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[BAEL-6810] - Sequenced Collections in Java 21

This commit is contained in:
ovidiu-mihai98 2023-08-30 19:58:17 +03:00
parent 05ca686833
commit 21176bb975
5 changed files with 75 additions and 0 deletions
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1
core-java-modules/core-java-21/README.md Normal file
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## Relevant Articles

34
core-java-modules/core-java-21/pom.xml Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<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-21</artifactId>
<name>core-java-21</name>
<parent>
<groupId>com.baeldung.core-java-modules</groupId>
<artifactId>core-java-modules</artifactId>
<version>0.0.1-SNAPSHOT</version>
</parent>
<!-- <build>-->
<!-- <plugins>-->
<!-- <plugin>-->
<!-- <groupId>org.apache.maven.plugins</groupId>-->
<!-- <artifactId>maven-compiler-plugin</artifactId>-->
<!-- <configuration>-->
<!-- <source>{maven.compiler.source.version}</source>-->
<!-- <target>{maven.compiler.target.version}</target>-->
<!-- </configuration>-->
<!-- </plugin>-->
<!-- </plugins>-->
<!-- </build>-->
<!-- <properties>-->
<!-- <maven.compiler.source.version>21</maven.compiler.source.version>-->
<!-- <maven.compiler.target.version>21</maven.compiler.target.version>-->
<!-- <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>-->
<!-- </properties>-->
</project>

15
core-java-modules/core-java-21/src/main/java/com/baeldung/sequenced/collections/SequencedCollection.java Normal file
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package com.baeldung.sequenced.collections;
/*
interface SequencedCollection<E> extends Collection<E> {
// new method
SequencedCollection<E> reversed();
// methods promoted from Deque
void addFirst(E);
void addLast(E);
E getFirst();
E getLast();
E removeFirst();
E removeLast();
}
*/

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core-java-modules/core-java-21/src/main/java/com/baeldung/sequenced/collections/SequencedMap.java Normal file
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package com.baeldung.sequenced.collections;
/*
interface SequencedMap<K,V> extends Map<K,V> {
// new methods
SequencedMap<K,V> reversed();
SequencedSet<K> sequencedKeySet();
SequencedCollection<V> sequencedValues();
SequencedSet<Entry<K,V>> sequencedEntrySet();
V putFirst(K, V);
V putLast(K, V);
// methods promoted from NavigableMap
Entry<K, V> firstEntry();
Entry<K, V> lastEntry();
Entry<K, V> pollFirstEntry();
Entry<K, V> pollLastEntry();
}
*/

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core-java-modules/core-java-21/src/main/java/com/baeldung/sequenced/collections/SequencedSet.java Normal file
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package com.baeldung.sequenced.collections;
/*
interface SequencedSet<E> extends Set<E>, SequencedCollection<E> {
SequencedSet<E> reversed(); // covariant override
}
*/