Thinking outside the box

0001-01-01 1 min read

By applying a filter predicate we can adapt a collector to accept only elements matching a predicate.

Filtering

Unresolved directive in <stdin> - include::../../../../../../../../src/main/java/nine/api/CollectorsApi.java[tag=filtering]

With the new flatMapping method a stream of streams or stream of collections a collector is adapted to return a flattened result.

0001-01-01 1 min read

Factory methods have been added to the Collections class for simplifying list creation.

Empty list with {java8}

Unresolved directive in <stdin> - include::../../../../../../../../src/main/java/nine/api/ImmutableListFactory.java[tag=immutableEmptyList]

Empty list with {java9}

Unresolved directive in <stdin> - include::../../../../../../../../src/main/java/nine/api/ImmutableListFactory.java[tag=immutableEmptyListJava9]

List with {java8}

Unresolved directive in <stdin> - include::../../../../../../../../src/main/java/nine/api/ImmutableListFactory.java[tag=immutableListJava8]

List with {java9}

0001-01-01 1 min read

Factory methods have been added to the Collections class for simplifying map entry creation.

Immutable Empty Map

Unresolved directive in <stdin> - include::../../../../../../../../src/main/java/nine/api/ImmutableMapEntryFactory.java[tag=immutableEmptyMap]

Immutable Map

Unresolved directive in <stdin> - include::../../../../../../../../src/main/java/nine/api/ImmutableMapEntryFactory.java[tag=immutableMap]

0001-01-01 1 min read

Factory methods have been added to the Collections class for simplifying map creation.

Empty map with {java8}

Unresolved directive in <stdin> - include::../../../../../../../../src/main/java/nine/api/ImmutableMapFactory.java[tag=immutableEmptyMapJava8]

Empty map with {java9}

Unresolved directive in <stdin> - include::../../../../../../../../src/main/java/nine/api/ImmutableMapFactory.java[tag=immutableEmptyMapJava9]

Map with {java8}

Unresolved directive in <stdin> - include::../../../../../../../../src/main/java/nine/api/ImmutableMapFactory.java[tag=immutableMapJava8]

Map with {java9}

0001-01-01 1 min read

Factory methods have been added to the Collections class for simplifying set creation.

Empty Set with {java8}

Unresolved directive in <stdin> - include::../../../../../../../../src/main/java/nine/api/ImmutableSetFactory.java[tag=immutableEmptySetJava8]

Empty Set with {java9}

Unresolved directive in <stdin> - include::../../../../../../../../src/main/java/nine/api/ImmutableSetFactory.java[tag=immutableEmptySetJava9]

Set with {java8}

Unresolved directive in <stdin> - include::../../../../../../../../src/main/java/nine/api/ImmutableSetFactory.java[tag=immutableSetJava8]

Set with {java9}

0001-01-01 1 min read

With Matcher.results we get a stream of all matched elements

Results

Unresolved directive in <stdin> - include::../../../../../../../../src/main/java/nine/api/MatcherApi.java[tag=results]

With Matcher.replaceAll we can perform substitution of matches.

Replace All

Unresolved directive in <stdin> - include::../../../../../../../../src/main/java/nine/api/MatcherApi.java[tag=replaceAll]

0001-01-01 1 min read

Methods for convenient null checking have been added to Objects class.

Require Non Null Else

Unresolved directive in <stdin> - include::../../../../../../../../src/main/java/nine/api/ObjectsApi.java[tag=requireNonNullElse]

Require Non Null Else Get

Unresolved directive in <stdin> - include::../../../../../../../../src/main/java/nine/api/ObjectsApi.java[tag=requireNonNullElseGet]