[Basic Code] Array Create , Sort, add new elements to an ArrayList?

Object array

  int pro_index=20000;

  Progress pro[] = null;
  pro=new Progress[pro_index];

  for(int i=0; i < pro_index ;i++)
  {  
   pro[i]=new Progress();
  }

other type array:
http://alvinalexander.com/java/java-string-array-reference-java-5-for-loop-syntax

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final static int MAX_CAM_NUM=8;
private int[] camLocalPort=new int[MAX_CAM_NUM];
private int[] camRTSPPort=new int[MAX_CAM_NUM];

or

private int camLocalPort[]=new int[MAX_CAM_NUM];
private int camRTSPPort[]=new int[MAX_CAM_NUM];

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Arrays.sort(fileListArr, Collections.reverseOrder());  //resort

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How to add new elements to an array?

reference:

http://stackoverflow.com/questions/2843366/how-to-add-new-elements-to-an-array