Hi everyone, I am new to Java.
Sth weird here:
ArrayList<ArrayList <Integer>> oneItem = new ArrayList<ArrayList <Integer>>();
ArrayList<ArrayList <Integer>> kItem = new ArrayList<ArrayList <Integer>>();
ArrayList<Integer> temp1 = new ArrayList<Integer>();
ArrayList<Integer> temp2 = new ArrayList<Integer>();
ArrayList<Integer> temp3 = new ArrayList<Integer>();
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for(int i=0;i<oneItem.size();i++)
{
temp1 = (ArrayList)oneItem.get(i);
for(int j=i+1; j<oneItem.size();j++)
{
temp2 = (ArrayList)(oneItem.get(j)); //temp2=static
temp3.add(temp1.get(0));
temp3.add(temp2.get(0));
kItem.add(temp3); //I suppose to get an arraylist of arraylist like[[1,2],[4,5]....],but I got [[],[],[],....]].
temp3.clear();
}
}
I can't get the intended value for kItem but an arraylist of arraylist with no value in it? where is the mistake of my program?
Thanks in advance.
Message was edited by:
microX
Message was edited by:
microX