From f600b79b10a9a52358019e9fef53c06e187a3425 Mon Sep 17 00:00:00 2001 From: programenth <139003443+programenth@users.noreply.github.com> Date: Tue, 17 Dec 2024 09:14:09 +0530 Subject: [PATCH 1/8] Adding filtering using regex code --- .../java-list-regex-filter/pom.xml | 39 ++++++++++++ .../java/com/baeldung/RegexFilterExample.java | 61 +++++++++++++++++++ .../baeldung/RegexFilterExampleUnitTest.java | 37 +++++++++++ 3 files changed, 137 insertions(+) create mode 100644 core-java-modules/java-list-regex-filter/pom.xml create mode 100644 core-java-modules/java-list-regex-filter/src/main/java/com/baeldung/RegexFilterExample.java create mode 100644 core-java-modules/java-list-regex-filter/src/test/java/com/baeldung/RegexFilterExampleUnitTest.java diff --git a/core-java-modules/java-list-regex-filter/pom.xml b/core-java-modules/java-list-regex-filter/pom.xml new file mode 100644 index 000000000000..25a6b2dd5d12 --- /dev/null +++ b/core-java-modules/java-list-regex-filter/pom.xml @@ -0,0 +1,39 @@ + + + 4.0.0 + + org.springframework.boot + spring-boot-starter-parent + 3.3.4 + + + + org.example + java-list-regex-filter + 1.0-SNAPSHOT + + + + central + Central Repository + https://repo1.maven.org/maven2/ + + + + + + org.junit.jupiter + junit-jupiter + test + + + + + 17 + 17 + UTF-8 + + + \ No newline at end of file diff --git a/core-java-modules/java-list-regex-filter/src/main/java/com/baeldung/RegexFilterExample.java b/core-java-modules/java-list-regex-filter/src/main/java/com/baeldung/RegexFilterExample.java new file mode 100644 index 000000000000..658b7a1058b8 --- /dev/null +++ b/core-java-modules/java-list-regex-filter/src/main/java/com/baeldung/RegexFilterExample.java @@ -0,0 +1,61 @@ +package com.baeldung; + +import java.util.ArrayList; +import java.util.List; +import java.util.Map; +import java.util.regex.Matcher; +import java.util.regex.Pattern; +import java.util.stream.Collectors; + +public class RegexFilterExample { + + public List method1() { + List fruits = List.of("apple", "banana", "cherry", "apricot", "avocado"); + + Pattern pattern = Pattern.compile("^a.*"); + + return fruits.stream() + .filter(pattern.asPredicate()) + .toList(); + } + + public List method2() { + List list = List.of("123", "abc", "456def", "789", "xyz"); + + return list.stream() + .filter(str -> str.matches("\\d+")) + .toList(); + } + + public List method3() { + List numbers = List.of("one", "two", "three", "four", "five"); + List startWithTList = new ArrayList<>(); + + Pattern pattern = Pattern.compile("^t.*"); + + for (String item : numbers) { + Matcher matcher = pattern.matcher(item); + if (matcher.matches()) + startWithTList.add(item); + } + + return startWithTList; + } + + public Map> method4() { + List fruits = List.of("apple", "banana", "apricot", "berry"); + + Pattern pattern = Pattern.compile("^a.*"); + + return fruits.stream() + .collect(Collectors.partitioningBy(pattern.asPredicate())); + } + + public static void main(String[] args) { + RegexFilterExample regexFilterExample = new RegexFilterExample(); + regexFilterExample.method1(); + regexFilterExample.method2(); + regexFilterExample.method3(); + regexFilterExample.method4(); + } +} diff --git a/core-java-modules/java-list-regex-filter/src/test/java/com/baeldung/RegexFilterExampleUnitTest.java b/core-java-modules/java-list-regex-filter/src/test/java/com/baeldung/RegexFilterExampleUnitTest.java new file mode 100644 index 000000000000..f4c5bcee9b53 --- /dev/null +++ b/core-java-modules/java-list-regex-filter/src/test/java/com/baeldung/RegexFilterExampleUnitTest.java @@ -0,0 +1,37 @@ +package com.baeldung; + +import java.util.List; +import java.util.Map; + +import org.junit.jupiter.api.Assertions; +import org.junit.jupiter.api.Test; + +class RegexFilterExampleUnitTest { + + RegexFilterExample regexFilterExample = new RegexFilterExample(); + + @Test + void whenMethod1Called_ThenReturnElementsStartingWithA() { + List newList = regexFilterExample.method1(); + Assertions.assertEquals(List.of("apple", "apricot", "avocado"), newList); + } + + @Test + void whenMethod2Called_ThenReturnElementsContainingDig() { + List newList = regexFilterExample.method2(); + Assertions.assertEquals(List.of("123", "789"), newList); + } + + @Test + void whenMethod1Called_ThenReturnElementsStartingWithT3() { + List newList = regexFilterExample.method3(); + Assertions.assertEquals(List.of("two", "three"), newList); + } + + @Test + void whenMethod1Called_ThenReturnElementsStartingWithA4() { + Map> newList = regexFilterExample.method4(); + Assertions.assertEquals(List.of("apple", "apricot"), newList.get(true)); + Assertions.assertEquals(List.of("banana", "berry"), newList.get(false)); + } +} From 1bb8c82aecb443f190393a75a0c4e504a2f2aa43 Mon Sep 17 00:00:00 2001 From: programenth <139003443+programenth@users.noreply.github.com> Date: Thu, 19 Dec 2024 14:06:41 +0000 Subject: [PATCH 2/8] moving files to different package --- .../java-list-regex-filter/pom.xml | 0 .../src/main/java/com/baeldung/RegexFilterExample.java | 4 ++-- .../java/com/baeldung/RegexFilterExampleUnitTest.java | 8 ++++---- 3 files changed, 6 insertions(+), 6 deletions(-) rename core-java-modules/{ => core-java-regex-3}/java-list-regex-filter/pom.xml (100%) rename core-java-modules/{ => core-java-regex-3}/java-list-regex-filter/src/main/java/com/baeldung/RegexFilterExample.java (96%) rename core-java-modules/{ => core-java-regex-3}/java-list-regex-filter/src/test/java/com/baeldung/RegexFilterExampleUnitTest.java (76%) diff --git a/core-java-modules/java-list-regex-filter/pom.xml b/core-java-modules/core-java-regex-3/java-list-regex-filter/pom.xml similarity index 100% rename from core-java-modules/java-list-regex-filter/pom.xml rename to core-java-modules/core-java-regex-3/java-list-regex-filter/pom.xml diff --git a/core-java-modules/java-list-regex-filter/src/main/java/com/baeldung/RegexFilterExample.java b/core-java-modules/core-java-regex-3/java-list-regex-filter/src/main/java/com/baeldung/RegexFilterExample.java similarity index 96% rename from core-java-modules/java-list-regex-filter/src/main/java/com/baeldung/RegexFilterExample.java rename to core-java-modules/core-java-regex-3/java-list-regex-filter/src/main/java/com/baeldung/RegexFilterExample.java index 658b7a1058b8..47221d84aa79 100644 --- a/core-java-modules/java-list-regex-filter/src/main/java/com/baeldung/RegexFilterExample.java +++ b/core-java-modules/core-java-regex-3/java-list-regex-filter/src/main/java/com/baeldung/RegexFilterExample.java @@ -15,8 +15,8 @@ public List method1() { Pattern pattern = Pattern.compile("^a.*"); return fruits.stream() - .filter(pattern.asPredicate()) - .toList(); + .filter(pattern.asPredicate()) + .toList(); } public List method2() { diff --git a/core-java-modules/java-list-regex-filter/src/test/java/com/baeldung/RegexFilterExampleUnitTest.java b/core-java-modules/core-java-regex-3/java-list-regex-filter/src/test/java/com/baeldung/RegexFilterExampleUnitTest.java similarity index 76% rename from core-java-modules/java-list-regex-filter/src/test/java/com/baeldung/RegexFilterExampleUnitTest.java rename to core-java-modules/core-java-regex-3/java-list-regex-filter/src/test/java/com/baeldung/RegexFilterExampleUnitTest.java index f4c5bcee9b53..aac458747869 100644 --- a/core-java-modules/java-list-regex-filter/src/test/java/com/baeldung/RegexFilterExampleUnitTest.java +++ b/core-java-modules/core-java-regex-3/java-list-regex-filter/src/test/java/com/baeldung/RegexFilterExampleUnitTest.java @@ -11,25 +11,25 @@ class RegexFilterExampleUnitTest { RegexFilterExample regexFilterExample = new RegexFilterExample(); @Test - void whenMethod1Called_ThenReturnElementsStartingWithA() { + void whenMethod1Called_thenReturnElementsStartingWithA() { List newList = regexFilterExample.method1(); Assertions.assertEquals(List.of("apple", "apricot", "avocado"), newList); } @Test - void whenMethod2Called_ThenReturnElementsContainingDig() { + void whenMethod2Called_thenReturnElementsContainingDig() { List newList = regexFilterExample.method2(); Assertions.assertEquals(List.of("123", "789"), newList); } @Test - void whenMethod1Called_ThenReturnElementsStartingWithT3() { + void whenMethod1Called_thenReturnElementsStartingWithT3() { List newList = regexFilterExample.method3(); Assertions.assertEquals(List.of("two", "three"), newList); } @Test - void whenMethod1Called_ThenReturnElementsStartingWithA4() { + void whenMethod1Called_thenReturnElementsStartingWithA4() { Map> newList = regexFilterExample.method4(); Assertions.assertEquals(List.of("apple", "apricot"), newList.get(true)); Assertions.assertEquals(List.of("banana", "berry"), newList.get(false)); From fa6cdbc1f46c5cbc584038275819c9ca8849748c Mon Sep 17 00:00:00 2001 From: programenth <139003443+programenth@users.noreply.github.com> Date: Sun, 22 Dec 2024 15:16:54 +0000 Subject: [PATCH 3/8] correcting indents --- .../java-list-regex-filter/pom.xml | 58 +++++++++---------- .../java/com/baeldung/RegexFilterExample.java | 6 +- 2 files changed, 32 insertions(+), 32 deletions(-) diff --git a/core-java-modules/core-java-regex-3/java-list-regex-filter/pom.xml b/core-java-modules/core-java-regex-3/java-list-regex-filter/pom.xml index 25a6b2dd5d12..fb56c3fedc8c 100644 --- a/core-java-modules/core-java-regex-3/java-list-regex-filter/pom.xml +++ b/core-java-modules/core-java-regex-3/java-list-regex-filter/pom.xml @@ -2,38 +2,38 @@ - 4.0.0 - - org.springframework.boot - spring-boot-starter-parent - 3.3.4 - - + 4.0.0 + + org.springframework.boot + spring-boot-starter-parent + 3.3.4 + + - org.example - java-list-regex-filter - 1.0-SNAPSHOT + org.example + java-list-regex-filter + 1.0-SNAPSHOT - - - central - Central Repository - https://repo1.maven.org/maven2/ - - + + + central + Central Repository + https://repo1.maven.org/maven2/ + + - - - org.junit.jupiter - junit-jupiter - test - - + + + org.junit.jupiter + junit-jupiter + test + + - - 17 - 17 - UTF-8 - + + 17 + 17 + UTF-8 + \ No newline at end of file diff --git a/core-java-modules/core-java-regex-3/java-list-regex-filter/src/main/java/com/baeldung/RegexFilterExample.java b/core-java-modules/core-java-regex-3/java-list-regex-filter/src/main/java/com/baeldung/RegexFilterExample.java index 47221d84aa79..fbec90326fca 100644 --- a/core-java-modules/core-java-regex-3/java-list-regex-filter/src/main/java/com/baeldung/RegexFilterExample.java +++ b/core-java-modules/core-java-regex-3/java-list-regex-filter/src/main/java/com/baeldung/RegexFilterExample.java @@ -34,9 +34,9 @@ public List method3() { Pattern pattern = Pattern.compile("^t.*"); for (String item : numbers) { - Matcher matcher = pattern.matcher(item); - if (matcher.matches()) - startWithTList.add(item); + Matcher matcher = pattern.matcher(item); + if (matcher.matches()) + startWithTList.add(item); } return startWithTList; From 4e702b06f54e5a738e8400305edd4038544f0fe6 Mon Sep 17 00:00:00 2001 From: programenth <139003443+programenth@users.noreply.github.com> Date: Wed, 25 Dec 2024 16:56:49 +0000 Subject: [PATCH 4/8] organizing files --- .../java-list-regex-filter/pom.xml | 39 ------------------- .../listregexfilter}/RegexFilterExample.java | 2 +- .../RegexFilterExampleUnitTest.java | 2 +- 3 files changed, 2 insertions(+), 41 deletions(-) delete mode 100644 core-java-modules/core-java-regex-3/java-list-regex-filter/pom.xml rename core-java-modules/core-java-regex-3/{java-list-regex-filter/src/main/java/com/baeldung => src/main/java/com/baeldung/listregexfilter}/RegexFilterExample.java (97%) rename core-java-modules/core-java-regex-3/{java-list-regex-filter/src/test/java/com/baeldung => src/test/java/com/baeldung/listregexfilter}/RegexFilterExampleUnitTest.java (94%) diff --git a/core-java-modules/core-java-regex-3/java-list-regex-filter/pom.xml b/core-java-modules/core-java-regex-3/java-list-regex-filter/pom.xml deleted file mode 100644 index fb56c3fedc8c..000000000000 --- a/core-java-modules/core-java-regex-3/java-list-regex-filter/pom.xml +++ /dev/null @@ -1,39 +0,0 @@ - - - 4.0.0 - - org.springframework.boot - spring-boot-starter-parent - 3.3.4 - - - - org.example - java-list-regex-filter - 1.0-SNAPSHOT - - - - central - Central Repository - https://repo1.maven.org/maven2/ - - - - - - org.junit.jupiter - junit-jupiter - test - - - - - 17 - 17 - UTF-8 - - - \ No newline at end of file diff --git a/core-java-modules/core-java-regex-3/java-list-regex-filter/src/main/java/com/baeldung/RegexFilterExample.java b/core-java-modules/core-java-regex-3/src/main/java/com/baeldung/listregexfilter/RegexFilterExample.java similarity index 97% rename from core-java-modules/core-java-regex-3/java-list-regex-filter/src/main/java/com/baeldung/RegexFilterExample.java rename to core-java-modules/core-java-regex-3/src/main/java/com/baeldung/listregexfilter/RegexFilterExample.java index fbec90326fca..a3a934ea0f9c 100644 --- a/core-java-modules/core-java-regex-3/java-list-regex-filter/src/main/java/com/baeldung/RegexFilterExample.java +++ b/core-java-modules/core-java-regex-3/src/main/java/com/baeldung/listregexfilter/RegexFilterExample.java @@ -1,4 +1,4 @@ -package com.baeldung; +package com.baeldung.listregexfilter; import java.util.ArrayList; import java.util.List; diff --git a/core-java-modules/core-java-regex-3/java-list-regex-filter/src/test/java/com/baeldung/RegexFilterExampleUnitTest.java b/core-java-modules/core-java-regex-3/src/test/java/com/baeldung/listregexfilter/RegexFilterExampleUnitTest.java similarity index 94% rename from core-java-modules/core-java-regex-3/java-list-regex-filter/src/test/java/com/baeldung/RegexFilterExampleUnitTest.java rename to core-java-modules/core-java-regex-3/src/test/java/com/baeldung/listregexfilter/RegexFilterExampleUnitTest.java index aac458747869..2bf335a9732e 100644 --- a/core-java-modules/core-java-regex-3/java-list-regex-filter/src/test/java/com/baeldung/RegexFilterExampleUnitTest.java +++ b/core-java-modules/core-java-regex-3/src/test/java/com/baeldung/listregexfilter/RegexFilterExampleUnitTest.java @@ -1,4 +1,4 @@ -package com.baeldung; +package com.baeldung.listregexfilter; import java.util.List; import java.util.Map; From 8ede4c3993078b14e5a0371d386193f93595f94f Mon Sep 17 00:00:00 2001 From: programenth <139003443+programenth@users.noreply.github.com> Date: Wed, 25 Dec 2024 22:41:44 +0530 Subject: [PATCH 5/8] Update README.md --- core-java-modules/core-java-regex-3/README.md | 1 + 1 file changed, 1 insertion(+) diff --git a/core-java-modules/core-java-regex-3/README.md b/core-java-modules/core-java-regex-3/README.md index 8dcea4da4203..1fca5de6e4e0 100644 --- a/core-java-modules/core-java-regex-3/README.md +++ b/core-java-modules/core-java-regex-3/README.md @@ -3,4 +3,5 @@ - [Replacing Strings in Java Using Regex: Back Reference vs. Lookaround](https://www.baeldung.com/java-regex-replace-strings-back-reference-vs-lookaround) - [Extracting Text Between Parentheses in Java](https://www.baeldung.com/java-get-text-between-parentheses) - [Validating Linux Folder Paths using Regex in Java](https://www.baeldung.com/java-regex-check-linux-path-valid) +- [Filtering a List With Regular Expressions in Java](/core-java-modules/core-java-regex-3) - More articles: [[<-- prev]](/core-java-modules/core-java-regex-2) From 4b260fdf3da6433265b02669fe1b4be87ec12143 Mon Sep 17 00:00:00 2001 From: programenth <139003443+programenth@users.noreply.github.com> Date: Sun, 29 Dec 2024 22:25:02 +0530 Subject: [PATCH 6/8] Update README.md --- core-java-modules/core-java-regex-3/README.md | 1 - 1 file changed, 1 deletion(-) diff --git a/core-java-modules/core-java-regex-3/README.md b/core-java-modules/core-java-regex-3/README.md index 1fca5de6e4e0..8dcea4da4203 100644 --- a/core-java-modules/core-java-regex-3/README.md +++ b/core-java-modules/core-java-regex-3/README.md @@ -3,5 +3,4 @@ - [Replacing Strings in Java Using Regex: Back Reference vs. Lookaround](https://www.baeldung.com/java-regex-replace-strings-back-reference-vs-lookaround) - [Extracting Text Between Parentheses in Java](https://www.baeldung.com/java-get-text-between-parentheses) - [Validating Linux Folder Paths using Regex in Java](https://www.baeldung.com/java-regex-check-linux-path-valid) -- [Filtering a List With Regular Expressions in Java](/core-java-modules/core-java-regex-3) - More articles: [[<-- prev]](/core-java-modules/core-java-regex-2) From a0e39f03b267f27338b785589bc8d8e1099d65ce Mon Sep 17 00:00:00 2001 From: programenth <139003443+programenth@users.noreply.github.com> Date: Sun, 29 Dec 2024 17:25:10 +0000 Subject: [PATCH 7/8] updating message name --- .../listregexfilter/RegexFilterExample.java | 16 ++++++++-------- .../RegexFilterExampleUnitTest.java | 8 ++++---- 2 files changed, 12 insertions(+), 12 deletions(-) diff --git a/core-java-modules/core-java-regex-3/src/main/java/com/baeldung/listregexfilter/RegexFilterExample.java b/core-java-modules/core-java-regex-3/src/main/java/com/baeldung/listregexfilter/RegexFilterExample.java index a3a934ea0f9c..23fc669c8c1f 100644 --- a/core-java-modules/core-java-regex-3/src/main/java/com/baeldung/listregexfilter/RegexFilterExample.java +++ b/core-java-modules/core-java-regex-3/src/main/java/com/baeldung/listregexfilter/RegexFilterExample.java @@ -9,7 +9,7 @@ public class RegexFilterExample { - public List method1() { + public List filterUsingPatternAndPredicate() { List fruits = List.of("apple", "banana", "cherry", "apricot", "avocado"); Pattern pattern = Pattern.compile("^a.*"); @@ -19,7 +19,7 @@ public List method1() { .toList(); } - public List method2() { + public List filterUsingStringMatches() { List list = List.of("123", "abc", "456def", "789", "xyz"); return list.stream() @@ -27,7 +27,7 @@ public List method2() { .toList(); } - public List method3() { + public List filterUsingPatternCompile() { List numbers = List.of("one", "two", "three", "four", "five"); List startWithTList = new ArrayList<>(); @@ -42,7 +42,7 @@ public List method3() { return startWithTList; } - public Map> method4() { + public Map> filterUsingCollectorsPartitioningBy() { List fruits = List.of("apple", "banana", "apricot", "berry"); Pattern pattern = Pattern.compile("^a.*"); @@ -53,9 +53,9 @@ public Map> method4() { public static void main(String[] args) { RegexFilterExample regexFilterExample = new RegexFilterExample(); - regexFilterExample.method1(); - regexFilterExample.method2(); - regexFilterExample.method3(); - regexFilterExample.method4(); + regexFilterExample.filterUsingPatternAndPredicate(); + regexFilterExample.filterUsingStringMatches(); + regexFilterExample.filterUsingPatternCompile(); + regexFilterExample.filterUsingCollectorsPartitioningBy(); } } diff --git a/core-java-modules/core-java-regex-3/src/test/java/com/baeldung/listregexfilter/RegexFilterExampleUnitTest.java b/core-java-modules/core-java-regex-3/src/test/java/com/baeldung/listregexfilter/RegexFilterExampleUnitTest.java index 2bf335a9732e..a3c5d5b69d2b 100644 --- a/core-java-modules/core-java-regex-3/src/test/java/com/baeldung/listregexfilter/RegexFilterExampleUnitTest.java +++ b/core-java-modules/core-java-regex-3/src/test/java/com/baeldung/listregexfilter/RegexFilterExampleUnitTest.java @@ -12,25 +12,25 @@ class RegexFilterExampleUnitTest { @Test void whenMethod1Called_thenReturnElementsStartingWithA() { - List newList = regexFilterExample.method1(); + List newList = regexFilterExample.filterUsingPatternAndPredicate(); Assertions.assertEquals(List.of("apple", "apricot", "avocado"), newList); } @Test void whenMethod2Called_thenReturnElementsContainingDig() { - List newList = regexFilterExample.method2(); + List newList = regexFilterExample.filterUsingStringMatches(); Assertions.assertEquals(List.of("123", "789"), newList); } @Test void whenMethod1Called_thenReturnElementsStartingWithT3() { - List newList = regexFilterExample.method3(); + List newList = regexFilterExample.filterUsingPatternCompile(); Assertions.assertEquals(List.of("two", "three"), newList); } @Test void whenMethod1Called_thenReturnElementsStartingWithA4() { - Map> newList = regexFilterExample.method4(); + Map> newList = regexFilterExample.filterUsingCollectorsPartitioningBy(); Assertions.assertEquals(List.of("apple", "apricot"), newList.get(true)); Assertions.assertEquals(List.of("banana", "berry"), newList.get(false)); } From b3660af7018aaabd6a9f8ad3eb42281316bfe7ff Mon Sep 17 00:00:00 2001 From: programenth <139003443+programenth@users.noreply.github.com> Date: Tue, 31 Dec 2024 05:06:12 +0000 Subject: [PATCH 8/8] updated test class --- .../listregexfilter/RegexFilterExampleUnitTest.java | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/core-java-modules/core-java-regex-3/src/test/java/com/baeldung/listregexfilter/RegexFilterExampleUnitTest.java b/core-java-modules/core-java-regex-3/src/test/java/com/baeldung/listregexfilter/RegexFilterExampleUnitTest.java index a3c5d5b69d2b..04cb4fa5a509 100644 --- a/core-java-modules/core-java-regex-3/src/test/java/com/baeldung/listregexfilter/RegexFilterExampleUnitTest.java +++ b/core-java-modules/core-java-regex-3/src/test/java/com/baeldung/listregexfilter/RegexFilterExampleUnitTest.java @@ -11,25 +11,25 @@ class RegexFilterExampleUnitTest { RegexFilterExample regexFilterExample = new RegexFilterExample(); @Test - void whenMethod1Called_thenReturnElementsStartingWithA() { + void whenfilterUsingPatternAndPredicateCalled_thenReturnElementsStartingWithA() { List newList = regexFilterExample.filterUsingPatternAndPredicate(); Assertions.assertEquals(List.of("apple", "apricot", "avocado"), newList); } @Test - void whenMethod2Called_thenReturnElementsContainingDig() { + void whenfilterUsingStringMatchesCalled_thenReturnElementsContainingDig() { List newList = regexFilterExample.filterUsingStringMatches(); Assertions.assertEquals(List.of("123", "789"), newList); } @Test - void whenMethod1Called_thenReturnElementsStartingWithT3() { + void whenfilterUsingPatternCompileCalled_thenReturnElementsStartingWithT3() { List newList = regexFilterExample.filterUsingPatternCompile(); Assertions.assertEquals(List.of("two", "three"), newList); } @Test - void whenMethod1Called_thenReturnElementsStartingWithA4() { + void whenfilterUsingCollectorsPartitioningByCalled_thenReturnElementsStartingWithA4() { Map> newList = regexFilterExample.filterUsingCollectorsPartitioningBy(); Assertions.assertEquals(List.of("apple", "apricot"), newList.get(true)); Assertions.assertEquals(List.of("banana", "berry"), newList.get(false));