Merge branch 'master' into akka

# Conflicts: # pom.xml
2018-12-16 20:43:48 +01:00
parent 997f1fcb59 bd32693a46
commit b29bdd5422
260 changed files with 4752 additions and 1862 deletions
@@ -1,4 +1,4 @@
-package com.baeldung.string;
+package com.baeldung.algorithms.string;

 import java.util.HashSet;
 import java.util.Set;
@@ -1,4 +1,4 @@
-package com.baeldung.string;
+package com.baeldung.algorithms.string;

 import static org.junit.Assert.assertEquals;
 import java.util.HashSet;
@@ -33,6 +33,11 @@
            <artifactId>jgrapht-core</artifactId>
            <version>${org.jgrapht.core.version}</version>
        </dependency>
+        <dependency>
+        	<groupId>org.jgrapht</groupId>
+        	<artifactId>jgrapht-ext</artifactId>
+        	<version>${org.jgrapht.ext.version}</version>
+        </dependency>
        <dependency>
            <groupId>pl.allegro.finance</groupId>
            <artifactId>tradukisto</artifactId>
@@ -83,6 +88,7 @@
        <commons-math3.version>3.6.1</commons-math3.version>
        <tradukisto.version>1.0.1</tradukisto.version>
        <org.jgrapht.core.version>1.0.1</org.jgrapht.core.version>
+        <org.jgrapht.ext.version>1.0.1</org.jgrapht.ext.version>
        <org.assertj.core.version>3.9.0</org.assertj.core.version>
        <commons-codec.version>1.11</commons-codec.version>
    </properties>
@@ -0,0 +1,47 @@
+package com.baeldung.jgrapht;
+
+import static org.junit.Assert.assertTrue;
+import java.awt.Color;
+import java.awt.image.BufferedImage;
+import java.io.File;
+import java.io.IOException;
+import javax.imageio.ImageIO;
+import org.jgrapht.ext.JGraphXAdapter;
+import org.jgrapht.graph.DefaultDirectedGraph;
+import org.jgrapht.graph.DefaultEdge;
+import org.junit.Before;
+import org.junit.Test;
+import com.mxgraph.layout.mxCircleLayout;
+import com.mxgraph.layout.mxIGraphLayout;
+import com.mxgraph.util.mxCellRenderer;
+
+public class GraphImageGenerationUnitTest {
+    static DefaultDirectedGraph<String, DefaultEdge> g;
+
+    @Before
+    public void createGraph() throws IOException {
+        File imgFile = new File("src/test/resources/graph.png");
+        imgFile.createNewFile();
+        g = new DefaultDirectedGraph<String, DefaultEdge>(DefaultEdge.class);
+        String x1 = "x1";
+        String x2 = "x2";
+        String x3 = "x3";
+        g.addVertex(x1);
+        g.addVertex(x2);
+        g.addVertex(x3);
+        g.addEdge(x1, x2);
+        g.addEdge(x2, x3);
+        g.addEdge(x3, x1);
+    }
+
+    @Test
+    public void givenAdaptedGraph_whenWriteBufferedImage_ThenFileShouldExist() throws IOException {
+        JGraphXAdapter<String, DefaultEdge> graphAdapter = new JGraphXAdapter<String, DefaultEdge>(g);
+        mxIGraphLayout layout = new mxCircleLayout(graphAdapter);
+        layout.execute(graphAdapter.getDefaultParent());
+        File imgFile = new File("src/test/resources/graph.png");
+        BufferedImage image = mxCellRenderer.createBufferedImage(graphAdapter, null, 2, Color.WHITE, true, null);
+        ImageIO.write(image, "PNG", imgFile);
+        assertTrue(imgFile.exists());
+    }
+}
@@ -34,7 +34,7 @@ public class MergeSort {

        while (i < left && j < right) {

-            if (l[i] < r[j])
+            if (l[i] <= r[j])
                a[k++] = l[i++];
            else
                a[k++] = r[j++];
@@ -0,0 +1,12 @@
+#!/usr/local/bin/java --source 11
+
+import java.util.Arrays;
+
+public class Addition
+{
+    public static void main(String[] args) {
+        System.out.println(Arrays.stream(args)
+          .mapToInt(Integer::parseInt)
+          .sum());
+    }
+}
@@ -0,0 +1,5 @@
+package com.baeldung.interfaces.multiinheritance;
+
+public abstract interface Fly{
+    void fly();
+}
@@ -0,0 +1,5 @@
+package com.baeldung.interfaces.multiinheritance;
+
+public interface Transform {
+    void transform();
+}
@@ -0,0 +1,13 @@
+package com.baeldung.interfaces.multiinheritance;
+
+public class Vehicle implements Fly, Transform {
+    @Override
+    public void fly() {
+        System.out.println("I can Fly!!");
+    }
+
+    @Override
+    public void transform() {
+        System.out.println("I can Transform!!");
+    }
+}
@@ -0,0 +1,21 @@
+package com.baeldung.interfaces.polymorphysim;
+
+public class Circle implements Shape {
+
+    private double radius;
+
+    public Circle(double radius){
+        this.radius = radius;
+    }
+
+    @Override
+    public String name() {
+        return "Circle";
+    }
+
+    @Override
+    public double area() {
+        return Math.PI * (radius * radius);
+    }
+
+}
@@ -0,0 +1,22 @@
+package com.baeldung.interfaces.polymorphysim;
+
+import java.util.ArrayList;
+
+public class DisplayShape {
+
+    private ArrayList<Shape> shapes;
+
+    public DisplayShape() {
+        shapes = new ArrayList<>();
+    }
+
+    public void add(Shape shape) {
+        shapes.add(shape);
+    }
+
+    public void display() {
+        for (Shape shape : shapes) {
+            System.out.println(shape.name() + " area: " + shape.area());
+        }
+    }
+}
@@ -0,0 +1,15 @@
+package com.baeldung.interfaces.polymorphysim;
+
+public class MainPolymorphic {
+    public static void main(String[] args){
+
+        Shape circleShape = new Circle(2);
+        Shape squareShape = new Square(2);
+
+        DisplayShape displayShape = new DisplayShape();
+        displayShape.add(circleShape);
+        displayShape.add(squareShape);
+
+        displayShape.display();
+    }
+}
@@ -0,0 +1,6 @@
+package com.baeldung.interfaces.polymorphysim;
+
+public interface Shape {
+    public abstract String name();
+    public abstract double area();
+}
@@ -0,0 +1,20 @@
+package com.baeldung.interfaces.polymorphysim;
+
+public class Square implements Shape {
+
+    private double width;
+
+    public Square(double width) {
+        this.width = width;
+    }
+
+    @Override
+    public String name() {
+        return "Square";
+    }
+
+    @Override
+    public double area() {
+        return width * width;
+    }
+}
@@ -0,0 +1,26 @@
+package com.baeldung.interfaces;
+
+import com.baeldung.interfaces.polymorphysim.Circle;
+import com.baeldung.interfaces.polymorphysim.Shape;
+import com.baeldung.interfaces.polymorphysim.Square;
+import org.assertj.core.api.Assertions;
+import org.junit.Test;
+
+public class PolymorphysimUnitTest {
+
+    @Test
+    public void whenInterfacePointsToCircle_CircleAreaMethodisBeingCalled(){
+        double expectedArea = 12.566370614359172;
+        Shape circle = new Circle(2);
+        double actualArea = circle.area();
+        Assertions.assertThat(actualArea).isEqualTo(expectedArea);
+    }
+
+    @Test
+    public void whenInterfacePointsToSquare_SquareAreaMethodisBeingCalled(){
+        double expectedArea = 4;
+        Shape square = new Square(2);
+        double actualArea = square.area();
+        Assertions.assertThat(actualArea).isEqualTo(expectedArea);
+    }
+}
@@ -0,0 +1,37 @@
+package com.baeldung.list.multidimensional;
+
+import java.util.ArrayList;
+
+public class ArrayListOfArrayList {
+
+    public static void main(String args[]) {
+
+        int vertex = 5;
+        ArrayList<ArrayList<Integer>> graph = new ArrayList<>(vertex);
+
+        //Initializing each element of ArrayList with ArrayList
+        for(int i=0; i< vertex; i++) {
+            graph.add(new ArrayList<Integer>());
+        }
+
+        //We can add any number of columns to each row
+        graph.get(0).add(1);
+        graph.get(0).add(5);
+        graph.get(1).add(0);
+        graph.get(1).add(2);
+        graph.get(2).add(1);
+        graph.get(2).add(3);
+        graph.get(3).add(2);
+        graph.get(3).add(4);
+        graph.get(4).add(3);
+        graph.get(4).add(5);
+
+        //Printing all the edges
+        for(int i=0; i<vertex; i++) {
+            for(int j=0; j<graph.get(i).size(); j++) {
+                System.out.println("Edge between vertex "+i+"and "+graph.get(i).get(j));
+            }
+        }
+    }
+
+}
@@ -0,0 +1,45 @@
+package com.baeldung.list.multidimensional;
+
+import java.util.ArrayList;
+
+public class ThreeDimensionalArrayList {
+
+    public static void main(String args[]) {
+        
+        int x_axis_length = 2;
+        int y_axis_length = 2;
+        int z_axis_length = 2;
+        ArrayList< ArrayList< ArrayList<String> > > space = new ArrayList<>(x_axis_length);
+
+        //Initializing each element of ArrayList with ArrayList< ArrayList<String> >
+        for(int i=0; i< x_axis_length; i++) {
+            space.add(new ArrayList< ArrayList<String> >(y_axis_length));
+            for(int j =0; j< y_axis_length; j++) {
+                space.get(i).add(new ArrayList<String>(z_axis_length));
+            }
+        }
+
+        //Set Red color for points (0,0,0) and (0,0,1)
+        space.get(0).get(0).add("Red");
+        space.get(0).get(0).add("Red");
+        //Set Blue color for points (0,1,0) and (0,1,1)
+        space.get(0).get(1).add("Blue");
+        space.get(0).get(1).add("Blue");
+        //Set Green color for points (1,0,0) and (1,0,1)
+        space.get(1).get(0).add("Green");
+        space.get(1).get(0).add("Green");
+        //Set Yellow color for points (1,1,0) and (1,1,1)
+        space.get(1).get(1).add("Yellow");
+        space.get(1).get(1).add("Yellow");
+
+        //Printing colors for all the points
+        for(int i=0; i<x_axis_length; i++) {
+            for(int j=0; j<y_axis_length; j++) {
+                for(int k=0; k<z_axis_length; k++) {
+                    System.out.println("Color of point ("+i+","+j+","+k+") is :"+space.get(i).get(j).get(k));
+                }
+            }
+        }
+    }
+
+}
@@ -26,7 +26,6 @@
 - [ExecutorService - Waiting for Threads to Finish](http://www.baeldung.com/java-executor-wait-for-threads)
 - [wait and notify() Methods in Java](http://www.baeldung.com/java-wait-notify)
 - [Priority-based Job Scheduling in Java](http://www.baeldung.com/java-priority-job-schedule)
- [A Custom Spring SecurityConfigurer](http://www.baeldung.com/spring-security-custom-configurer)
 - [Life Cycle of a Thread in Java](http://www.baeldung.com/java-thread-lifecycle)
 - [Runnable vs. Callable in Java](http://www.baeldung.com/java-runnable-callable)
 - [Brief Introduction to Java Thread.yield()](https://www.baeldung.com/java-thread-yield)
@@ -45,6 +45,7 @@ public class FileDownload {
            FileOutputStream fileOutputStream = new FileOutputStream(localFilename); FileChannel fileChannel = fileOutputStream.getChannel()) {

            fileChannel.transferFrom(readableByteChannel, 0, Long.MAX_VALUE);
+            fileOutputStream.close();
        }
    }

@@ -0,0 +1,22 @@
+package com.baeldung.packages;
+
+import java.time.LocalDate;
+
+import com.baeldung.packages.domain.TodoItem;
+
+public class TodoApp {
+
+    public static void main(String[] args) {
+        TodoList todoList = new TodoList();
+        for (int i = 0; i < 3; i++) {
+            TodoItem item = new TodoItem();
+            item.setId(Long.valueOf((long)i));
+            item.setDescription("Todo item " + (i + 1));
+            item.setDueDate(LocalDate.now().plusDays((long)(i + 1)));
+            todoList.addTodoItem(item);
+        }
+
+        todoList.getTodoItems().forEach((TodoItem todoItem) -> System.out.println(todoItem.toString()));
+    }
+
+}
@@ -0,0 +1,27 @@
+package com.baeldung.packages;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import com.baeldung.packages.domain.TodoItem;
+
+public class TodoList {
+    private List<TodoItem> todoItems;
+
+    public void addTodoItem(TodoItem todoItem) {
+        if (todoItems == null) {
+            todoItems = new ArrayList<TodoItem>();
+        }
+
+        todoItems.add(todoItem);
+    }
+
+    public List<TodoItem> getTodoItems() {
+        return todoItems;
+    }
+
+    public void setTodoItems(List<TodoItem> todoItems) {
+        this.todoItems = todoItems;
+    }
+
+}
@@ -0,0 +1,39 @@
+package com.baeldung.packages.domain;
+
+import java.time.LocalDate;
+
+public class TodoItem {
+    private Long id;
+    private String description;
+    private LocalDate dueDate;
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public String getDescription() {
+        return description;
+    }
+
+    public void setDescription(String description) {
+        this.description = description;
+    }
+
+    public LocalDate getDueDate() {
+        return dueDate;
+    }
+
+    public void setDueDate(LocalDate dueDate) {
+        this.dueDate = dueDate;
+    }
+
+    @Override
+    public String toString() {
+        return "TodoItem [id=" + id + ", description=" + description + ", dueDate=" + dueDate + "]";
+    }
+
+}
@@ -0,0 +1,23 @@
+package com.baeldung.packages;
+
+import static org.junit.Assert.assertEquals;
+
+import java.time.LocalDate;
+
+import org.junit.Test;
+
+import com.baeldung.packages.domain.TodoItem;
+
+public class PackagesUnitTest {
+
+    @Test
+    public void whenTodoItemAdded_ThenSizeIncreases() {
+        TodoItem todoItem = new TodoItem();
+        todoItem.setId(1L);
+        todoItem.setDescription("Test the Todo List");
+        todoItem.setDueDate(LocalDate.now());
+        TodoList todoList = new TodoList();
+        todoList.addTodoItem(todoItem);
+        assertEquals(1, todoList.getTodoItems().size());
+    }
+}
@@ -1,3 +1,7 @@
 =========

-## Core Java Net
+## Core Java Networking
+
+### Relevant Articles
+
+- [Connecting Through Proxy Servers in Core Java](https://www.baeldung.com/java-connect-via-proxy-server)
@@ -0,0 +1,11 @@
+package com.baeldung.basicsyntax;
+
+public class SimpleAddition {
+
+    public static void main(String[] args) {
+        int a = 10;
+        int b = 5;
+        double c = a + b;
+        System.out.println( a + " + " + b + " = " + c);
+    }
+}
@@ -72,6 +72,17 @@
            <artifactId>injekt-core</artifactId>
            <version>1.16.1</version>
        </dependency>
+        <dependency>
+            <groupId>uy.kohesive.kovert</groupId>
+            <artifactId>kovert-vertx</artifactId>
+            <version>[1.5.0,1.6.0)</version>
+            <exclusions>
+                <exclusion>
+                    <groupId>nl.komponents.kovenant</groupId>
+                    <artifactId>kovenant</artifactId>
+                </exclusion>
+            </exclusions>
+        </dependency>
    </dependencies>

    <properties>
@@ -0,0 +1,14 @@
+package com.baeldung.inline.classes
+
+interface Drawable {
+    fun draw()
+}
+
+inline class CircleRadius(private val circleRadius : Double) : Drawable {
+    val diameterOfCircle get() = 2 * circleRadius
+    fun areaOfCircle() = 3.14 * circleRadius * circleRadius
+
+    override fun draw() {
+        println("Draw my circle")
+    }
+}
@@ -0,0 +1,3 @@
+package com.baeldung.inline.classes
+
+inline class InlineDoubleWrapper(val doubleValue : Double)
@@ -0,0 +1,73 @@
+package com.baeldung.kovert
+
+import io.vertx.ext.web.Router
+import io.vertx.ext.web.RoutingContext
+import nl.komponents.kovenant.functional.bind
+import org.kodein.di.Kodein
+import org.kodein.di.conf.global
+import org.slf4j.Logger
+import org.slf4j.LoggerFactory
+import uy.klutter.config.typesafe.ClassResourceConfig
+import uy.klutter.config.typesafe.ReferenceConfig
+import uy.klutter.config.typesafe.kodein.importConfig
+import uy.klutter.config.typesafe.loadConfig
+import uy.klutter.vertx.kodein.KodeinVertx
+import uy.kohesive.kovert.core.HttpVerb
+import uy.kohesive.kovert.core.Location
+import uy.kohesive.kovert.core.Verb
+import uy.kohesive.kovert.core.VerbAlias
+import uy.kohesive.kovert.vertx.bindController
+import uy.kohesive.kovert.vertx.boot.KodeinKovertVertx
+import uy.kohesive.kovert.vertx.boot.KovertVerticle
+import uy.kohesive.kovert.vertx.boot.KovertVerticleModule
+import uy.kohesive.kovert.vertx.boot.KovertVertx
+
+
+class AnnotatedServer {
+    companion object {
+        private val LOG: Logger = LoggerFactory.getLogger(AnnotatedServer::class.java)
+
+        @JvmStatic
+        fun main(args: Array<String>) {
+            AnnotatedServer().start()
+        }
+    }
+
+    @VerbAlias("show", HttpVerb.GET)
+    class AnnotatedController {
+        fun RoutingContext.showStringById(id: String) = id
+
+        @Verb(HttpVerb.GET)
+        @Location("/ping/:id")
+        fun RoutingContext.ping(id: String) = id
+    }
+
+    fun start() {
+        Kodein.global.addImport(Kodein.Module {
+            importConfig(loadConfig(ClassResourceConfig("/kovert.conf", AnnotatedServer::class.java), ReferenceConfig())) {
+                import("kovert.vertx", KodeinKovertVertx.configModule)
+                import("kovert.server", KovertVerticleModule.configModule)
+            }
+
+            // includes jackson ObjectMapper to match compatibility with Vertx, app logging via Vertx facade to Slf4j
+            import(KodeinVertx.moduleWithLoggingToSlf4j)
+            // Kovert boot
+            import(KodeinKovertVertx.module)
+            import(KovertVerticleModule.module)
+        })
+
+        val initControllers = fun Router.() {
+            bindController(AnnotatedController(), "api")
+        }
+
+        // startup asynchronously...
+        KovertVertx.start() bind { vertx ->
+            KovertVerticle.deploy(vertx, routerInit = initControllers)
+        } success { deploymentId ->
+            LOG.warn("Deployment complete.")
+        } fail { error ->
+            LOG.error("Deployment failed!", error)
+        }
+
+    }
+}
--- a/Show More
+++ b/Show More