Java quiz with answer

Free Online Java Test Quiz, OCAJP OCPJP Mock Exams

Online Java Test Quiz. Take the FREE Java programming test and SCJP OCPJP OCAJP mock exams. Each mock exam contains multiple Java quiz questions to cover important Java concepts. Quiz results will be displayed along with your score, average score, and quiz question answers.

Click on any of the below given links to start the mock exam online.

Java Language Basics

• Java Language Basics Quiz – 1 (10 Questions)
• Java Language Basics Quiz – 2 (10 Questions)
• Java Language Basics Quiz – 3 (10 Questions)
• Java Language Basics Quiz – 4 (10 Questions)
• Java Language Basics Quiz – 5 (10 Questions)
• Java Language Basics Quiz – 6 (10 Questions)
• Java Operators Quiz – 1 (10 Questions)
• Java Operators Quiz – 2 (10 Questions)
• Java Operators Quiz – 3 (12 Questions)

Flow Control & Exception

• If Else Quiz (10 Questions)
• Assertion Quiz (10 Easy Questions)
• Assertion Quiz (15 Medium/Hard Questions)
• Switch Quiz (12 Questions)
• While, Do While Loop Quiz (20 Questions)
• For Loop Quiz (20 Questions)
• Exception Handling Quiz – 1 (10 Questions)
• Exception Handling Quiz – 2 (10 Questions)
• Exception Handling Quiz – 3 (10 Questions)

Object Oriented Programming

• Java Object Oriented Programming Quiz – 1 (10 Questions)
• Java Object Oriented Programming Quiz – 2 (10 Questions)
• Java Object Oriented Programming Quiz – 3 (10 Questions)
• Java Object Oriented Programming Quiz – 4 (10 Questions)
• Java Object Oriented Programming Quiz – 5 (10 Questions)
• Java Object Oriented Programming Quiz – 6 (10 Questions)
• Java Object Oriented Programming Quiz – 7 (10 Questions)
• Java Object Oriented Programming Quiz – 8 (10 Questions)
• Java Object Oriented Programming Quiz – 9 (10 Questions)
• Java Object Oriented Programming Quiz – 10 (10 Questions)

Declaration Initialization and Access Control

• Java Declaration Initialization and Access Control Quiz – 1 (10 Questions)
• Java Declaration Initialization and Access Control Quiz – 2 (10 Questions)
• Java Declaration Initialization and Access Control Quiz – 3 (10 Questions)
• Java Declaration Initialization and Access Control Quiz – 4 (10 Questions)
• Java Declaration Initialization and Access Control Quiz – 5 (10 Questions)
• Java Declaration Initialization and Access Control Quiz – 6 (10 Questions)
• Java Declaration Initialization and Access Control Quiz – 7 (10 Questions)
• Java Declaration Initialization and Access Control Quiz – 8 (10 Questions)
• Java Declaration Initialization and Access Control Quiz – 9 (10 Questions)
• Java Declaration Initialization and Access Control Quiz – 10 (10 Questions)

Java test contains quiz questions from below given test objectives.

Java Language Basics

• Java package declaration and uses
• Using appropriate access modifiers
• Using import statements to import various packages and classes
• Using command line arguments to run the program and accessing arguments in the code
• Passing objects and primitive values in the methods as parameters
• Understanding how Java garbage collection works along with the behavior of the finalize method of the Object class
• Understanding and setting classpath to refer classes in the program
• Using and creating jar files
• Using various operators like assignment operators, arithmetic operators, instanceof operator, logical and conditional operators

Multithreading

• Creating threads using Thread class and Runnable interface
• Understanding thread states
• Understanding thread locking
• Using wait, notify and notifyAll methods

Java API

• Using wrapper classes
• Understanding autoboxing and unboxing
• Using String, StringBuffer, and StringBuilder classes
• Understanding and using serialization
• Using java.text package to format date, time and numbers
• Using java.util.regex package, using Pattern and Matcher classes
• Understanding the usage of java.io package

Object Oriented Programming

• Creating and using classes and objects
• Understanding inheritance and using interfaces
• Understanding encapsulation and polymorphism (compile time vs runtime)
• Overriding and overloading methods
• Using overloaded constructors, instance variables and static variables, static methods
• Using abstract classes and methods
• Using super and this keywords

Flow control and exception handling

• Understand and use the switch statement
• Understand usage of if, else if and else statements
• Use loops like while loop, for loop, enhanced for loop
• Use labels, break and continue statements
• Understand and use assertions
• Understanding and using checked and unchecked exceptions
• Handling runtime errors
• Understanding usage of throw, throws, catch and finally
• Creating and using custom exceptions

Java Collections & Generics

• Determine when to use which collection
• Using equals and hashCode methods
• Using collections like Set, List, and Map
• Sorting and searching collections
• Usage of type parameters in the class declaration, instance, and local variables and return types

Declaration, Initialization, Access Control

• Declaring classes, interfaces, nested classes and enums
• Declare and use static variables and methods
• Declaring and using default constructor as well as parameterized constructors
• Declaring and initializing primitive variables, arrays, and objects
• Declaring instance and local variables

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Java Quizzes & Trivia

Java is a computer programming language that is concurrent, class based and object oriented. Java applications are converted to bytecode that can run on any Java virtual machine. What do you know about this very prevalent programming language? Take our Java quizzes and find out! What does Java’s philosophy of WORA stand for? What company originally developed Java? What computer languages does Java derive its syntax from? When was Java first released?

What name did the Java project originally go by while in development? In what year was Java released as free and open-source software? What is the most recent version of Java? What does JRE stand for? What is Javadoc? What are the four editions of Java supported by the originating company? What popular smartphone operating system uses Java? What tools does the Java Development Kit include? If you are a programming language genius, or just want to learn more, take our Java quizzes!

Top Trending Quizzes

This is the ultimate Java test for all those Java developer-wannabes who have just began practicing the programming language. It consists of over 93 questions of basically Core Java. So, if you are one of them and want to have a.

Have you practiced Java enough that you are ready to learn advanced Java? Take this advanced Java quiz, and see how much you have learned. This will examine your understanding of JSP, Servlet, and Design patterns. You will get an.

Can you pass this test that has basic Java methods quiz questions and answers? Try your luck, buddy! In order to learn how to use and write methods in Java, we must first start by knowing some of the words. This quiz provides you.

In the following method declaration, what is the return type? public static int myMethod(int count, double value) < return 4; >

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