Question

How to count the total substring of a String from the last index position using lastIndexOf() in Java

Answer 1

package javaapplication1;

public class JavaApplication1 {

    public static void main(String[] args) {

        try {

            String s = "java c++ java c java c# java";

            int i = s.length() - 1;
            int count = 0;

            while ((i = s.lastIndexOf("java", i)) >= 0) {
                System.out.println(s.substring(i));
                i--;
                count++;
            }
            System.out.println("Found: " + count + " substring");

            }catch (Exception e) {
            System.out.print(e.toString());
        }
        }
    }

/*
             
run:
       
java
java c# java
java c java c# java
java c++ java c java c# java
Found: 4 substring
    
*/

 

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