//Defining array
String [] arrayOfProducts = new List<String>();

//Adding elements in Array
arrayOfProducts.add('HCL');
arrayOfProducts.add('H2SO4');
arrayOfProducts.add('NACL');
arrayOfProducts.add('H2O');
arrayOfProducts.add('N2');
arrayOfProducts.add('U296');

for (Integer i = 0; i<arrayOfProducts.size(); i++) {
   //This loop will print all the elements in array
   system.out.println('Values In Array: '+arrayOfProducts[i]);
}