Question 1

Within a web.xml which maps the servlet com.tcs.login.LoginServlet to the url /utils/LoginServlet

technology programming languages

login com.tcs.login.LoginServlet login /utils/L
com.tcs.login.LoginServlet /utils/LoginServlet
com.tcs.login.LoginServlet /utils/LoginServlet
login com.tcs.login.LoginServlet login /utils/LoginServlet

Answer

Correct Option: A

Question 2

Which element guarantees a servlet will be loaded on the start up of the web application

technology programming languages

true
1
0

Answer

Correct Option: B

Question 3

How to define a session time out of 10 minutes in web.xml

technology programming languages

10
600
600
60 session-invalid-time>

Answer

Correct Option: A

Question 4

Which is the correct definition of servlet init parameter in web.xml?

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login com.tcs.login.LoginServlet mailId [email protected]
login com.tcs.login.LoginServlet mailId [email protected]
login com.tcs.login.LoginServlet mailId
login com.tcs.login.LoginServlet mailId [email protected]

Answer

Correct Option: A

Question 5

package polymorphism;class TestPolymorphismSuper1 { String name; TestPolymorphism2 testPoly() { TestPolymorphism2 TS = new TestPolymorphism2(); TS.name ="tcs"; return TS; }}public class TestPolymorphism2 extends TestPolymorphismSuper1{ TestPolymorphism2 testPoly() { TestPolymorphism2 TSub = new TestPolymorphism2(); TSub.name = "UX"; return TSub; } public static void main(String[] args) { TestPolymorphismSuper1 TSuper = new TestPolymorphism2(); TSuper.testPoly(); System.out.println(TSuper.name); }}

technology programming languages

UX
tcs
null
Exception

Answer

Correct Option: C

Question 6

package polymorphism;class TestSup { static int p = 100;}public class TestPoly extends TestSup { public static void main(String[] args) { TestPoly TP = new TestPoly(); TP.p = 400; TestSup TS = new TestSup(); TS.p = 100; TestSup TSP = new TestPoly(); TSP.p = 500; System.out.print("TestSup = " + TestSup.p); System.out.print(" ,TestPoly = " + TestPoly.p); System.out.print(" ,TP = " + TP.p); System.out.print(" ,TS = " + TS.p); System.out.print(" ,TSP = " + TSP.p); }}

technology programming languages

TestSup = 100 ,TestPoly = 400 ,TP = 500 ,TS = 500 ,TSP = 500
TestSup = 500 ,TestPoly = 500 ,TP = 500 ,TS = 500 ,TSP = 500
TestSup = 100 ,TestPoly = 400 ,TP = 400 ,TS = 100 ,TSP = 500
TestSup = 500 ,TestPoly = 400 ,TP = 500 ,TS = 100 ,TSP = 400

Answer

Correct Option: B

Question 7

package polymorphism;class TestSuperr { double TestPoly(long a, float b, int c) { return ((a + b) * c); }}public class TestPolym extends TestSuperr { double TestPoly(long a, double b, int c) { return (a + b + c); } public static void main(String[] args) { TestSuperr TSU = new TestPolym(); double p = TSU.TestPoly(11, 9, 10); System.out.print("p = " + p); p1 = TSU.TestPoly(11, 9.0, 10); System.out.print(" ,p1 = " + p1); }}

technology programming languages

p = 200.0, p1 = 30.0
p = 200.0, p1 = 200.0
p = 30.0, p1 = 30.0
Compiler Error

Answer

Correct Option: D

Question 8

package polymorphism; class TestSupe { static int p = 100; } public class TestPoly1 extends TestSupe { static int p =1000; public static void main(String[] args) { TestPoly1 TP = new TestPoly1(); TP.p = 400; TestSupe TS = new TestSupe(); TS.p = 300; TestSupe TSP = new TestPoly1(); TSP.p = 500; System.out.print("TestSupe = " + TestSupe.p); System.out.print(" ,TestPoly = " + TestPoly1.p); System.out.print(" ,TP = " + TP.p); System.out.print(" ,TS = " + TS.p); System.out.print(" ,TSP = " + TSP.p); } }

technology programming languages

TestSupe = 300 ,TestPoly = 400 ,TP = 400 ,TS = 300 ,TSP = 500
TestSupe = 500 ,TestPoly = 400 ,TP = 400 ,TS = 500 ,TSP = 500
TestSupe = 500 ,TestPoly = 400 ,TP = 400 ,TS = 300 ,TSP = 500
TestSupe = 300 ,TestPoly = 400 ,TP = 500 ,TS = 500 ,TSP = 500

Answer

Correct Option: B

Question 9

What is a method's signature?

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The signature of a method is the name of the method the type of its return value.
The signature of a method is the name of the method and the names of its parameters.
The signature of a method is the name of the method and the data types of its parameters.
The signature of a method is the name of the method, its parameter list, and its return type.

Answer

Correct Option: D

Question 10

What is an advantage of polymorphism?

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The same program logic can be used with objects of several related types.
Variables can be re-used in order to save memory.
Constructing new objects from old objects of a similar type saves time.
Polymorphism is a dangerous aspect of inheritance and should be avoided.

Answer

Correct Option: A

Question 11

Which is not a java keyword?

technology programming languages

for
break
continue
Structure

Answer

Correct Option: D

Question 12

What command is used to compile a program in Java

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javac
java
run java
javas

Answer

Correct Option: A

Question 13

How many objects of a given class can there be in a program?

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One per defined class.
One per constructor definition.
As many as the program needs.
One per program

Answer

Correct Option: C

Question 14

Distributed programming helps in:

technology programming languages

balance resource loading
lower cost of development since clients can access remote codes for services
operator overloading
none of these

Answer

Correct Option: A,B

Question 15

Is it OK if a class definition implements two interfaces, each of which has the same definition for a constant PI?

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True
False

Answer

Correct Option: B

Question 16

Is "java.lang.Object" a valid class in java?

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True
False

Answer

Correct Option: A

Question 17

"JAVA" stands for Just Another Virtual Analyser

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True
False

Answer

Correct Option: B

Question 18

The garbage collector will run immediately when the system runs out of memory.

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True
False

Answer

Correct Option: B

Question 19

Current version of java is 1.5

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True
False

Answer

Correct Option: B

Question 20

What is dependency injection?

technology programming languages

A pattern (design) whereby collaborators are passed into an object from the outside - the object does not allocate them for itself.
It is a pattern in which the child class inherit the parent class properties
It is a type of operator overloading in java
It represents the compile time and run time polymorphism in java

Answer

Correct Option: A

Description: programming languages Online Quiz - 185
Number of Questions: 20
Created by: Aliensbrain Bot
Tags: programming languages

programming languages Online Quiz - 185

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