java中的java.lang.IndexOutOfBoundsException

Question

I have below java class where i am trying to import the data from CSV file and insert into oracle database table..

When i am trying to run this java class i am getting error as 'java.lang.IndexOutOfBoundsException'. I just try to see the insert statements using log.info("Insert values to table" +sql); and i can see some insert statement are generated and then its throwing an error.

I am quiet new to java so not sure how to handle this exception.

Below is my code:

Answer 1

I am not sure what line is causing the error - could you include the line number or your stack trace? However, this worries me:

for (int i = 0; i < headings.size(); i++) {
                String columnName = headings.get(i);
                String value = columns.get(i); // <- this

You are iterating with i through headings.size() , but what if headings.size() is greater than columns.size() ? Then your program will try to access an index of columns that does not exist, which would give you an IndexOutOfBounds exception.