Java Streams Interview Question - 01 - Print Sum Of All Numbers

Java Streams Interview Question - 01 - Print Sum Of All Numbers

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[soumyajit]

Thanks Naveen for making short videos on the latest features of Java JDK 1.8.It really saves a lot of time and also helps to stay updated and adds to our knowledge.Thanks

[Uni_Dynamic]

For me, Naveen is the another name of oxygen..god bless you Naveen...

[nikunjpatel]

Grate tutorial... adding my worth of penny

List<Integer>list = Arrays.asList(1, 4, 5, 6, 1, 4);
int sum3 = list.stream().mapToInt(i -> i).sum();
System.out.println("Sum of numbers ::" + sum3);

[pratapjavasingh]

Aaj pura video series dekh dalunga wd code 😊👍nice video series 😊

[prajwalgowda]

Thanks a lot for making this video…waiting for this from long time

[santooveluri]

Thanks for the video Naveen.... could you pls let me know how to get count of duplicate characters present in String for ex: a:4, b:5 times

[binaramani]

Your answer is correct but you have used extra memory. Storing an object requires more memory. Then why use stream?.
Even with your example you could have created IntStream instead of Stream. Or you could do this
List<Integer> integers = Arrays.asList(1, 2, 3, 4, 5);

[yashuverma]

what was the reason to convert list of integers to array list ?

[jayeshdalal]

what is the time complexity for this is it same as o(n) ?

[saikumarperamsetty]

please Naveen Give me Some Eclipse Shortcuts for Java Developers

[deependra]

hi naveen, any github repository Link ??

[sorboni.]

Thanks for video. Is it ok if I write this kind solution?
List<Integer> list = Arrays.asList(2, 6, 2, -9, 2, 45, 33, 21, 3, 8, 22, -63);
int sum = 0;
for (Integer num : list) {
sum += num;
}
System.out.println("sum of numbers: " + sum);