Question

Write a method that finds each occurrence of “abc_” in a String input (where _ is a single character) and prints “bc_” for each such occurrence. For example, findAbc(“abcdefabcghi”) should print:

Answer 1

program code to copy

findString.java

public class findString
{
   public static void main(String args[])
   {
       findString fs = new findString();
       fs.test();      
   }
  
   public void findAbc(String input)
   {
        int index = input.indexOf("abc");
        while (true)
        {
            if (index == -1||(index+3) >= input.length())
            {
                break;
            }
            if((index+3)<input.length())
            {
               String found = input.substring(index+1, index+4);
               System.out.println(found);
               index = input.indexOf("abc", index+4);
            }
        }
        System.out.println("------End 2---------");
   }
  
   public void test()
   {
       findAbc("abcdefabcghi");
       findAbc("abcd");
   }

}

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program screenshot

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sample output

$Problems @ Javadoc Declaration Console X <terminated> findString [Java Application] C:\Program Files\Java\jre1.8.0_201\bin\ja$