Q:

issue creating a double array list

Is there any reason the fallowing code would give A compile error ? 
Import java.util.*; 

public class Storageclass
// class used to store the Student data 
{
 // creates the private array list needed.  
 private ArrayList<String> nameList = new ArrayList<String>();
 private ArrayList<double> GPAList = new ArrayList<double>();
 private ArrayList<double> passedList = new ArrayList<double>();
}

this is in a class access by a main file there is more in the class by it not part of this error.  when I run this the two double arrayList give me this error. 
Storageclass.java:8: error: unexpected type
 private ArrayList<double> GPAList = new ArrayList<double>(1);
                   ^
  required: reference
  found:    double

I am not sure why or what that error means any help would be appreciated.  
~ Thanks for the help was a embarrassingly novice mistake I made, but hope full this can help some other person.  

A:

Since all generic types <T> are erased at runtime to Object every type you put in place of T must also extend Object.  So you can't set T to be primitive type like double but you can use its wrapper class Double.  Try this way:
private List<Double> passedList = new ArrayList<Double>();

or since Java7 little shorter version
private List<Double> passedList = new ArrayList<>();

Also don't worry if you try to add variable of double type to such array since it will be autoboxed to Double.