Search String using index Of Example

1. /*
     Java Search String using indexOf Example
     This example shows how we can search a word within a String object using
     indexOf method.
   */
   
   
   public class SearchStringExample  
   {
   
   
     public static void main(String[] args)  
   {
       //declare a String object
       String strOrig = “Hello world Hello World”;
   
   
       /*
         To search a particular word in a given string use indexOf method.
         indexOf method. It returns a position index of a word within the string
         if found. Otherwise it returns -1.
       */
   
   
       int intIndex = strOrig.indexOf(“Hello”);
   
   
       if(intIndex == – 1){
         System.out.println(“Hello not found”);
       }else{
         System.out.println(“Found Hello at index “ + intIndex);
       }
   
   
       /*
         we can also search a word after particular position using
         indexOf(String word, int position) method.  
       */
   
   
       int positionIndex = strOrig.indexOf(“Hello”,11);
       System.out.println(“Index of Hello after 11 is “ + positionIndex);
   
   
       /*
         Use lastIndexOf method to search a last occurrence of a word within string.
       */
       int lastIndex = strOrig.lastIndexOf(“Hello”);
       System.out.println(“Last occurrence of Hello is at index “ + lastIndex);
   
   
     }
   }
   
   
   /*
   Output of the program would be :
   Found Hello at index 0
   Index of Hello after 11 is 12
   Last occurrence of Hello is at index 12
   */