public with sharing class NameUpdates
{
public list<account> display()
{
list<account>acc = [Select name from account limit 50];
list<account>accupd;
for(account acc1:acc)
{
if(acc1.name == 'Rahul')
{
acc1.name = 'Ronak';
accupd.add(acc1);
update accupd;
}
}
return accupd;
}
}
Line: 12, Column: 1 System.NullPointerException: Attempt to de-reference a null object