arrays of random numbers

hello everyone I got this codes but I need to make some constraint on my arrays: public static void main (String[] args)

{Random myRand = new Random ();

// Pick array size T from 1 to 100.
int T = 1 + myRand.nextInt(5);
System.out.println("T="+(T));
int C = 1 + myRand.nextInt(100);
System.out.println("C="+(C));

// Declare array of size T.
int [] production_cost=new int [T];
int []stock1= new int [T];
int[]stock2= new int [T];
int[]fix_cost1= new int [T];
int[]fix_cost2= new int [T];
int[] Demands=new int[T];
// Fill the array with random numbers.
 {for (int i=0;  i< T; i++){
  production_cost[i] = myRand.nextInt(Integer.max(0,20));
   stock1[i] = myRand.nextInt(Integer.max(0, 20));
   stock2[i]= myRand.nextInt(Integer.max(0,20));

  fix_cost1[i]=myRand.nextInt(Integer.max(10, 20) );
  fix_cost2[i]=myRand.nextInt(Integer.max(20,30));
  Demands[i] = myRand.nextInt(Integer.max(1,C));}
    System.out.println("p2::"+Arrays.toString(production_cost));
    System.out.println("h1::"+Arrays.toString(stock1));
    System.out.println("h2::"+Arrays.toString(stock2));
    System.out.println("K1::"+Arrays.toString(fix_cost1));
    System.out.println("K2::"+Arrays.toString(fix_cost2));
    System.out.println("d::"+Arrays.toString(Demands));