Question

In Java, write a method which, given an array of Strings and a char as the parameters, will find the number of Strings which contained that char (in any position). The method will return that number back to the main program

Answer 1

Dear Student ,

As per requirement submitted above kindly find below solution.

Java method :

//java method to count the characters in the strings
   public static int countChar(String [] strings,char c)
   {
       //declaring variable to store character counts
       int count=0;
       //using for loop
       for(int i=0;i<strings.length;i++)
       {
           //checking whether string contains character c
           if(strings[i].indexOf(c)!=-1)
           {
               //if character c found in the strings[i] then
               //increment count
               count++;
           }
       }
       return count;
   }

**********************************

Demonstration :

Here new java class with name "charCount.java" is created which contains below code.

charCount.java :

//Java class
public class charCount {
   //main() method
   public static void main(String[] args) {
       //declaring array to strings
       String [] names=new String[]{"Virat","Rahul","Jim"};
       //call method and print number of number of string contains given character
       System.out.println("Number of strings contains a : "+countChar(names, 'a'));
       }
      
   //java method to count the characters in the strings
   public static int countChar(String [] strings,char c)
   {
       //declaring variable to store character counts
       int count=0;
       //using for loop
       for(int i=0;i<strings.length;i++)
       {
           //checking whether string contains character c
           if(strings[i].indexOf(c)!=-1)
           {
               //if character c found in the strings[i] then
               //increment count
               count++;
           }
       }
       return count;
   }
  

}

==================================

Output :Compile and Run charCount.java to get the screen as shown below

Screen 1:charCount.java

NOTE :PLEASE FEEL FREE TO PROVIDE FEEDBACK ABOUT THE SOLUTION.

Answer 2

public class StringCharCounter {

    public static int countStringsContainingChar(String[] strings, char character) {

        int count = 0;

        

        for (String str : strings) {

            if (str.indexOf(character) != -1) {

                count++;

            }

        }

        

        return count;

    }

    

    public static void main(String[] args) {

        // Example usage

        String[] strings = {"Hello", "World", "Java", "Programming"};

        char character = 'o';

        

        int count = countStringsContainingChar(strings, character);

        System.out.println("Number of strings containing the character '" + character + "': " + count);

    }

}