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Java Program To Find Out Particular Character Occurence In A String

 Java Program To Find Out Particular Character Occurrence In A String

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1) Approach -1
==================
public class CharOccuranceInString {

    public static void main(String[] args) {
        // Find Out the "J" character occurrence from the below String
        String str = "Java Programming Java OOPS";

        Integer length_without_char = str.length();

        Integer length_after_removal = str.replace("J", "").length();

        Integer total_length = 0;
        total_length = length_without_char - length_after_removal;
        System.out.println("The character occurance is:" + total_length);

    }

}

2) Approach -2
====================
public class AllCharInString {

    public static void main(String[] args) {

        String str = "Java Programming Java OOPS";
        char ch[] = str.toCharArray();
        Integer count=0;
        for(int i = 0; i < ch.length ; i++)
        {
            if('a' == ch[i])
            {
                count++;
            }
        }
        System.out.println("The Character Occurence:" + count);

    }

}

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