CODEWITHSUNDEEP
java
valik
valik

Reputation: 2094

How to solve OutOfMemoryError: Java heap space

I am getting this error when running this code 

private static List<Integer> array(int num) {
       List<Integer> value = new ArrayList<>();

        while (num != 1) {
            if(num % 2 == 0) {
             value.add(num + 2);
             }else {
              value.add(num * 3 + 1);
             }
        }
       System.out.println(value);
        return value;
    }

Can i get an explanation of whats wrong ?

Upvotes: 1

Views: 192

Answers (2)

Taha
Taha

Reputation: 65

Your while condition never equates to false, so the loop runs endlessly. As shmosie said, you never modify num, so maybe look into modding num, or performing some operation on it so that it actually equals 1 in order for your loop to stop

Upvotes: 2

Arthur Musgrove
Arthur Musgrove

Reputation: 111

You have an infinite loop. Each iteration will add to the List until you run OutOfMemory. You need to change num during the loop in such a way that it becomes 1 at some point so the loop ends.

Upvotes: 5

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