JAVA QUESTION Inheritance relationship in Java Keep an EYE

Which of the following statements are correct with respect to inheritance relationship in java?

A. object of subclass referenced by super class type can invoke super class methods
B. object of subclass referenced by super class type can access newly defined sub class variables
C. object of subclass referenced by super class type can access super class variables
D. object of subclass referenced by super class type can invoke overridden sub class methods
E. object of subclass referenced by super class type can invoke newly defined sub class methods

Asked In Java Jax (3 years ago)

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(#M40167114) JAVA QUESTION Java question Keep an EYE

What will be the output of the following program?

class A
{
public void test()
{
System.out.println("Class A");
}
}
class Trial extends A
{
public void test()
{
System.out.println("Class Trial");
}
public static void main(String args[])
{
Trial object = (Trial)new A();
object.test();
}
}

A. Runtime Error
B. Compile Time Error
C. Class A
D. Class Trial

Asked In Java Jax (3 years ago)

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(#M40167113) JAVA QUESTION instanceof question Keep an EYE

What will be the output of the program?

class Tree { }

class Pine extends Tree { }

class Oak extends Tree { }

public class Forest1
{
public static void main (String [] args)
{
Tree tree = new Pine();

if( tree instanceof Pine )
System.out.println ("Pine");

else if( tree instanceof Tree )
System.out.println ("Tree");

else if( tree instanceof Oak )
System.out.println ( "Oak" );

else
System.out.println ("Oops ");
}
}

A. Oops
B. Tree
C. Pine
D. Forest

Asked In Java Jax (3 years ago)

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(#M40167112) JAVA QUESTION Java question Keep an EYE

Which three statements are true?

A. A method with the same signature as a private final method in class X can be implemented in a subclass of X.
B. A protected method in class X can be overridden by a subclass of A only if the subclass is in the same package as X.
C. A private static method can be called only within other static methods in class X.
D. A public static method in class X can be called by a subclass of X without explicitly referencing the class X.
E. A protected method in class X can be overridden by any subclass of X.
F. A final method in class X can be abstract if and only if X is abstract.
G. A non-static public final method in class X can be overridden in any subclass of X.

Asked In Java Jax (3 years ago)

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(#M40167111) JAVA QUESTION Default method in java Keep an EYE

A default method in an interface can be either private or public or protected. State True or False.

Asked In Java Jax (3 years ago)

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(#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 (3 years ago)

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(#M40167090) JAVA QUESTION Keep an EYE

There was an addition given as follows
SATURN + URANUS = PLANETS
the solution is not encoding the entire problem but to find coding for 3 alphabets

Asked In Java ajay (4 years ago)

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