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stream.map(mapper)

Anna Helena Drumond answered on October 12, 2022 Popularity 10/10 Helpfulness 2/10

answer stream.map(mapper)

stream.map(mapper)

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It then put the Integer into another stream which is then collected using Collectors.toList().

List<String> listOfStrings = Arrays.asList("1", "2", "3", "4", "5");
 
List<Integer> listOfIntegers = listOfStrings.stream()
        .map(Integer::valueOf)
        .collect(Collectors.toList());
 
System.out.println(listOfIntegers);Program output:[1, 2, 3, 4, 5]
************************************************************************
Java example to find all possible distinct salaries for a List of employees.

List<Employee> employeesList = Arrays.asList(
new Employee(1, "Alex", 100), new Employee(2, "Brian", 100),new Employee(3, "Charles", 200),new Employee(4, "David", 200),
 new Employee(5, "Edward", 300),new Employee(6, "Frank", 300));
  
List<Double> distinctSalaries = employeesList.stream()
                        .map( e -> e.getSalary() )
                        .distinct()
                        .collect(Collectors.toList());

System.out.println(distinctSalaries);Program output:[100.0, 200.0, 300.0]

Popularity 10/10 Helpfulness 2/10 Language java

Source: Grepper

Tags: java

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Contributed on Oct 12 2022

Anna Helena Drumond

0 Answers Avg Quality 2/10

stream.map(mapper)

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