Java Quiz

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Java Mastery Quiz

Test your knowledge of Java with our engaging 18-question quiz! Perfect for students, professionals, and anyone looking to brush up on their Java skills.

Key Features:

Multiple choice questions
In-depth explanations for each answer
Ideal for all levels of Java expertise

18 Questions4 MinutesCreated by CodingHero57

Which method is used to specify before any lines that use the PrintWriter

SetPageType()

SetContextType()

SetContentType()

SetResponseType()

Which of the following is FALSE about abstract classes in Java

If we derive an abstract class and do not implement all the abstract methods, then the derived class should also be marked as abstract using 'abstract' keyword

Abstract classes can have constructors

A class can be made abstract without any abstract method

A class can inherit from multiple abstract classes

Type IV JDBC driver is a driver

Which is written in C++

Which requires an intermediate layer

Which communicates through Java sockets

Which translates JDBC function calls into API not native to DBMS

Which of these keyword can be used in subclass to call the constructor of superclass ?

Super

This

Extent

Extends

Which of these is supported by method overriding in JAVA ?

Abstraction

Encapsulation

Polymorphism

None

What will happen if two thread of the same priority are called to be processed simultaneously ?

Anyone will be executed first lexograohically

Both of them will be executed simultaneously

None will be executed

Depends on the operating system

We can make a class abstract by

Declaring it abstract using the virtual keyword

Making at least one member function as pure virtual function

Making at least one member function as virtual function

Making all member function const

Among these expressions, which is(are) of type String?

“0”

�ab” + “cd”

�0’

Both (A) and (B) above (e) (A), (B) and (C) above.

The correct order of the declarations in a Java program is,

Package declaration, import statement, class declaration

Import statement, package declaration, class declaration

Import statement, class declaration, package declaration

Class declaration, import statement, package declaration

Class declaration, package declaration, import statement.

Which of the following is not a component of Java Integrated Development Environment (IDE)?

Net Beans

Borland’s Jbuilder

Symantec’s Visual Café

Microsoft Visual Fox Pro

Re-implementing an inherited method in a sub class to perform a different task from the parent class is called

Identify, from among the following, the incorrect descriptions related to Java :

Java Virtual Machine translates byte code into its own system’s machine language and runs the resulting machine code

The arithmetic operations *, /, %, + and – have the same level of precedence

Comments do not cause any action to be performed during the program execution

All variables must be given a type when they are declared

Java variable names are case-sensitive

Which of the following statements about Java Threads is correct?

Every java application is not multithreaded.

Ready, running and sleeping are three states that a thread can be in during its life cycle

Java’s garbage collector runs as a high priority thread

What is the sequence of major events in the life of an applet?

What is the fundamental unit of information of writer streams?

Characters

Bytes

Files

Records

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