A compiler is a program that directly executes the source code of a programming language without the need to compile it first.

 A compiler is a program that debugs the source code of a programming language for errors before being executed.

A compiler is a program that translates the source code of a programming language into machine language before executing it.

A compiler is a program that compiles the source code of a programming language into a plain text file.

The front-end is responsible for managing the database of a website.

The front-end focuses on the user's interaction with the interface of a website.

 The front-end is responsible for the logic and server processing on a website.

The front-end takes care of security and protection against attacks on a website.

Integrated Development Environment 

Intelligent Design Engineering 

Interface Design Elements

Interactive Development Exercise

The back-end focuses on the presentation and user interaction with the interface of a website.

The back-end is in charge of managing the database of a website.

The back-end is responsible for the logic and processing of the client on a website.

The back-end focuses on web security and attack protection on a website.

Long-term support

Latest technology stack.

Load testing suite.

Language translation service.

Java Development Kit 

JavaScript Development Kit 

Java Debugging Kit

Java Documentation Kit 

A high-level programming language used for creating web applications.

A framework for the development of multiplatform mobile applications.

An open source integrated development environment for various programming languages.

A library of functions and tools for image processing in Java.

An integrated development environment for the Java programming language.

A framework for the development of web applications in Java.

A compiler for the Java programming language.

 A free and open source implementation of the Java platform.

 A technology company that develops software and hardware for database management and business systems.

An integrated development tool for the Java programming language.

 A high-level programming language used for developing database applications.

A framework for the development of web applications in Java.

Predefined functions that can be called anywhere in the code.

Containers to store data that is used in the program.

Data types used to represent characters and text strings.

Labels used to identify different sections of the code

Use short and meaningless names to save memory space.

Use descriptive names that reflect the purpose of the variable.

Use single letter names to reduce code complexity.

Use names that contain spaces or special characters to make them more distinctive.

Use singular and lowercase names for classes.

Use names in the plural and in lower case for the classes.

Use names in capital letters for the first letter of each word in the class name (camelCase).

Use random names unrelated to the purpose of the class.

Use lowercase names with underscores to separate words.

Use capitalized names with underscores to separate words.

Use names in lower case and without separations for constants.

Use random names unrelated to the value of the constant.

They are words that can only be used in comments within the code.

They are words that are used to define variables in Java.

They are words that have a special meaning in Java and cannot be used for other purposes.

They are words that are used exclusively in the creation of classes in Java.

Use names in lowercase and without separations for the methods.

Use capitalized names for methods.

Use infinitive verbs for the methods, followed by nouns if necessary.

Use random names unrelated to the functionality of the method.

Because proper names make the code harder to understand.

Because the proper names can lead to errors in the syntax of the code.

Because proper names make code easier to understand and maintain.

Because proper names have no impact on code quality.

That variables in Java can change type during the execution of the program.

That Java does not allow the declaration of variables with data types defined by the user.

That Java requires that variables and expressions have defined data types and does not allow operations between different data types, for example numbers and letters

That Java does not allow the declaration of variables with numerical values ​​greater than a certain limit.

An operation that allows the addition of two numeric variables.

An operation that allows one type of data to be converted to another.

An operation that allows you to compare two values ​​and determine if they are equal or not.

An operation that allows joining two or more character strings into one.

To create variables and methods in the code.

To indicate errors in the code that must be corrected.

To hide sections of code that are not used in the execution of the program.

To add notes and explanations in the code that help other programmers to understand it.

It is the order in which instructions are executed in a program.

It is the way in which the operators are organized in a line of code.

It is the order in which the operations in an expression are evaluated.

It is the order in which variables are declared in a program.

==

!=

<

>

+

-

*

/

&&

||

!

&

To compare two objects and determine if they are equal in content and structure.

To convert an object from one data type to another data type.

To get a substring of a character string.

To round a decimal number to a whole number.

If-else

switch

while

for

=

==

!=

+

If-else

switch

while

Method

If-else

Do-while

while

for

A variable whose value can change during the execution of the program.

A keyword used to declare a variable in Java.

An instruction that stops the execution of a program.

A value that cannot change during program execution.

int myArray = {1, 2, 3};

int[] myArray = [1, 2, 3];

int[] myArray = {1, 2, 3};

int myArray[3] = {1, 2, 3};

length()

length

size()

size

int myMatrix = {{1, 2}, {3, 4}};

int[][] myMatrix = {{1, 2}, {3, 4}};

int[][] myMatrix = new int[2]{2};

int myMatrix[2][2] = {{1, 2}, {3, 4}};

for (initialization; condition; increment) { //code to execute }

for (condition; increment; initialization) { //code to execute }

for (increment; initialization; condition) { //code to execute }

for (initialization; increment; condition) { //code to execute }

while (condition) { //code to execute }

while (initialization; condition; increment) { //code to execute }

while (increment; initialization; condition) { //code to execute }

while (initialization; increment; condition) { //code to execute }

do (condition) { //code to execute } while (increment);

do { //code to execute } while (condition);

do (increment) { //code to execute } while (condition);

do (condition) { //code to execute } while (initialization);

A type of variable.

A set of instructions that perform a specific task.

A control structure that allows you to repeat a block of code several times.

A class that is used to create objects.

A value that is used to control the execution of the method.

A value that is used to stop the execution of the program.

A value that is used to indicate whether the method succeeded or failed.

A value that is returned to the program that called the method.

A value that is returned to the program that called it.

A value that is used to control the execution of the method.

A value that is used to stop the execution of the program.

A value that is used to pass information to the method.

print()

scan()

input()

output()

length()

size()

count()

dimension()

parseInt()

parseDouble()

parseBoolean()

parseChar()

Unified Modeling Language

Uniform Model Language

Unique Modeling Logic

User-Managed Language

Print the even numbers from 0 to 9

Print the odd numbers from 0 to 9

Print the numbers from 0 to 9

does nothing

Concatenates the strings "Hello" and "World" and prints them as "Hello World"

Adds the strings "Hello" and "World" and prints them as "Hello World"

Creates an array with the strings "Hello" and "World" and prints them as "Hello World"

Does not compile due to a syntax error

8.5

10

10.5

Compilation error

int[] nums = [5];

int[] nums = new int[5];

int nums[5];

int[] nums = new int[5][];

10 8 6 4 2

10 9 8 7 6 5 4 3 2 1

10 7 4 1

Compilation error

1 3 5 7 9

2 4 6 8 10

1 2 3 4 5

2 5 8

s1 and s2 are the same, s1 and s3 are different

s1 and s2 are different, s1 and s3 are the same

s1, s2 and s3 are equal

s1, s2 and s3 are different

Values ​​assigned to variables that change dynamically during program execution

Random numbers generated by the program

Values ​​used in the code without explanation or clear documentation

Numeric constants defined in the code

A variable can change its value during the execution of the program, while a constant has a fixed value and cannot be modified.

A variable can only be used inside a method, while a constant can be used anywhere in the program.

A variable is declared using the "final" keyword, while a constant need not be declared that way.

A variable can only be of numeric type, while a constant can be of any data type.

Execute an action in a loop while a condition is true

Execute an action only once if a condition is met

Select a specific case to execute based on the value of a variable

Make a comparison between two values ​​and select the greater of them

A type of variable that stores a boolean value.

A control structure that allows iterating over a collection of elements.

A type of variable that stores a numeric value and is used to count repetitions in a loop.

A function that allows you to count the number of characters in a text string.

An element that stores a fixed amount of data.

An element that performs basic mathematical operations.

A variable that increases or decreases its value by a certain amount.

A variable that accumulates values ​​as data is processed in a loop or iteration

Date.getCurrentDate()

Calendar.currentDate()

System.getCurrentDate()

LocalDate.now()

The ability to run multiple tasks in parallel on one operating system.

The implementation of a single level of abstraction in a program.

The division of a system into separate layers, each with a specific responsibility.

The creation of graphical user interfaces with multiple windows.

true

false

Compilation error

Runtime error

Perform arithmetic operations between three operands.

Evaluate a condition and return a value based on the result of the evaluation.

Perform a value assignment to a variable using three operators.

Compare three values ​​and determine which is the largest of them.

true

false

Compilation error

Runtime error

true

false

Compilation error

Runtime error

It can be accessed from any part of the program.

It is limited to the method or block of code where it is declared.

It can be accessed from any class in the same package.

It is available in all methods of the same class.

The value of "y" is printed

A compilation error is generated

The value of "x" is printed

A runtime error is generated

true

false

Compilation error

Runtime error

true

false

Compilation error

Runtime error

A declaration of variables within a class.

A control structure used to repeat a block of code.

A set of instructions that performs a specific task and can be invoked or called.

A data type used to store numeric values.

The for loop is used to iterate over a collection of elements, while the while loop is used to execute a block of code while a condition is true.

The for loop is executed at least once, while the while loop may never be executed.

The for loop can only iterate over arrays, while the while loop can iterate over any type of collection.

The for loop is more efficient in terms of performance than the while loop.

true

false

Compilation error

Runtime error

for

while

foreach

All cycles are equally suitable for this task.

for

while

foreach

None of the above.

The if conditional is used to execute a block of code only if a condition is true.

The for conditional is used to make decisions based on multiple conditions.

The while conditional is used to evaluate an expression and execute a block of code repeatedly.

The switch conditional is used to execute a block of code only if a condition is false.

for

while

foreach

None of the above.

if

else if

else

switch

if

else if

else

switch

Date.getCurrentDate()

Calendar.currentDate()

System.getCurrentDate()

LocalDate.now()

A class in Java is a primitive data type used to store numerical values.

A class in Java is a control structure used to repeat a block of code.

A class in Java is a template that defines the properties and behaviors of an object.

A class in Java is an instruction used to transfer control of the program to a specific point.

The ability of a class to inherit properties and behaviors from multiple classes.

The ability of a class to access private members of other classes.

The ability of a class to have multiple constructors.

The ability of a class to inherit properties and behaviors from a parent class.

public

private

protected

abstract

An object in Java is an instance of a primitive variable.

An object in Java is a variable used to store numerical values.

An object in Java is an instance of a class that has properties and behaviors.

An object in Java is an instruction used to transfer control of the program to a specific point.

The ability to hide the internal details of a class and show only the necessary functionality.

The ability to create multiple objects from a class.

The ability to define a class with attributes and methods.

The ability to inherit properties and behaviors from one class to another.

Simplify the syntax of the Java language.

Increase the efficiency of the program.

Improve the security of the program.

Facilitate the creation of conceptual models and represent entities of the real world.

new

this

great

extends

A child class can inherit both attributes and methods from a parent class.

A child class can inherit only the attributes of a parent class, not the methods.

A child class can inherit only the methods of a parent class, not the attributes.

A child class cannot inherit properties or behaviors from a parent class.

The ability of a class to inherit properties and behaviors from multiple classes.

The ability of a class to access private members of other classes.

The ability of a class to have multiple constructors.

The ability of an object to be referenced by multiple types and to behave differently depending on the reference type.

Use the keyword "polymorphism" when defining a class.

Have at least one abstract class in the program.

Implement an interface in the class that you want to use with polymorphism.

There is no requirement, polymorphism is inherent in the nature of Java programming.

The conversion of an object to another compatible object type.

The creation of a new instance of a class.

The assignment of a value to a variable.

The declaration of a variable with a specific type.

Polymorphism allows the inheritance of properties and behaviors from a parent class.

Polymorphism allows the creation of multiple objects from a class.

Polymorphism allows the same method to have different implementations depending on the type of object.

Polymorphism allows the execution of repetitive blocks of code using cycles.

The ability of a class to inherit properties and behaviors from multiple classes.

The ability of a class to access private members of other classes.

The ability of a class to modify the implementation of a method inherited from a parent class.

The ability of a class to create multiple constructors with different parameters.

int myVariable = 10;

int myVariable = 10;

int = myVariable;

variable myVariable = 10;

A class can have multiple responsibilities.

A class must have only one reason to change.

A class must be able to perform all necessary tasks on a system.

None of the above.

When a class has only one responsibility.

When a class is in charge of more than one functionality.

When a class has no method.

When a class does not use instance variables.

Classes should be open for editing and closed for extension.

Classes must be open for extension and closed for modification.

Classes should be both open for extension and for modification.

None of the above.

When the base class is modified to add new functionality.

When a new functionality is added by creating a subclass and overwriting the necessary methods.

When a new functionality is added by modifying all the methods of the class.

None of the above.

Subclasses must be perfect replacements for their base classes.

A base class must be a substitute for its subclasses.

Subclasses must have at least one additional functionality compared to their base classes.

None of the above.

Classes must implement all interfaces assigned to them.

Classes must not be forced to implement interfaces that they do not use.

All classes must have at least one interface.

None of the above.

When all instances of the subclass can be replaced by instances of the base class without affecting the correctness of the program.

When a base class cannot be replaced by instances of the subclass without affecting the correctness of the program.

When the subclasses have more functionality than the base classes.

None of the above.

When a class implements an interface that it uses.

When a class implements an interface that it does not use.

When a class does not implement any interface.

When all classes implement at least one interface.

High-level classes must depend on low-level classes.

Low-level classes must depend on high-level classes.

High-level classes and low-level classes must depend on abstractions.

High-level classes and low-level classes must not have dependencies.

Represents a group of objects known as items.

Represents a collection of key-value values.

Represents a map of values.

Represents a set of numbers.

When the high-level classes directly depend on the low-level classes.

When high-level classes and low-level classes depend on abstractions.

When the low-level classes depend directly on the high-level classes.

None of the above.

It does not allow duplicate elements.

Items are ordered and may contain duplicates.

Elements are ordered but cannot contain duplicates.

Elements are not ordered and cannot contain duplicates.

The elements are ordered.

Elements can be repeated.

The elements are unique, there can be no duplicates.

The elements must all be of the same type.

Allows random access to elements.

It can be used to implement a LIFO (Last In First Out) data structure.

Elements are processed in a FIFO (First In First Out) order.

It does not allow the insertion of duplicate elements.

They must be handled explicitly in the code or must be declared in the method signature.

They are exceptions that are thrown during the compilation of the code.

It is not mandatory to handle them in the code, although it is recommended.

They cannot be handled or thrown.

Stores duplicate elements.

Stores key-value pairs.

Stores elements in a LIFO (Last In First Out) order.

Stores elements in a FIFO (First In First Out) order.

They are exceptions that are thrown during the compilation of the code.

It is not necessary to handle them or declare them in the signature of the method.

They are exceptions that occur during the execution of the code.

They must be captured or declared in the method signature.

A condition that a program can attempt to capture.

A condition that a program should try to avoid but not capture.

A condition that a program should attempt to capture and correct.

A condition indicating that the execution of the program must be terminated immediately.

IOException

FileNotFoundException

NullPointerException

ClassNotFoundException