[Solved] My code is throwing a NullPointerException in Java [duplicate]

Question

for(int i = 1; i <= currentSize; i++)
  list[i] = valuesHolder[i];

This part is the culprit. You have to copy contents of ‘list’ to newly created array ‘valuesHolder’. Instead you are doing the other way, which results in ‘null’ entries. The change you have to make is this:

for(int i = 1; i <= currentSize; i++)
  valuesHolder[i] = list[i];

Accepted Answer

for(int i = 1; i <= currentSize; i++)
  list[i] = valuesHolder[i];

This part is the culprit. You have to copy contents of ‘list’ to newly created array ‘valuesHolder’. Instead you are doing the other way, which results in ‘null’ entries. The change you have to make is this:

for(int i = 1; i <= currentSize; i++)
  valuesHolder[i] = list[i];