CODEWITHSUNDEEP
multithreading
Bachas
Bachas

Reputation: 243

multi threading in java with for loop

there is an list of student entity.

List<Student> student = new Arraylist<Student>();

where 

public student{
  private id;
  private name;
  private class;
  //setter and getter
}

By the foreach loop:

for(Student std : student){
  System.out.println(std.getName());
}

above is the normal way. But how to print them with multithreading? three student details together print. means taking three threads toghter

Upvotes: 0

Views: 59

Answers (2)

GhostCat
GhostCat

Reputation: 140417

A simple solution:

studentList.parallelStream().forEach(System.out::println);

This turns your list into a stream, and for each element in that stream, System.out.println() is invoked.

The non-stream solution is of course much more complicated. It would required you to define multiple threads, including a "pattern" how these threads work on that shared list.

For doing it with "raw threads": that is simply, straight forward stuff: you have to "slice" your data into buckets, and then define threads that work different buckets. See here as starting point.

Upvotes: 1

matt
matt

Reputation: 12347

This doesn't serve any practical purpose.

for(Student  std:student){
    new Thread(()->{
        System.out.println(std.getName);
        System.out.println(std.getName);
    }).start();
}

This is also worse than the answer above.

Upvotes: 1

Related Questions