How do I write the following method using recursion in JAVA: public static void

Question

How do I write the following method using recursion in JAVA:

   public static void printStars(int rows)
   {
       for (int x = 1; x <= rows; x++)
       {
           System.out.print("*");
       }

   }

public boolean isIn(String pattern, String target)
   {
       return true;
   }

//main:

public static void main(String[] args)
   {

recTest utils = new recTest();
       utils.printStars(0);
       utils.printStars(5);

String[] patterns = { "al ", "Sta", "eat", "ney" };
       for(int ii = 0; ii < patterns.length; ++ii)
       {
           System.out.println("Is this pattern '" + patterns[ii] + "' in 'Barney Station? " + utils.isIn(patterns[ii], "Barney Sation"));
       }

}

Explanation / Answer

package myProject;

public class RecTest
{
   //Recursive call method to print *
   public static void printStars(int rows)
   {
       //Checks if rows value is zero then stop
       if(rows == 0)
           return;
       //Otherwise print the star and recursively call the method till rows value is zero
       else
       {
           //Prints *
           System.out.print("*");
           //Calls the method by decrementing the value of rows by 1
           printStars(--rows);
       }//End of else
   }//End of method
   //Method to return true
   public boolean isIn(String pattern, String target)
   {
       return true;
   }//End of method
   //Main method
   public static void main(String[] args)
   {
       RecTest utils = new RecTest();
       utils.printStars(0);
   utils.printStars(5);
   String[] patterns = { "al ", "Sta", "eat", "ney" };
   //Loops till the length or patterns
   for(int ii = 0; ii < patterns.length; ++ii)
   {
       System.out.println("Is this pattern '" + patterns[ii] + "' in 'Barney Station? " + utils.isIn(patterns[ii], "Barney Sation"));
   }//End of loop
   }//End of main
}//End of class

Output:

*****Is this pattern 'al ' in 'Barney Station? true
Is this pattern 'Sta' in 'Barney Station? true
Is this pattern 'eat' in 'Barney Station? true
Is this pattern 'ney' in 'Barney Station? true

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