how to write a linear search in java code example

Example: Linear search in java

public class LinearSearchExample
{
   // here function returns index of element x in arrLinear
   static int searchNumber(int[] arrLinear, int key)
   {
      int num = arrLinear.length;
      for(int a = 0; a < num; a++)
      {
         // here we are returning the index of the element if found
         if(arrLinear[a] == key)
            return a;
      }
      // here we are returning -1 if element is not found
      return -1;
   }
   public static void main(String[] args)
   {
      int[] arrLinear = {15, 25, 35, 55, 75, 95};
      int key = 55;
      int output = searchNumber(arrLinear, key);
      if(output == -1)
      {
         System.out.println("Sorry!!Element is not present");
      }
      else
      {
         System.out.println("Element is present at index " + output);
      }
   }
}