mindol1004/spring-boot-rest
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

[JAVA-621] core-java-lang-oop-types module

Browse Source 
* Creation

* Moved code from https://www.baeldung.com/java-marker-interfaces

* Moved code from https://www.baeldung.com/java-abstract-class

* Moved code from https://www.baeldung.com/java-this

* Moved code from https://www.baeldung.com/java-nested-classes

* Moved code from https://www.baeldung.com/java-inner-interfaces

* Moved code from https://www.baeldung.com/java-classes-objects

* Moved article references to the new README.md
This commit is contained in:
dupirefr
2020-04-04 10:18:15 +02:00
parent c182eaca8b
commit ea61137058
28 changed files with 50 additions and 7 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
core-java-modules/core-java-lang-oop-3/README.md
View File

@@ -5,9 +5,5 @@ This module contains articles about Object-oriented programming (OOP) in Java
### Relevant Articles:
- [Pass-By-Value as a Parameter Passing Mechanism in Java](https://www.baeldung.com/java-pass-by-value-or-pass-by-reference)
- [Guide to the super Java Keyword](https://www.baeldung.com/java-super)
- [Guide to the this Java Keyword](https://www.baeldung.com/java-this)
- [Nested Classes in Java](https://www.baeldung.com/java-nested-classes)
- [A Guide to Inner Interfaces in Java](https://www.baeldung.com/java-inner-interfaces)
- [Java Classes and Objects](https://www.baeldung.com/java-classes-objects)
- [Java Interfaces](https://www.baeldung.com/java-interfaces)
- [[<-- Prev]](/core-java-modules/core-java-lang-oop-2)[[More -->]](/core-java-modules/core-java-lang-oop-4)

21
core-java-modules/core-java-lang-oop-3/src/main/java/com/baeldung/innerinterfaces/CommaSeparatedCustomers.java
View File

@@ -1,21 +0,0 @@
package com.baeldung.innerinterfaces;
import java.util.ArrayList;
import java.util.List;
import java.util.stream.Collectors;
public class CommaSeparatedCustomers implements Customer.List {
private List<Customer> customers = new ArrayList<Customer>();
@Override
public void Add(Customer customer) {
customers.add(customer);
}
@Override
public String getCustomerNames() {
return customers.stream().map(customer -> customer.getName()).collect(Collectors.joining(","));
}
}

19
core-java-modules/core-java-lang-oop-3/src/main/java/com/baeldung/innerinterfaces/Customer.java
View File

@@ -1,19 +0,0 @@
package com.baeldung.innerinterfaces;
public class Customer {
public interface List {
void Add(Customer customer);
String getCustomerNames();
}
private String name;
public Customer(String name) {
this.name = name;
}
String getName() {
return name;
}
}

3
core-java-modules/core-java-lang-oop-3/src/main/java/com/baeldung/keyword/KeywordDemo.java
View File

@@ -1,7 +1,6 @@
package com.baeldung.keyword;
import com.baeldung.keyword.superkeyword.SuperSub;
import com.baeldung.keyword.thiskeyword.KeywordUnitTest;
/**
* Created by Gebruiker on 5/14/2018.
@@ -9,8 +8,6 @@ import com.baeldung.keyword.thiskeyword.KeywordUnitTest;
public class KeywordDemo {
public static void main(String[] args) {
KeywordUnitTest keyword = new KeywordUnitTest();
SuperSub child = new SuperSub("message from the child class");
}
}

49
core-java-modules/core-java-lang-oop-3/src/main/java/com/baeldung/keyword/thiskeyword/KeywordUnitTest.java
View File

@@ -1,49 +0,0 @@
package com.baeldung.keyword.thiskeyword;
public class KeywordUnitTest {
private String name;
private int age;
public KeywordUnitTest() {
this("John", 27);
this.printMessage();
printInstance(this);
}
public KeywordUnitTest(String name, int age) {
this.name = name;
this.age = age;
}
public void printMessage() {
System.out.println("invoked by this");
}
public void printInstance(KeywordUnitTest thisKeyword) {
System.out.println(thisKeyword);
}
public KeywordUnitTest getCurrentInstance() {
return this;
}
class ThisInnerClass {
boolean isInnerClass = true;
public ThisInnerClass() {
KeywordUnitTest thisKeyword = KeywordUnitTest.this;
String outerString = KeywordUnitTest.this.name;
System.out.println(this.isInnerClass);
}
}
@Override
public String toString() {
return "KeywordTest{" +
"name='" + name + '\'' +
", age=" + age +
'}';
}
}

51
core-java-modules/core-java-lang-oop-3/src/main/java/com/baeldung/objects/Car.java
View File

@@ -1,51 +0,0 @@
package com.baeldung.objects;
public class Car {
private String type;
private String model;
private String color;
private int speed;
public Car(String type, String model, String color) {
this.type = type;
this.model = model;
this.color = color;
}
public String getColor() {
return color;
}
public void setColor(String color) {
this.color = color;
}
public int getSpeed() {
return speed;
}
public int increaseSpeed(int increment) {
if (increment > 0) {
this.speed += increment;
} else {
System.out.println("Increment can't be negative.");
}
return this.speed;
}
public int decreaseSpeed(int decrement) {
if (decrement > 0 && decrement <= this.speed) {
this.speed -= decrement;
} else {
System.out.println("Decrement can't be negative or greater than current speed.");
}
return this.speed;
}
@Override
public String toString() {
return "Car [type=" + type + ", model=" + model + ", color=" + color + ", speed=" + speed + "]";
}
}

20
core-java-modules/core-java-lang-oop-3/src/test/java/com/baeldung/innerinterfaces/InnerInterfaceUnitTest.java
View File

@@ -1,20 +0,0 @@
package com.baeldung.innerinterfaces;
import com.baeldung.innerinterfaces.CommaSeparatedCustomers;
import com.baeldung.innerinterfaces.Customer;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;
import static org.junit.Assert.assertEquals;
@RunWith(JUnit4.class)
public class InnerInterfaceUnitTest {
@Test
public void whenCustomerListJoined_thenReturnsJoinedNames() {
Customer.List customerList = new CommaSeparatedCustomers();
customerList.Add(new Customer("customer1"));
customerList.Add(new Customer("customer2"));
assertEquals("customer1,customer2", customerList.getCustomerNames());
}
}

20
core-java-modules/core-java-lang-oop-3/src/test/java/com/baeldung/nestedclass/AnonymousInner.java
View File

@@ -1,20 +0,0 @@
package com.baeldung.nestedclass;
import org.junit.Test;
abstract class SimpleAbstractClass {
abstract void run();
}
public class AnonymousInner {
@Test
public void run() {
SimpleAbstractClass simpleAbstractClass = new SimpleAbstractClass() {
void run() {
System.out.println("Running Anonymous Class...");
}
};
simpleAbstractClass.run();
}
}

21
core-java-modules/core-java-lang-oop-3/src/test/java/com/baeldung/nestedclass/Enclosing.java
View File

@@ -1,21 +0,0 @@
package com.baeldung.nestedclass;
import org.junit.Test;
public class Enclosing {
private static int x = 1;
public static class StaticNested {
private void run() {
System.out.println("x = " + x);
}
}
@Test
public void test() {
StaticNested nested = new StaticNested();
nested.run();
}
}

22
core-java-modules/core-java-lang-oop-3/src/test/java/com/baeldung/nestedclass/NewEnclosing.java
View File

@@ -1,22 +0,0 @@
package com.baeldung.nestedclass;
import org.junit.Test;
public class NewEnclosing {
private void run() {
class Local {
void run() {
System.out.println("Welcome to Baeldung!");
}
}
Local local = new Local();
local.run();
}
@Test
public void test() {
NewEnclosing newEnclosing = new NewEnclosing();
newEnclosing.run();
}
}

30
core-java-modules/core-java-lang-oop-3/src/test/java/com/baeldung/nestedclass/NewOuter.java
View File

@@ -1,30 +0,0 @@
package com.baeldung.nestedclass;
import org.junit.Test;
public class NewOuter {
int a = 1;
static int b = 2;
public class InnerClass {
int a = 3;
static final int b = 4;
public void run() {
System.out.println("a = " + a);
System.out.println("b = " + b);
System.out.println("NewOuter.this.a = " + NewOuter.this.a);
System.out.println("NewOuter.b = " + NewOuter.b);
System.out.println("NewOuter.this.b = " + NewOuter.this.b);
}
}
@Test
public void test() {
NewOuter outer = new NewOuter();
InnerClass inner = outer.new InnerClass();
inner.run();
}
}

20
core-java-modules/core-java-lang-oop-3/src/test/java/com/baeldung/nestedclass/Outer.java
View File

@@ -1,20 +0,0 @@
package com.baeldung.nestedclass;
import org.junit.Test;
public class Outer {
public class Inner {
public void run() {
System.out.println("Calling test...");
}
}
@Test
public void test() {
Outer outer = new Outer();
Inner inner = outer.new Inner();
inner.run();
}
}

38
core-java-modules/core-java-lang-oop-3/src/test/java/com/baeldung/objects/ObjectsUnitTest.java
View File

@@ -1,38 +0,0 @@
package com.baeldung.objects;
import org.junit.Before;
import org.junit.Test;
import static org.junit.Assert.*;
public class ObjectsUnitTest {
private Car car;
@Before
public void setUp() throws Exception {
car = new Car("Ford", "Focus", "red");
}
@Test
public final void when_speedIncreased_then_verifySpeed() {
car.increaseSpeed(30);
assertEquals(30, car.getSpeed());
car.increaseSpeed(20);
assertEquals(50, car.getSpeed());
}
@Test
public final void when_speedDecreased_then_verifySpeed() {
car.increaseSpeed(50);
assertEquals(50, car.getSpeed());
car.decreaseSpeed(30);
assertEquals(20, car.getSpeed());
car.decreaseSpeed(20);
assertEquals(0, car.getSpeed());
}
}