Java - Streams: Difference between revisions
| Line 10: | Line 10: | ||
==Samples== | ==Samples== | ||
=== Print all Students name=== | |||
<source lang="Java"> | <source lang="Java"> | ||
Student student; | Student student; | ||
| Line 19: | Line 19: | ||
} | } | ||
</source> | </source> | ||
=== Get a Student === | |||
<source lang="Java"> | <source lang="Java"> | ||
Student student = getNextStudent(); | Student student = getNextStudent(); | ||
while (student != null) { | while (student != null) { | ||
collection.add(student); | collection.add(student); | ||
} | |||
</source> | |||
<source lang="Java"> | |||
Student student; | |||
Iterator iterator = collection.iterator(); | |||
while (iterator.hasNext()) { | |||
student = (Student)(iterator.next()); | |||
System.out.println(student.getFullName()); | |||
} | } | ||
</source> | </source> | ||
Revision as of 16:56, 18 October 2019
Collections
Main Methods
<source lang="Java"> - add(Object o) //Adds the specified object to the collection. - remove(Object o) //Removes the specified object from the collection. - clear() //Removes all elements from the collection. - size() //Returns an integer that indicates how many elements are currently in the collection. - iterator() //Returns an object that can be used to retrieve references to the elements in the collection. </source>
Samples
Print all Students name
<source lang="Java"> Student student; Iterator iterator = collection.iterator(); while (iterator.hasNext()) {
student = (Student)(iterator.next()); System.out.println(student.getFullName());
} </source>
Get a Student
<source lang="Java"> Student student = getNextStudent(); while (student != null) {
collection.add(student);
} </source> <source lang="Java"> Student student; Iterator iterator = collection.iterator(); while (iterator.hasNext()) {
student = (Student)(iterator.next()); System.out.println(student.getFullName());
} </source>
A voir
- Parallel stream
