move java8 code (#2535)

* fix spring config * fix spring config * fix spring config * minor fix * fix spring-boot module * fix pom * upgrade jackson * minor fix * java concurrency * cleanup * fix conflict * java 8 * clean up * add core-java-8 to main pom
2017-08-31 09:43:28 +02:00
parent 2aeef70d39
commit 9c03b45c23
94 changed files with 358 additions and 34 deletions
@@ -22,19 +22,11 @@
 - [Guide to the Java ArrayList](http://www.baeldung.com/java-arraylist)
 - [Guide to Java Reflection](http://www.baeldung.com/java-reflection)
 - [A Guide to Java Sockets](http://www.baeldung.com/a-guide-to-java-sockets)
- [Java 8 Collectors](http://www.baeldung.com/java-8-collectors)
- [Guide to Java 8’s Functional Interfaces](http://www.baeldung.com/java-8-functional-interfaces)
 - [Convert char to String in Java](http://www.baeldung.com/java-convert-char-to-string)
 - [Random List Element](http://www.baeldung.com/java-random-list-element)
 - [Convert String to int or Integer in Java](http://www.baeldung.com/java-convert-string-to-int-or-integer)
- [Java 8 – Powerful Comparison with Lambdas](http://www.baeldung.com/java-8-sort-lambda)
 - [Java – Directory Size](http://www.baeldung.com/java-folder-size)
 - [Java – Try with Resources](http://www.baeldung.com/java-try-with-resources)
- [Java 8 New Features](http://www.baeldung.com/java-8-new-features)
- [Lambda Expressions and Functional Interfaces: Tips and Best Practices](http://www.baeldung.com/java-8-lambda-expressions-tips)
- [The Double Colon Operator in Java 8](http://www.baeldung.com/java-8-double-colon-operator)
- [Java 8 Streams Advanced](http://www.baeldung.com/java-8-streams)
- [Introduction to Java 8 Streams](http://www.baeldung.com/java-8-streams-introduction)
 - [Guide to the Fork/Join Framework in Java](http://www.baeldung.com/java-fork-join)
 - [How to Print Screen in Java](http://www.baeldung.com/print-screen-in-java)
 - [How to Convert String to different data types in Java](http://www.baeldung.com/java-string-conversions)
@@ -55,30 +47,20 @@
 - [The Traveling Salesman Problem in Java](http://www.baeldung.com/java-simulated-annealing-for-traveling-salesman)
 - [How to Create an Executable JAR with Maven](http://www.baeldung.com/executable-jar-with-maven)
 - [How to Design a Genetic Algorithm in Java](http://www.baeldung.com/java-genetic-algorithm)
- [Guide to Java 8 groupingBy Collector](http://www.baeldung.com/java-groupingby-collector)
 - [Guide to WeakHashMap in Java](http://www.baeldung.com/java-weakhashmap)
- [Strategy Design Pattern in Java 8](http://www.baeldung.com/java-strategy-pattern)
- [Java 8 and Infinite Streams](http://www.baeldung.com/java-inifinite-streams)
- [String Operations with Java Streams](http://www.baeldung.com/java-stream-operations-on-strings)
 - [Spring Security – Cache Control Headers](http://www.baeldung.com/spring-security-cache-control-headers)
 - [Basic Introduction to JMX](http://www.baeldung.com/java-management-extensions)
 - [AWS Lambda With Java](http://www.baeldung.com/java-aws-lambda)
 - [Introduction to Nashorn](http://www.baeldung.com/java-nashorn)
- [Exceptions in Java 8 Lambda Expressions](http://www.baeldung.com/java-lambda-exceptions)
 - [Guide to the Guava BiMap](http://www.baeldung.com/guava-bimap)
 - [Iterable to Stream in Java](http://www.baeldung.com/java-iterable-to-stream)
- [Java 8 Stream findFirst() vs. findAny()](http://www.baeldung.com/java-stream-findfirst-vs-findany)
 - [Chained Exceptions in Java](http://www.baeldung.com/java-chained-exceptions)
 - [The Java HashMap Under the Hood](http://www.baeldung.com/java-hashmap)
 - [A Guide to LinkedHashMap in Java](http://www.baeldung.com/java-linked-hashmap)
 - [A Guide to TreeMap in Java](http://www.baeldung.com/java-treemap)
 - [A Quick JUnit vs TestNG Comparison](http://www.baeldung.com/junit-vs-testng)
- [Finding Max/Min of a List or Collection](http://www.baeldung.com/java-collection-min-max)
- [Guide to java.util.concurrent.Locks](http://www.baeldung.com/java-concurrent-locks)
 - [Java Primitive Conversions](http://www.baeldung.com/java-primitive-conversions)
 - [Java Money and the Currency API](http://www.baeldung.com/java-money-and-currency)
- [Guide to Java 8 Comparator.comparing()](http://www.baeldung.com/java-8-comparator-comparing)
- [Avoiding ConcurrentModificationException when iterating and removing](http://www.baeldung.com/avoiding-concurrentmodificationexception-when-iterating-and-removing)
 - [Removing all nulls from a List in Java](http://www.baeldung.com/java-remove-nulls-from-list)
 - [Removing all duplicates from a List in Java](http://www.baeldung.com/java-remove-duplicates-from-list)
 - [Using Math.pow in Java](http://www.baeldung.com/java-math-pow)
@@ -96,7 +78,6 @@
 - [Iterating Over Enum Values in Java](http://www.baeldung.com/java-enum-iteration)
 - [Kotlin Java Interoperability](http://www.baeldung.com/kotlin-java-interoperability)
 - [Using Java MappedByteBuffer](http://www.baeldung.com/java-mapped-byte-buffer)
- [The Difference Between map() and flatMap()](http://www.baeldung.com/java-difference-map-and-flatmap)
 - [How to Round a Number to N Decimal Places in Java](http://www.baeldung.com/java-round-decimal-number)
 - [Changing Annotation Parameters At Runtime](http://www.baeldung.com/java-reflection-change-annotation-params)
 - [How to Find all Getters Returning Null](http://www.baeldung.com/java-getters-returning-null)
@@ -117,8 +98,5 @@
 - [How to Remove the Last Character of a String?](http://www.baeldung.com/java-remove-last-character-of-string)
 - [ClassNotFoundException vs NoClassDefFoundError](http://www.baeldung.com/java-classnotfoundexception-and-noclassdeffounderror)
 - [Guide to UUID in Java](http://www.baeldung.com/java-uuid)
- [How to Get the Last Element of a Stream in Java?](http://www.baeldung.com/java-stream-last-element)
 - [Guide to Escaping Characters in Java RegExps](http://www.baeldung.com/java-regexp-escape-char)
 - [Period and Duration in Java](http://www.baeldung.com/java-period-duration)
- [Introduction to the Java 8 Date/Time API](http://www.baeldung.com/java-8-date-time-intro)
- [Migrating to the New Java 8 Date Time API](http://www.baeldung.com/migrating-to-java-8-date-time-api)
@@ -1,12 +0,0 @@
-package com.baeldung;
-
-import java.util.function.Consumer;
-import java.util.function.Function;
-
-public interface Adder {
-
-    String addWithFunction(Function<String, String> f);
-
-    void addWithConsumer(Consumer<Integer> f);
-
-}
@@ -1,17 +0,0 @@
-package com.baeldung;
-
-import java.util.function.Consumer;
-import java.util.function.Function;
-
-public class AdderImpl implements Adder {
-
-    @Override
-    public String addWithFunction(final Function<String, String> f) {
-        return f.apply("Something ");
-    }
-
-    @Override
-    public void addWithConsumer(final Consumer<Integer> f) {
-    }
-
-}
@@ -1,12 +0,0 @@
-package com.baeldung;
-
-@FunctionalInterface
-public interface Bar {
-
-    String method(String string);
-
-    default String defaultMethod() {
-        return "String from Bar";
-    }
-
-}
@@ -1,11 +0,0 @@
-package com.baeldung;
-
-@FunctionalInterface
-public interface Baz {
-
-    String method(String string);
-
-    default String defaultMethod() {
-        return "String from Baz";
-    }
-}
@@ -1,10 +0,0 @@
-package com.baeldung;
-
-@FunctionalInterface
-public interface Foo {
-
-    String method(String string);
-
-    default void defaultMethod() {
-    }
-}
@@ -1,11 +0,0 @@
-package com.baeldung;
-
-@FunctionalInterface
-public interface FooExtended extends Baz, Bar {
-
-    @Override
-    default String defaultMethod() {
-        return Bar.super.defaultMethod();
-    }
-
-}
@@ -1,37 +0,0 @@
-package com.baeldung;
-
-import java.util.function.Function;
-
-public class UseFoo {
-
-    private String value = "Enclosing scope value";
-
-    public String add(final String string, final Foo foo) {
-        return foo.method(string);
-    }
-
-    public String addWithStandardFI(final String string, final Function<String, String> fn) {
-        return fn.apply(string);
-    }
-
-    public String scopeExperiment() {
-        final Foo fooIC = new Foo() {
-            String value = "Inner class value";
-
-            @Override
-            public String method(final String string) {
-                return value;
-            }
-        };
-        final String resultIC = fooIC.method("");
-
-        final Foo fooLambda = parameter -> {
-            final String value = "Lambda value";
-            return this.value;
-        };
-        final String resultLambda = fooLambda.method("");
-
-        return "Results: resultIC = " + resultIC + ", resultLambda = " + resultLambda;
-    }
-
-}
@@ -1,2 +0,0 @@
-### Relevant Articles:
- [Introduction to the Java 8 Date/Time API](http://www.baeldung.com/java-8-date-time-intro)
@@ -1,16 +0,0 @@
-package com.baeldung.datetime;
-
-import java.time.Duration;
-import java.time.LocalTime;
-import java.time.Period;
-
-public class UseDuration {
-
-    public LocalTime modifyDates(LocalTime localTime, Duration duration) {
-        return localTime.plus(duration);
-    }
-
-    public Duration getDifferenceBetweenDates(LocalTime localTime1, LocalTime localTime2) {
-        return Duration.between(localTime1, localTime2);
-    }
-}
@@ -1,46 +0,0 @@
-package com.baeldung.datetime;
-
-import java.time.DayOfWeek;
-import java.time.LocalDate;
-import java.time.LocalDateTime;
-import java.time.temporal.ChronoUnit;
-import java.time.temporal.TemporalAdjusters;
-
-class UseLocalDate {
-
-    LocalDate getLocalDateUsingFactoryOfMethod(int year, int month, int dayOfMonth) {
-        return LocalDate.of(year, month, dayOfMonth);
-    }
-
-    LocalDate getLocalDateUsingParseMethod(String representation) {
-        return LocalDate.parse(representation);
-    }
-
-    LocalDate getLocalDateFromClock() {
-        LocalDate localDate = LocalDate.now();
-        return localDate;
-    }
-
-    LocalDate getNextDay(LocalDate localDate) {
-        return localDate.plusDays(1);
-    }
-
-    LocalDate getPreviousDay(LocalDate localDate) {
-        return localDate.minus(1, ChronoUnit.DAYS);
-    }
-
-    DayOfWeek getDayOfWeek(LocalDate localDate) {
-        DayOfWeek day = localDate.getDayOfWeek();
-        return day;
-    }
-
-    LocalDate getFirstDayOfMonth() {
-        LocalDate firstDayOfMonth = LocalDate.now().with(TemporalAdjusters.firstDayOfMonth());
-        return firstDayOfMonth;
-    }
-
-    LocalDateTime getStartOfDay(LocalDate localDate) {
-        LocalDateTime startofDay = localDate.atStartOfDay();
-        return startofDay;
-    }
-}
@@ -1,31 +0,0 @@
-package com.baeldung.datetime;
-
-import java.time.LocalTime;
-import java.time.temporal.ChronoUnit;
-
-public class UseLocalTime {
-
-    LocalTime getLocalTimeUsingFactoryOfMethod(int hour, int min, int seconds) {
-        return LocalTime.of(hour, min, seconds);
-    }
-
-    LocalTime getLocalTimeUsingParseMethod(String timeRepresentation) {
-        return LocalTime.parse(timeRepresentation);
-    }
-
-    private LocalTime getLocalTimeFromClock() {
-        return LocalTime.now();
-    }
-
-    LocalTime addAnHour(LocalTime localTime) {
-        return localTime.plus(1, ChronoUnit.HOURS);
-    }
-
-    int getHourFromLocalTime(LocalTime localTime) {
-        return localTime.getHour();
-    }
-
-    LocalTime getLocalTimeWithMinuteSetToValue(LocalTime localTime, int minute) {
-        return localTime.withMinute(minute);
-    }
-}
@@ -1,15 +0,0 @@
-package com.baeldung.datetime;
-
-import java.time.LocalDate;
-import java.time.Period;
-
-class UsePeriod {
-
-    LocalDate modifyDates(LocalDate localDate, Period period) {
-        return localDate.plus(period);
-    }
-
-    Period getDifferenceBetweenDates(LocalDate localDate1, LocalDate localDate2) {
-        return Period.between(localDate1, localDate2);
-    }
-}
@@ -1,17 +0,0 @@
-package com.baeldung.datetime;
-
-import java.time.LocalDateTime;
-import java.time.ZoneId;
-import java.util.Calendar;
-import java.util.Date;
-
-public class UseToInstant {
-
-    public LocalDateTime convertDateToLocalDate(Date date) {
-        return LocalDateTime.ofInstant(date.toInstant(), ZoneId.systemDefault());
-    }
-
-    public LocalDateTime convertDateToLocalDate(Calendar calendar) {
-        return LocalDateTime.ofInstant(calendar.toInstant(), ZoneId.systemDefault());
-    }
-}
@@ -1,12 +0,0 @@
-package com.baeldung.datetime;
-
-import java.time.LocalDateTime;
-import java.time.ZoneId;
-import java.time.ZonedDateTime;
-
-class UseZonedDateTime {
-
-    ZonedDateTime getZonedDateTime(LocalDateTime localDateTime, ZoneId zoneId) {
-        return ZonedDateTime.of(localDateTime, zoneId);
-    }
-}
@@ -1,85 +0,0 @@
-package com.baeldung.doublecolon;
-
-public class Computer {
-
-    private Integer age;
-    private String color;
-    private Integer healty;
-
-    Computer(final int age, final String color) {
-        this.age = age;
-        this.color = color;
-    }
-
-    Computer(final Integer age, final String color, final Integer healty) {
-        this.age = age;
-        this.color = color;
-        this.healty = healty;
-    }
-
-    public Computer() {
-    }
-
-    public Integer getAge() {
-        return age;
-    }
-
-    public void setAge(final Integer age) {
-        this.age = age;
-    }
-
-    String getColor() {
-        return color;
-    }
-
-    public void setColor(final String color) {
-        this.color = color;
-    }
-
-    Integer getHealty() {
-        return healty;
-    }
-
-    void setHealty(final Integer healty) {
-        this.healty = healty;
-    }
-
-    public void turnOnPc() {
-        System.out.println("Computer turned on");
-    }
-
-    public void turnOffPc() {
-        System.out.println("Computer turned off");
-    }
-
-    public Double calculateValue(Double initialValue) {
-        return initialValue / 1.50;
-    }
-
-    @Override
-    public String toString() {
-        return "Computer{" + "age=" + age + ", color='" + color + '\'' + ", healty=" + healty + '}';
-    }
-
-    @Override
-    public boolean equals(final Object o) {
-        if (this == o) {
-            return true;
-        }
-        if (o == null || getClass() != o.getClass()) {
-            return false;
-        }
-
-        final Computer computer = (Computer) o;
-
-        return (age != null ? age.equals(computer.age) : computer.age == null) && (color != null ? color.equals(computer.color) : computer.color == null);
-
-    }
-
-    @Override
-    public int hashCode() {
-        int result = age != null ? age.hashCode() : 0;
-        result = 31 * result + (color != null ? color.hashCode() : 0);
-        return result;
-    }
-}
@@ -1,27 +0,0 @@
-package com.baeldung.doublecolon;
-
-import com.baeldung.doublecolon.function.ComputerPredicate;
-
-import java.util.ArrayList;
-import java.util.List;
-
-public class ComputerUtils {
-
-    static final ComputerPredicate after2010Predicate = (c) -> (c.getAge() > 2010);
-    static final ComputerPredicate blackPredicate = (c) -> "black".equals(c.getColor());
-
-    public static List<Computer> filter(final List<Computer> inventory, final ComputerPredicate p) {
-
-        final List<Computer> result = new ArrayList<>();
-        inventory.stream().filter(p::filter).forEach(result::add);
-
-        return result;
-    }
-
-    static void repair(final Computer computer) {
-        if (computer.getHealty() < 50) {
-            computer.setHealty(100);
-        }
-    }
-
-}
@@ -1,39 +0,0 @@
-package com.baeldung.doublecolon;
-
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
-import java.util.function.Function;
-
-public class MacbookPro extends Computer {
-
-    private static final Logger LOG = LoggerFactory.getLogger(MacbookPro.class);
-
-    public MacbookPro(int age, String color) {
-        super(age, color);
-    }
-
-    MacbookPro(Integer age, String color, Integer healty) {
-        super(age, color, healty);
-    }
-
-    @Override
-    public void turnOnPc() {
-        LOG.debug("MacbookPro turned on");
-    }
-
-    @Override
-    public void turnOffPc() {
-        LOG.debug("MacbookPro turned off");
-    }
-
-    @Override
-    public Double calculateValue(Double initialValue) {
-
-        Function<Double, Double> function = super::calculateValue;
-        final Double pcValue = function.apply(initialValue);
-        LOG.debug("First value is:" + pcValue);
-        return pcValue + (initialValue / 10);
-
-    }
-}
@@ -1,10 +0,0 @@
-package com.baeldung.doublecolon.function;
-
-import com.baeldung.doublecolon.Computer;
-
-@FunctionalInterface
-public interface ComputerPredicate {
-
-    boolean filter(Computer c);
-
-}
@@ -1,15 +0,0 @@
-package com.baeldung.doublecolon.function;
-
-import java.util.Objects;
-import java.util.function.Function;
-
-@FunctionalInterface
-public interface TriFunction<A, B, C, R> {
-
-    R apply(A a, B b, C c);
-
-    default <V> TriFunction<A, B, C, V> andThen(final Function<? super R, ? extends V> after) {
-        Objects.requireNonNull(after);
-        return (final A a, final B b, final C c) -> after.apply(apply(a, b, c));
-    }
-}
@@ -1,57 +0,0 @@
-package com.baeldung.java8.lambda.exceptions;
-
-import java.util.function.Consumer;
-
-public class LambdaExceptionWrappers {
-
-    public static Consumer<Integer> lambdaWrapper(Consumer<Integer> consumer) {
-        return i -> {
-            try {
-                consumer.accept(i);
-            } catch (ArithmeticException e) {
-                System.err.println("Arithmetic Exception occured : " + e.getMessage());
-            }
-        };
-    }
-
-    static <T, E extends Exception> Consumer<T> consumerWrapper(Consumer<T> consumer, Class<E> clazz) {
-        return i -> {
-            try {
-                consumer.accept(i);
-            } catch (Exception ex) {
-                try {
-                    E exCast = clazz.cast(ex);
-                    System.err.println("Exception occured : " + exCast.getMessage());
-                } catch (ClassCastException ccEx) {
-                    throw ex;
-                }
-            }
-        };
-    }
-
-    public static <T> Consumer<T> throwingConsumerWrapper(ThrowingConsumer<T, Exception> throwingConsumer) {
-        return i -> {
-            try {
-                throwingConsumer.accept(i);
-            } catch (Exception ex) {
-                throw new RuntimeException(ex);
-            }
-        };
-    }
-
-    public static <T, E extends Exception> Consumer<T> handlingConsumerWrapper(ThrowingConsumer<T, E> throwingConsumer, Class<E> exceptionClass) {
-        return i -> {
-            try {
-                throwingConsumer.accept(i);
-            } catch (Exception ex) {
-                try {
-                    E exCast = exceptionClass.cast(ex);
-                    System.err.println("Exception occured : " + exCast.getMessage());
-                } catch (ClassCastException ccEx) {
-                    throw new RuntimeException(ex);
-                }
-            }
-        };
-    }
-
-}
@@ -1,8 +0,0 @@
-package com.baeldung.java8.lambda.exceptions;
-
-@FunctionalInterface
-public interface ThrowingConsumer<T, E extends Exception> {
-
-    void accept(T t) throws E;
-
-}
@@ -1,14 +0,0 @@
-package com.baeldung.java_8_features;
-
-public class Address {
-
-    private String street;
-
-    public String getStreet() {
-        return street;
-    }
-
-    public void setStreet(String street) {
-        this.street = street;
-    }
-}
@@ -1,4 +0,0 @@
-package com.baeldung.java_8_features;
-
-public class CustomException extends RuntimeException {
-}
@@ -1,13 +0,0 @@
-package com.baeldung.java_8_features;
-
-import java.util.Arrays;
-import java.util.List;
-
-public class Detail {
-
-    private static final List<String> PARTS = Arrays.asList("turbine", "pump");
-
-    public List<String> getParts() {
-        return PARTS;
-    }
-}
@@ -1,16 +0,0 @@
-package com.baeldung.java_8_features;
-
-import java.util.Optional;
-
-public class OptionalAddress {
-
-    private String street;
-
-    public Optional<String> getStreet() {
-        return Optional.ofNullable(street);
-    }
-
-    public void setStreet(String street) {
-        this.street = street;
-    }
-}
@@ -1,16 +0,0 @@
-package com.baeldung.java_8_features;
-
-import java.util.Optional;
-
-public class OptionalUser {
-
-    private OptionalAddress address;
-
-    public Optional<OptionalAddress> getAddress() {
-        return Optional.of(address);
-    }
-
-    public void setAddress(OptionalAddress address) {
-        this.address = address;
-    }
-}
@@ -1,27 +0,0 @@
-package com.baeldung.java_8_features;
-
-public class Person {
-    private String name;
-    private Integer age;
-
-    public Person(String name, int age) {
-        this.name = name;
-        this.age = age;
-    }
-
-    public String getName() {
-        return name;
-    }
-
-    public void setName(String name) {
-        this.name = name;
-    }
-
-    public Integer getAge() {
-        return age;
-    }
-
-    public void setAge(Integer age) {
-        this.age = age;
-    }
-}
@@ -1,40 +0,0 @@
-package com.baeldung.java_8_features;
-
-import java.util.Optional;
-
-public class User {
-
-    private String name;
-
-    private Address address;
-
-    public Address getAddress() {
-        return address;
-    }
-
-    public void setAddress(Address address) {
-        this.address = address;
-    }
-
-    public User() {
-    }
-
-    public User(String name) {
-        this.name = name;
-    }
-
-    public static boolean isRealUser(User user) {
-        return true;
-    }
-
-    public String getOrThrow() {
-        String value = null;
-        Optional<String> valueOpt = Optional.ofNullable(value);
-        String result = valueOpt.orElseThrow(CustomException::new).toUpperCase();
-        return result;
-    }
-
-    public boolean isLegalName(String name) {
-        return name.length() > 3 && name.length() < 16;
-    }
-}
@@ -1,18 +0,0 @@
-package com.baeldung.java_8_features;
-
-public interface Vehicle {
-
-    void moveTo(long altitude, long longitude);
-
-    static String producer() {
-        return "N&F Vehicles";
-    }
-
-    default long[] startPosition() {
-        return new long[] { 23, 15 };
-    }
-
-    default String getOverview() {
-        return "ATV made by " + producer();
-    }
-}
--- a/Show More
+++ b/Show More