FilesExpand file tree

 master

/

MainCollections.java

Copy path

Blame

More file actions

Blame

More file actions

Latest commit

 

History

History

History

62 lines (48 loc) · 1.86 KB

 master

/

MainCollections.java

Copy path

Top

File metadata and controls

• Code
• Blame

62 lines (48 loc) · 1.86 KB

Raw

Copy raw file

Download raw file

Open symbols panel

Edit and raw actions

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

41

42

43

44

45

46

47

48

49

50

51

52

53

54

55

56

57

58

59

60

61

62

package ru.javawebinar.basejava;

import ru.javawebinar.basejava.model.Resume;

import java.util.*;

public class MainCollections {

private static final String UUID_1 = "uuid1";

private static final Resume RESUME_1 = new Resume(UUID_1, "Name1");

private static final String UUID_2 = "uuid2";

private static final Resume RESUME_2 = new Resume(UUID_2, "Name2");

private static final String UUID_3 = "uuid3";

private static final Resume RESUME_3 = new Resume(UUID_3, "Name3");

private static final String UUID_4 = "uuid4";

private static final Resume RESUME_4 = new Resume(UUID_4, "Name4");

public static void main(String[] args) {

Collection<Resume> collection = new ArrayList<>();

collection.add(RESUME_1);

collection.add(RESUME_2);

collection.add(RESUME_3);

for (Resume r : collection) {

System.out.println(r);

if (Objects.equals(r.getUuid(), UUID_1)) {

// collection.remove(r);

}

}

Iterator<Resume> iterator = collection.iterator();

while (iterator.hasNext()) {

Resume r = iterator.next();

System.out.println(r);

if (Objects.equals(r.getUuid(), UUID_1)) {

iterator.remove();

}

}

System.out.println(collection.toString());

Map<String, Resume> map = new HashMap<>();

map.put(UUID_1, RESUME_1);

map.put(UUID_2, RESUME_2);

map.put(UUID_3, RESUME_3);

// Bad!

for (String uuid : map.keySet()) {

System.out.println(map.get(uuid));

}

for (Map.Entry<String, Resume> entry : map.entrySet()) {

System.out.println(entry.getValue());

}

List<Resume> resumes = Arrays.asList(RESUME_1, RESUME_2, RESUME_3);

resumes.remove(1);

System.out.println(resumes);

}

}