JAVA | Java Test

JAVA TEST

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try, catch, finally, throw, and throws keywords in java are related to

Event handling
string handling
exception handling
None of the above

Which is a valid keyword in java?

interface
string
Float
unsigned

Which JDBC product components does the Java software provide?

The JDBC driver manager
The JDBC driver test suite
The JDBC-ODBC bridge
All mentioned above

Which of these method of class String is used to check weather a given object starts with a particular string literal?

startsWith()
endsWith()
Starts()
ends()

Which keyword is used by classes to implement an interface?

import
extends
implements
instance of

HTML web pages can be read and rendered by _________.

Compiler
Server
Web Browser
Interpreter

Give the Output for the following program?
class Char {
public static void main(String args[]) {
char ch1, ch2;
ch1 = 88; // code for X
ch2 = 'Y';
System.out.print("ch1 and ch2: ");
System.out.println(ch1 + " " + ch2);
}
}

ch1 and ch2: X Y
ch1 and ch2: x y
ch1 and ch2: 1 3
None of the above

Find whether these two rules are correct or not defined by the constructor
1. Constructor name must be same as its class name.
2. Constructor must have no explicit return type.

True
False

URL is an acronym for?

Uniform Resource Locator
Unified Resource Locator
Uniform Restore Locator
Unified Restore Locator

10.

Choose The Correct HTML Tag To Make A Text Italic

11.

What does the expression float a = 35 / 0 return?

0

Not a Number

NAN

Run time exception

12.

Java has 5 phases, Editing, Compilation, Loading, Verification & Execution. Which of the following unit is responsible for execution?

Compiler

Class Loader

Byte Code Verifier

Java Virtual Machine

13.

JDBC stands for?

Java database connectivity

Java database concept

Java database communications

None of the above

14.

Which models do the JDBC API support for the database access?

Two-tier models

Three-tier models

Both A & B

None of the above

15.

Java does not support _______________?

Inheritance

Multiple inheritance for classes

multiple inheritance of interfaces

compile time polymorphism

16.

Which of these values can a boolean variable contain?

True & False

0 & 1

Any integer value.

Both a & b

17.

What will be the output of the following Java program?
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);
}
}

2

1

4

18.

Which is a perfect example of runtime polymorphism?

Method overloading

Method overriding

Constructor overloading

None of the above

19.

Evaluate the following Java expression, if x=3, y=5, and z=10: ++z + y - y + z + x++

24

23

20

25

20.

Which HTTP method(s) should be used for creating a resource

Only PUT

Only POST

POST or PUT

You can use any HTTP method as long as you document the behavior

21.

In Iterator, hasMoreElements() method of Enumeration has been changed to:

hasNextElement()

isNext()

hasNext()

name remains same

22.

Which option is not a RESTful API constraint?

Code on demand

The use of a client-server model

A stateless request-response cycle

Service orchestration

23.

_______ is not a flow control statement in Java.

break

continue

exit()

return

24.

What is the output for the following code, when you passed letsfindcourse at run time?
class CommandLineExample{
public static void main(String args[]){
System.out.println(""Your first argument is: ""+args[0]);
}
}

java

CommandLineExample{

arg[0]

letsfindcourse

25.

Which of these is a super class of all errors and exceptions in the Java language?

Catchable

Throwable

RunTimeExceptions

None of the above

26.

Which of those isn’t an interface within the Collections Framework?

Collection

Group

Set

List

27.

What will be the output of the following Java program?
class abc
{
public static void main(String args[])
{
if(args.length>0)
System.out.println(args.length);
}
}

The snippet compiles, runs and prints 0

The snippet compiles, runs and prints 1

The snippet does not compile

The snippet compiles and runs but does not print anything

28.

Which of the following is not an HTTP method?

CREATE

POST

PUT

OPTION

29.

What is the significance of using instanceOf operator and getClass() in equals method?

InstanceOf can return true for comparing current class with its subclass as well

getClass() can return true only if exactly same class is compared

getClass() can return false when compared with subclass

All of the above

30.

What is the valid data type for variable "a" to print "Hello World"?
switch(a)
{
System.out.println("Hello World");
}

int and float

byte and short

char and long

byte and char

31.

What must be enabled in order for a RESTful web service to receive invocations from different domains, subdomains or ports?

SSL

Headers

Cache control

CORS

32.

Which of these method of Thread class is used to find out the priority given to a thread?

get()

ThreadPriority()

getPriority()

getThreadPriority()

33.

The insistence that RESTful APIs have URLs that identify resources in a consistent and predictable manner is known as:

The RESTful naming convention

The uniform interface constraint

The RESTful consistency constraint

The RESTful pattern matching convention

34.

What will be the output of the following Java program, Command line exceution is done as – “java Output This is a command Line”?
class Output
{
public static void main(String args[])
{
System.out.print(""args[3]"");
}
}

java

this

is

command

35.

Which of the following is not true?

An interface can extend another interface.

A class which is implementing an interface must implement all the methods of the interface.

An interface is a solution for multiple inheritance in java.

An interface can implement another interface.

36.

Which one of the following is not true?

A class containing abstract methods is called an abstract class.

Abstract methods should be implemented in the derived class.

An abstract class cannot have non-abstract methods.

A class must be qualified as ‘abstract’ class, if it contains one abstract method.

37.

What will be the output of the following Java code?
class multithreaded_programing
{
public static void main(String args[])
{
Thread t = Thread.currentThread();
t.setName("New Thread");
System.out.println(t);
}
}

Thread[5,main]

Thread[New Thread,5]

Thread[main,5,main]

Thread[New Thread,5,main]

38.

Which of the following is an iteration statement?

switch

if-else

if

do-while

39.

What will be the output of the following code –
import java.util.Iterator;
import java.util.Map;
import java.util.concurrent.ConcurrentSkipListMap;

public class ConcurrentSkipMapTest {

public static void main (String args[])
{
Map<Integer,String> concurrentSkipListMap= new ConcurrentSkipListMap<Integer,String>();
concurrentSkipListMap.put(11,”audi”);
concurrentSkipListMap.put(44,”null”);

Iterator<Integer> keyIterator = concurrentSkipListMap.keySet().iterator();
while (keyIterator.hasNext())
{
System.out.print(keyIterator.next());

}
}

}

0 null

1 null

2 null

11 44

40.

Which of the following best describes REST?

REST is a web service standard

REST is a cloud-native API framework

REST is a microservices-based protocol

REST is an architectural style

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JAVA TEST

try, catch, finally, throw, and throws keywords in java are related to

Which is a valid keyword in java?

Which JDBC product components does the Java software provide?

Which of these method of class String is used to check weather a given object starts with a particular string literal?

Which keyword is used by classes to implement an interface?

HTML web pages can be read and rendered by _________.

Give the Output for the following program? class Char { public static void main(String args[]) { char ch1, ch2; ch1 = 88; // code for X ch2 = 'Y'; System.out.print("ch1 and ch2: "); System.out.println(ch1 + " " + ch2); } }

Find whether these two rules are correct or not defined by the constructor 1. Constructor name must be same as its class name. 2. Constructor must have no explicit return type.

URL is an acronym for?

Choose The Correct HTML Tag To Make A Text Italic

What does the expression float a = 35 / 0 return?

Java has 5 phases, Editing, Compilation, Loading, Verification & Execution. Which of the following unit is responsible for execution?

JDBC stands for?

Which models do the JDBC API support for the database access?

Java does not support _______________?

Which of these values can a boolean variable contain?

What will be the output of the following Java program? 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); } }

Which is a perfect example of runtime polymorphism?

Evaluate the following Java expression, if x=3, y=5, and z=10: ++z + y - y + z + x++

Which HTTP method(s) should be used for creating a resource

In Iterator, hasMoreElements() method of Enumeration has been changed to:

Which option is not a RESTful API constraint?

_______ is not a flow control statement in Java.

What is the output for the following code, when you passed letsfindcourse at run time? class CommandLineExample{ public static void main(String args[]){ System.out.println(""Your first argument is: ""+args[0]); } }

Which of these is a super class of all errors and exceptions in the Java language?

Which of those isn’t an interface within the Collections Framework?

What will be the output of the following Java program? class abc { public static void main(String args[]) { if(args.length>0) System.out.println(args.length); } }

Which of the following is not an HTTP method?

What is the significance of using instanceOf operator and getClass() in equals method?

What is the valid data type for variable "a" to print "Hello World"? switch(a) { System.out.println("Hello World"); }

What must be enabled in order for a RESTful web service to receive invocations from different domains, subdomains or ports?

Which of these method of Thread class is used to find out the priority given to a thread?

The insistence that RESTful APIs have URLs that identify resources in a consistent and predictable manner is known as:

What will be the output of the following Java program, Command line exceution is done as – “java Output This is a command Line”? class Output { public static void main(String args[]) { System.out.print(""args[3]""); } }

Which of the following is not true?

Which one of the following is not true?

What will be the output of the following Java code? class multithreaded_programing { public static void main(String args[]) { Thread t = Thread.currentThread(); t.setName("New Thread"); System.out.println(t); } }

Which of the following is an iteration statement?

Which of the following best describes REST?

Assessment complete! Thank you for you time. We are redirecting you to the result page, Please click on 'SUBMIT'

Give the Output for the following program?
class Char {
public static void main(String args[]) {
char ch1, ch2;
ch1 = 88; // code for X
ch2 = 'Y';
System.out.print("ch1 and ch2: ");
System.out.println(ch1 + " " + ch2);
}
}

Find whether these two rules are correct or not defined by the constructor
1. Constructor name must be same as its class name.
2. Constructor must have no explicit return type.

What will be the output of the following Java program?
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);
}
}

What is the output for the following code, when you passed letsfindcourse at run time?
class CommandLineExample{
public static void main(String args[]){
System.out.println(""Your first argument is: ""+args[0]);
}
}

What will be the output of the following Java program?
class abc
{
public static void main(String args[])
{
if(args.length>0)
System.out.println(args.length);
}
}

What is the valid data type for variable "a" to print "Hello World"?
switch(a)
{
System.out.println("Hello World");
}

What will be the output of the following Java program, Command line exceution is done as – “java Output This is a command Line”?
class Output
{
public static void main(String args[])
{
System.out.print(""args[3]"");
}
}

What will be the output of the following Java code?
class multithreaded_programing
{
public static void main(String args[])
{
Thread t = Thread.currentThread();
t.setName("New Thread");
System.out.println(t);
}
}

Assessment complete! Thank you for you time.
We are redirecting you to the result page, Please click on 'SUBMIT'