Partioning operation Java

@Test
public void givenList_whenParitioningIntoSublistsUsingPartitionBy_thenCorrect() {
    List<Integer> intList = Lists.newArrayList(1, 2, 3, 4, 5, 6, 7, 8);

    Map<Boolean, List<Integer>> groups = 
      intList.stream().collect(Collectors.partitioningBy(s -> s > 6));
    List<List<Integer>> subSets = new ArrayList<List<Integer>>(groups.values());

    List<Integer> lastPartition = subSets.get(1);
    List<Integer> expectedLastPartition = Lists.<Integer> newArrayList(7, 8);
    assertThat(subSets.size(), equalTo(2));
    assertThat(lastPartition, equalTo(expectedLastPartition));
}

Source: baeldung.com

Similar codes

10 votes149 views2 answers
Java substring
Java
8 votes161 views3 answers
How to create a java txt file from programm
Java
0 vote167 views2 answers
Csv file data structure java
Java
2 votes142 views1 answer
How to turn off darkmode for my app in android studio
Java
7 votes138 views2 answers
Skip test case command in maven
Java
0 vote161 views1 answer
How to take array as an argument in java
Java
0 vote158 views2 answers
Beurre
Java
2 votes204 views1 answer
Primefaces calendar min date validation
Java
0 vote145 views1 answer
How to get system date in android
Java
0 vote207 views4 answers
How to stop extending jpa repository to every class in java
Java