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Revert "BAEL-4134"

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This commit is contained in:
Loredana Crusoveanu
2020-07-07 14:18:10 +03:00
committed by GitHub
parent dffa1f64e6
commit 485b4e3e99
2477 changed files with 9477 additions and 547819 deletions
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2
core-java-modules/core-java-lang-2/README.md
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@@ -11,4 +11,6 @@ This module contains articles about core features in the Java language
- [Guide to the Java finally Keyword](https://www.baeldung.com/java-finally-keyword)
- [The Java Headless Mode](https://www.baeldung.com/java-headless-mode)
- [Comparing Long Values in Java](https://www.baeldung.com/java-compare-long-values)
- [Comparing Objects in Java](https://www.baeldung.com/java-comparing-objects)
- [Casting int to Enum in Java](https://www.baeldung.com/java-cast-int-to-enum)
- [[<-- Prev]](/core-java-modules/core-java-lang)

6
core-java-modules/core-java-lang-2/src/main/java/com/baeldung/comparing/PersonWithEquals.java
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@@ -22,15 +22,15 @@ public class PersonWithEquals {
this.birthDate = birthDate;
}
public String firstName() {
public String getFirstName() {
return firstName;
}
public String lastName() {
public String getLastName() {
return lastName;
}
public LocalDate birthDate() {
public LocalDate getBirthDate() {
return birthDate;
}

12
core-java-modules/core-java-lang-2/src/main/java/com/baeldung/comparing/PersonWithEqualsAndComparable.java
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@@ -22,6 +22,18 @@ public class PersonWithEqualsAndComparable implements Comparable<PersonWithEqual
this.birthDate = birthDate;
}
public String getFirstName() {
return firstName;
}
public String getLastName() {
return lastName;
}
public LocalDate getBirthDate() {
return birthDate;
}
@Override
public boolean equals(Object o) {
if (this == o) return true;

12
core-java-modules/core-java-lang-2/src/main/java/com/baeldung/comparing/PersonWithEqualsAndComparableUsingComparator.java
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@@ -23,15 +23,15 @@ public class PersonWithEqualsAndComparableUsingComparator implements Comparable<
this.birthDate = birthDate;
}
public String firstName() {
public String getFirstName() {
return firstName;
}
public String lastName() {
public String getLastName() {
return lastName;
}
public LocalDate birthDate() {
public LocalDate getBirthDate() {
return birthDate;
}
@@ -52,9 +52,9 @@ public class PersonWithEqualsAndComparableUsingComparator implements Comparable<
@Override
public int compareTo(PersonWithEqualsAndComparableUsingComparator o) {
return Comparator.comparing(PersonWithEqualsAndComparableUsingComparator::lastName)
.thenComparing(PersonWithEqualsAndComparableUsingComparator::firstName)
.thenComparing(PersonWithEqualsAndComparableUsingComparator::birthDate, Comparator.nullsLast(Comparator.naturalOrder()))
return Comparator.comparing(PersonWithEqualsAndComparableUsingComparator::getLastName)
.thenComparing(PersonWithEqualsAndComparableUsingComparator::getFirstName)
.thenComparing(PersonWithEqualsAndComparableUsingComparator::getBirthDate, Comparator.nullsLast(Comparator.naturalOrder()))
.compare(this, o);
}
}

12
core-java-modules/core-java-lang-2/src/main/java/com/baeldung/comparing/PersonWithEqualsAndWrongComparable.java
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@@ -22,6 +22,18 @@ public class PersonWithEqualsAndWrongComparable implements Comparable<PersonWith
this.birthDate = birthDate;
}
public String getFirstName() {
return firstName;
}
public String getLastName() {
return lastName;
}
public LocalDate getBirthDate() {
return birthDate;
}
@Override
public boolean equals(Object o) {
if (this == o) return true;

8
core-java-modules/core-java-lang-2/src/main/java/com/baeldung/comparing/PersonWithoutEquals.java
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@@ -8,4 +8,12 @@ public class PersonWithoutEquals {
this.firstName = firstName;
this.lastName = lastName;
}
public String getFirstName() {
return firstName;
}
public String getLastName() {
return lastName;
}
}

7
core-java-modules/core-java-lang-2/src/main/java/com/baeldung/inttoenum/PizzaStatus.java
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@@ -21,11 +21,10 @@ public enum PizzaStatus {
private static Map<Integer, PizzaStatus> timeToDeliveryToEnumValuesMapping = new HashMap<>();
static {
PizzaStatus[] pizzaStatuses = PizzaStatus.values();
for (int pizzaStatusIndex = 0; pizzaStatusIndex < pizzaStatuses.length; pizzaStatusIndex++) {
for (PizzaStatus pizzaStatus : PizzaStatus.values()) {
timeToDeliveryToEnumValuesMapping.put(
pizzaStatuses[pizzaStatusIndex].getTimeToDelivery(),
pizzaStatuses[pizzaStatusIndex]
pizzaStatus.getTimeToDelivery(),
pizzaStatus
);
}
}

5
core-java-modules/core-java-lang-2/src/main/java/com/baeldung/isinstancevsisassignablefrom/IsoscelesTriangle.java Normal file
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@@ -0,0 +1,5 @@
package com.baeldung.isinstancevsisassignablefrom;
public class IsoscelesTriangle extends Triangle {
}

5
core-java-modules/core-java-lang-2/src/main/java/com/baeldung/isinstancevsisassignablefrom/Shape.java Normal file
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@@ -0,0 +1,5 @@
package com.baeldung.isinstancevsisassignablefrom;
public interface Shape {
}

5
core-java-modules/core-java-lang-2/src/main/java/com/baeldung/isinstancevsisassignablefrom/Triangle.java Normal file
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@@ -0,0 +1,5 @@
package com.baeldung.isinstancevsisassignablefrom;
public class Triangle implements Shape {
}

4
core-java-modules/core-java-lang-2/src/test/java/com/baeldung/comparing/ComparatorInterfaceUnitTest.java
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@@ -20,7 +20,7 @@ class ComparatorInterfaceUnitTest {
Comparator<PersonWithEquals> compareByFirstNames = new Comparator<PersonWithEquals>() {
@Override
public int compare(PersonWithEquals o1, PersonWithEquals o2) {
return o1.firstName().compareTo(o2.firstName());
return o1.getFirstName().compareTo(o2.getFirstName());
}
};
people.sort(compareByFirstNames);
@@ -37,7 +37,7 @@ class ComparatorInterfaceUnitTest {
people.add(joe);
people.add(allan);
Comparator<PersonWithEquals> compareByFirstNames = Comparator.comparing(PersonWithEquals::firstName);
Comparator<PersonWithEquals> compareByFirstNames = Comparator.comparing(PersonWithEquals::getFirstName);
people.sort(compareByFirstNames);
assertThat(people).containsExactly(allan, joe);

4
core-java-modules/core-java-lang-2/src/test/java/com/baeldung/comparing/GuavaUnitTest.java
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@@ -63,8 +63,8 @@ class GuavaUnitTest {
PersonWithEquals joe = new PersonWithEquals("Joe", "Portman");
int comparisonResult = ComparisonChain.start()
.compare(natalie.lastName(), joe.lastName())
.compare(natalie.firstName(), joe.firstName())
.compare(natalie.getLastName(), joe.getLastName())
.compare(natalie.getFirstName(), joe.getFirstName())
.result();
assertThat(comparisonResult).isPositive();

31
core-java-modules/core-java-lang-2/src/test/java/com/baeldung/inttoenum/IntToEnumUnitTest.java
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@@ -1,7 +1,12 @@
package com.baeldung.inttoenum;
import org.assertj.core.api.Assertions;
import org.junit.Test;
import java.util.Arrays;
import java.util.Optional;
import static org.assertj.core.api.Assertions.assertThat;
import static org.junit.Assert.assertEquals;
public class IntToEnumUnitTest {
@@ -9,19 +14,33 @@ public class IntToEnumUnitTest {
@Test
public void whenIntToEnumUsingValuesMethod_thenReturnEnumObject() {
int timeToDeliveryForOrderedPizzaStatus = 5;
PizzaStatus[] pizzaStatuses = PizzaStatus.values();
PizzaStatus pizzaOrderedStatus = null;
for (int pizzaStatusIndex = 0; pizzaStatusIndex < pizzaStatuses.length; pizzaStatusIndex++) {
if (pizzaStatuses[pizzaStatusIndex].getTimeToDelivery() == timeToDeliveryForOrderedPizzaStatus) {
pizzaOrderedStatus = pizzaStatuses[pizzaStatusIndex];
for (PizzaStatus pizzaStatus : PizzaStatus.values()) {
if (pizzaStatus.getTimeToDelivery() == timeToDeliveryForOrderedPizzaStatus) {
pizzaOrderedStatus = pizzaStatus;
}
}
assertEquals(pizzaOrderedStatus, PizzaStatus.ORDERED);
assertThat(pizzaOrderedStatus).isEqualTo(PizzaStatus.ORDERED);
}
@Test
public void whenIntToEnumUsingMap_thenReturnEnumObject() {
int timeToDeliveryForOrderedPizzaStatus = 5;
assertEquals(PizzaStatus.castIntToEnum(timeToDeliveryForOrderedPizzaStatus), PizzaStatus.ORDERED);
assertThat(PizzaStatus.castIntToEnum(timeToDeliveryForOrderedPizzaStatus)).isEqualTo(PizzaStatus.ORDERED);
}
@Test
public void whenIntToEnumUsingStream_thenReturnEnumObject() {
int timeToDeliveryForOrderedPizzaStatus = 5;
Optional<PizzaStatus> pizzaStatus = Arrays.stream(PizzaStatus.values())
.filter(p -> p.getTimeToDelivery() == timeToDeliveryForOrderedPizzaStatus)
.findFirst();
assertThat(pizzaStatus).hasValue(PizzaStatus.ORDERED);
}
}

67
core-java-modules/core-java-lang-2/src/test/java/com/baeldung/isinstancevsisassignablefrom/IsInstanceIsAssignableFromUnitTest.java Normal file
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@@ -0,0 +1,67 @@
package com.baeldung.isinstancevsisassignablefrom;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;
import org.junit.Test;
public class IsInstanceIsAssignableFromUnitTest {
@Test
public void whenUsingIsInstanceProperly_desiredResultsHappen() {
Shape shape = new Triangle();
Triangle triangle = new Triangle();
IsoscelesTriangle isoscelesTriangle = new IsoscelesTriangle();
Triangle isoscelesTriangle2 = new IsoscelesTriangle();
Shape nonspecificShape = null;
assertTrue(Shape.class.isInstance(shape));
assertTrue(Shape.class.isInstance(triangle));
assertTrue(Shape.class.isInstance(isoscelesTriangle));
assertTrue(Shape.class.isInstance(isoscelesTriangle2));
assertFalse(Shape.class.isInstance(nonspecificShape));
assertTrue(Triangle.class.isInstance(shape));
assertTrue(Triangle.class.isInstance(triangle));
assertTrue(Triangle.class.isInstance(isoscelesTriangle));
assertTrue(Triangle.class.isInstance(isoscelesTriangle2));
assertFalse(IsoscelesTriangle.class.isInstance(shape));
assertFalse(IsoscelesTriangle.class.isInstance(triangle));
assertTrue(IsoscelesTriangle.class.isInstance(isoscelesTriangle));
assertTrue(IsoscelesTriangle.class.isInstance(isoscelesTriangle2));
}
@Test
public void whenUsingIsAssignableFromProperly_desiredResultsHappen() {
Shape shape = new Triangle();
Triangle triangle = new Triangle();
IsoscelesTriangle isoscelesTriangle = new IsoscelesTriangle();
Triangle isoscelesTriangle2 = new IsoscelesTriangle();
assertFalse(shape.getClass().isAssignableFrom(Shape.class));
assertTrue(shape.getClass().isAssignableFrom(shape.getClass()));
assertTrue(shape.getClass().isAssignableFrom(triangle.getClass()));
assertTrue(shape.getClass().isAssignableFrom(isoscelesTriangle.getClass()));
assertTrue(shape.getClass().isAssignableFrom(isoscelesTriangle2.getClass()));
assertFalse(triangle.getClass().isAssignableFrom(Shape.class));
assertTrue(triangle.getClass().isAssignableFrom(shape.getClass()));
assertTrue(triangle.getClass().isAssignableFrom(triangle.getClass()));
assertTrue(triangle.getClass().isAssignableFrom(isoscelesTriangle.getClass()));
assertTrue(triangle.getClass().isAssignableFrom(isoscelesTriangle2.getClass()));
assertFalse(isoscelesTriangle.getClass().isAssignableFrom(Shape.class));
assertFalse(isoscelesTriangle.getClass().isAssignableFrom(shape.getClass()));
assertFalse(isoscelesTriangle.getClass().isAssignableFrom(triangle.getClass()));
assertTrue(isoscelesTriangle.getClass().isAssignableFrom(isoscelesTriangle.getClass()));
assertTrue(isoscelesTriangle.getClass().isAssignableFrom(isoscelesTriangle2.getClass()));
assertFalse(isoscelesTriangle2.getClass().isAssignableFrom(Shape.class));
assertFalse(isoscelesTriangle2.getClass().isAssignableFrom(shape.getClass()));
assertFalse(isoscelesTriangle2.getClass().isAssignableFrom(triangle.getClass()));
assertTrue(isoscelesTriangle2.getClass().isAssignableFrom(isoscelesTriangle.getClass()));
assertTrue(isoscelesTriangle2.getClass().isAssignableFrom(isoscelesTriangle2.getClass()));
}
}