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[BAEL-16640] - Split or move core-java-modules/core-java-lang-syntax module

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This commit is contained in:
amit2103
2019-11-03 12:16:31 +05:30
parent 8e5797ef3e
commit ffcf4ca369
15 changed files with 69 additions and 4 deletions
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9
core-java-modules/core-java-lang-oop-4/README.md Normal file
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## Core Java Lang OOP (Part 4)
This module contains articles about Object-oriented programming (OOP) in Java
### Relevant Articles:
- [Static and Dynamic Binding in Java](https://www.baeldung.com/java-static-dynamic-binding)
- [Methods in Java](https://www.baeldung.com/java-methods)
- [Java ‘private’ Access Modifier](https://www.baeldung.com/java-private-keyword)
- [[<-- Prev]](/core-java-modules/core-java-lang-oop-3)

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core-java-modules/core-java-lang-oop-4/pom.xml Normal file
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<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<artifactId>core-java-lang-oop-4</artifactId>
<version>0.1.0-SNAPSHOT</version>
<name>core-java-lang-oop-4</name>
<packaging>jar</packaging>
<parent>
<groupId>com.baeldung</groupId>
<artifactId>parent-java</artifactId>
<version>0.0.1-SNAPSHOT</version>
<relativePath>../../parent-java</relativePath>
</parent>
<dependencies>
<!-- logging -->
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>${log4j.version}</version>
</dependency>
<dependency> <!-- needed to bridge to slf4j for projects that use the log4j APIs directly -->
<groupId>org.slf4j</groupId>
<artifactId>log4j-over-slf4j</artifactId>
<version>${org.slf4j.version}</version>
</dependency>
<!-- test scoped -->
<dependency>
<groupId>org.assertj</groupId>
<artifactId>assertj-core</artifactId>
<version>${assertj-core.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>com.h2database</groupId>
<artifactId>h2</artifactId>
<version>${h2.version}</version>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<finalName>core-java-lang-oop-4</finalName>
<resources>
<resource>
<directory>src/main/resources</directory>
<filtering>true</filtering>
</resource>
</resources>
</build>
<properties>
<assertj-core.version>3.10.0</assertj-core.version>
</properties>
</project>

37
core-java-modules/core-java-lang-oop-4/src/main/java/com/baeldung/basicmethods/PersonName.java Normal file
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package com.baeldung.basicmethods;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;
public class PersonName {
public String getName(String firstName, String lastName) throws RuntimeException {
return firstName + " " + lastName;
}
public String getName(String firstName, String middleName, String lastName) {
if (!middleName.equals("")) {
return firstName + " " + lastName;
}
return firstName + " " + middleName + " " + lastName;
}
public void printFullName(String firstName, String lastName) {
System.out.println(firstName + " " + lastName);
}
public void writeName(String name) throws IOException {
PrintWriter out = new PrintWriter(new FileWriter("OutFile.txt"));
out.println("Name: " + name);
out.close();
}
public static String getNameStatic(String firstName, String lastName) {
return firstName + " " + lastName;
}
public static void callToStaticMethod() {
System.out.println("Name is: " + PersonName.getNameStatic("Alan", "Turing"));
}
}

23
core-java-modules/core-java-lang-oop-4/src/main/java/com/baeldung/binding/Animal.java Normal file
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package com.baeldung.binding;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Created by madhumita.g on 25-07-2018.
*/
public class Animal {
final static Logger logger = LoggerFactory.getLogger(Animal.class);
public void makeNoise() {
logger.info("generic animal noise");
}
public void makeNoise(Integer repetitions) {
while(repetitions != 0) {
logger.info("generic animal noise countdown " + repetitions);
repetitions -= 1;
}
}
}

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core-java-modules/core-java-lang-oop-4/src/main/java/com/baeldung/binding/AnimalActivity.java Normal file
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package com.baeldung.binding;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Created by madhumita.g on 25-07-2018.
*/
public class AnimalActivity {
final static Logger logger = LoggerFactory.getLogger(AnimalActivity.class);
public static void sleep(Animal animal) {
logger.info("Animal is sleeping");
}
public static void sleep(Cat cat) {
logger.info("Cat is sleeping");
}
public static void main(String[] args) {
Animal animal = new Animal();
//calling methods of animal object
animal.makeNoise();
animal.makeNoise(3);
//assigning a dog object to reference of type Animal
Animal catAnimal = new Cat();
catAnimal.makeNoise();
// calling static function
AnimalActivity.sleep(catAnimal);
return;
}
}

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core-java-modules/core-java-lang-oop-4/src/main/java/com/baeldung/binding/Cat.java Normal file
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package com.baeldung.binding;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Created by madhumita.g on 25-07-2018.
*/
public class Cat extends Animal {
final static Logger logger = LoggerFactory.getLogger(Cat.class);
public void makeNoise() {
logger.info("meow");
}
}

59
core-java-modules/core-java-lang-oop-4/src/main/java/com/baeldung/core/privatemodifier/Employee.java Normal file
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package com.baeldung.core.privatemodifier;
public class Employee {
private String privateId;
private String name;
private boolean manager;
public Employee(String id, String name) {
setPrivateId(id);
setName(name);
}
private Employee(String id, String name, boolean managerAttribute) {
this.privateId = id;
this.name = name;
this.privateId = id + "_ID-MANAGER";
}
public void setPrivateId(String customId) {
if (customId.endsWith("_ID")) {
this.privateId = customId;
} else {
this.privateId = customId + "_ID";
}
}
public String getPrivateId() {
return privateId;
}
public boolean isManager() {
return manager;
}
public void elevateToManager() {
if ("Carl".equals(this.name)) {
setManager(true);
}
}
private void setManager(boolean manager) {
this.manager = manager;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public static Employee buildManager(String id, String name) {
return new Employee(id, name, true);
}
}

10
core-java-modules/core-java-lang-oop-4/src/main/java/com/baeldung/core/privatemodifier/ExampleClass.java Normal file
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package com.baeldung.core.privatemodifier;
public class ExampleClass {
public static void main(String[] args) {
Employee employee = new Employee("Bob","ABC123");
employee.setPrivateId("BCD234");
System.out.println(employee.getPrivateId());
}
}

16
core-java-modules/core-java-lang-oop-4/src/main/java/com/baeldung/core/privatemodifier/PublicOuterClass.java Normal file
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package com.baeldung.core.privatemodifier;
public class PublicOuterClass {
public PrivateInnerClass getInnerClassInstance() {
PrivateInnerClass myPrivateClassInstance = this.new PrivateInnerClass();
myPrivateClassInstance.id = "ID1";
myPrivateClassInstance.name = "Bob";
return myPrivateClassInstance;
}
private class PrivateInnerClass {
public String name;
public String id;
}
}

95
core-java-modules/core-java-lang-oop-4/src/test/java/com/baeldung/binding/AnimalActivityUnitTest.java Normal file
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package com.baeldung.binding;
import ch.qos.logback.classic.Level;
import ch.qos.logback.classic.Logger;
import ch.qos.logback.classic.spi.LoggingEvent;
import ch.qos.logback.core.Appender;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.mockito.ArgumentCaptor;
import org.mockito.Captor;
import org.mockito.Mock;
import org.mockito.junit.MockitoJUnitRunner;
import org.slf4j.LoggerFactory;
import static org.hamcrest.CoreMatchers.is;
import static org.junit.Assert.assertThat;
import static org.mockito.Mockito.verify;
/**
*https://gist.github.com/bloodredsun/a041de13e57bf3c6c040
*/
@RunWith(MockitoJUnitRunner.class)
public class AnimalActivityUnitTest {
@Mock
private Appender mockAppender;
@Captor
private ArgumentCaptor<LoggingEvent> captorLoggingEvent;
@Before
public void setup() {
final Logger logger = (Logger) LoggerFactory.getLogger(Logger.ROOT_LOGGER_NAME);
logger.addAppender(mockAppender);
}
@After
public void teardown() {
final Logger logger = (Logger) LoggerFactory.getLogger(Logger.ROOT_LOGGER_NAME);
logger.detachAppender(mockAppender);
}
@Test
public void givenAnimalReference__whenRefersAnimalObject_shouldCallFunctionWithAnimalParam() {
Animal animal = new Animal();
AnimalActivity.sleep(animal);
verify(mockAppender).doAppend(captorLoggingEvent.capture());
final LoggingEvent loggingEvent = captorLoggingEvent.getValue();
assertThat(loggingEvent.getLevel(), is(Level.INFO));
assertThat(loggingEvent.getFormattedMessage(),
is("Animal is sleeping"));
}
@Test
public void givenDogReference__whenRefersCatObject_shouldCallFunctionWithAnimalParam() {
Cat cat = new Cat();
AnimalActivity.sleep(cat);
verify(mockAppender).doAppend(captorLoggingEvent.capture());
final LoggingEvent loggingEvent = captorLoggingEvent.getValue();
assertThat(loggingEvent.getLevel(), is(Level.INFO));
assertThat(loggingEvent.getFormattedMessage(),
is("Cat is sleeping"));
}
@Test
public void givenAnimaReference__whenRefersDogObject_shouldCallFunctionWithAnimalParam() {
Animal cat = new Cat();
AnimalActivity.sleep(cat);
verify(mockAppender).doAppend(captorLoggingEvent.capture());
final LoggingEvent loggingEvent = captorLoggingEvent.getValue();
assertThat(loggingEvent.getLevel(), is(Level.INFO));
assertThat(loggingEvent.getFormattedMessage(),
is("Animal is sleeping"));
}
}

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core-java-modules/core-java-lang-oop-4/src/test/java/com/baeldung/binding/AnimalUnitTest.java Normal file
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package com.baeldung.binding;
import ch.qos.logback.classic.Level;
import ch.qos.logback.classic.Logger;
import ch.qos.logback.classic.spi.LoggingEvent;
import ch.qos.logback.core.Appender;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.mockito.ArgumentCaptor;
import org.mockito.Captor;
import org.mockito.Mock;
import org.mockito.junit.MockitoJUnitRunner;
import org.slf4j.LoggerFactory;
import java.util.List;
import static org.hamcrest.CoreMatchers.is;
import static org.junit.Assert.assertThat;
import static org.mockito.Mockito.times;
import static org.mockito.Mockito.verify;
/**
* Created by madhumita.g on 01-08-2018.
*/
@RunWith(MockitoJUnitRunner.class)
public class AnimalUnitTest {
@Mock
private Appender mockAppender;
@Captor
private ArgumentCaptor<LoggingEvent> captorLoggingEvent;
@Before
public void setup() {
final Logger logger = (Logger) LoggerFactory.getLogger(Logger.ROOT_LOGGER_NAME);
logger.addAppender(mockAppender);
}
@After
public void teardown() {
final Logger logger = (Logger) LoggerFactory.getLogger(Logger.ROOT_LOGGER_NAME);
logger.detachAppender(mockAppender);
}
@Test
public void whenCalledWithoutParameters_shouldCallFunctionMakeNoiseWithoutParameters() {
Animal animal = new Animal();
animal.makeNoise();
verify(mockAppender).doAppend(captorLoggingEvent.capture());
final LoggingEvent loggingEvent = captorLoggingEvent.getValue();
assertThat(loggingEvent.getLevel(), is(Level.INFO));
assertThat(loggingEvent.getFormattedMessage(),
is("generic animal noise"));
}
@Test
public void whenCalledWithParameters_shouldCallFunctionMakeNoiseWithParameters() {
Animal animal = new Animal();
int testValue = 3;
animal.makeNoise(testValue);
verify(mockAppender,times(3)).doAppend(captorLoggingEvent.capture());
final List<LoggingEvent> loggingEvents = captorLoggingEvent.getAllValues();
for(LoggingEvent loggingEvent : loggingEvents)
{
assertThat(loggingEvent.getLevel(), is(Level.INFO));
assertThat(loggingEvent.getFormattedMessage(),
is("generic animal noise countdown "+testValue));
testValue--;
}
}
}

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core-java-modules/core-java-lang-oop-4/src/test/java/com/baeldung/binding/CatUnitTest.java Normal file
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package com.baeldung.binding;
import ch.qos.logback.classic.Level;
import ch.qos.logback.classic.Logger;
import ch.qos.logback.classic.spi.LoggingEvent;
import ch.qos.logback.core.Appender;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.mockito.ArgumentCaptor;
import org.mockito.Captor;
import org.mockito.Mock;
import org.mockito.junit.MockitoJUnitRunner;
import org.slf4j.LoggerFactory;
import static org.hamcrest.CoreMatchers.is;
import static org.junit.Assert.assertThat;
import static org.mockito.Mockito.verify;
/**
* Created by madhumita.g on 01-08-2018.
*/
@RunWith(MockitoJUnitRunner.class)
public class CatUnitTest {
@Mock
private Appender mockAppender;
@Captor
private ArgumentCaptor<LoggingEvent> captorLoggingEvent;
@Before
public void setup() {
final Logger logger = (Logger) LoggerFactory.getLogger(Logger.ROOT_LOGGER_NAME);
logger.addAppender(mockAppender);
}
@After
public void teardown() {
final Logger logger = (Logger) LoggerFactory.getLogger(Logger.ROOT_LOGGER_NAME);
logger.detachAppender(mockAppender);
}
@Test
public void makeNoiseTest() {
Cat cat = new Cat();
cat.makeNoise();
verify(mockAppender).doAppend(captorLoggingEvent.capture());
final LoggingEvent loggingEvent = captorLoggingEvent.getValue();
assertThat(loggingEvent.getLevel(), is(Level.INFO));
assertThat(loggingEvent.getFormattedMessage(),
is("meow"));
}
}