What is wrong with each of the following code segments?

a. ArrayList values = new ArrayList();

b. ArrayList values = new ArrayList();

c. ArrayList values = new ArrayList;

d. ArrayList values = new ArrayList();
for (int i = 1; i <= 10; i++)
{
values.set(i - 1, i * i);
}

e. ArrayList values;
for (int i = 1; i <= 10; i++)
{
values.add(i * i);
}