Java - arrayList of Integer not initialize -

I do not know how to start synapseNeuronList array list got zero error

  Private Arrestist & Lt; Integer & gt; SynapseNeuronList; (Int j = 1; j & lt; strline.split (""). Lanti-1; J ++) {synapseNeuronList.add (integer.valuef (strLine.split ("") [j])); }    
 
 
 Your  synapseNeuronList  should be in the context of some ArrayList (Or its subtype) to use the object object,  new  operator such as  
  Private Arrestists & lt; Integer & gt; SynapseNeuronList = new array list & lt; Integer & gt; ();