First Recurring Character Java Program

Hi Folks,

Below the source code for FirstRecurringCharacter in java.

package com.raj.programs;

import java.util.Hashtable;

public class FirstRecurringCharacter {

public static String firstRecurring(String inputString) {

Hashtable<String, String> table =  new Hashtable<>(inputString.length());

for(char c : inputString.toCharArray()) {
if(table.containsKey(String.valueOf(c))){
System.out.println("First Recurring character is : "+c);
return String.valueOf(c);
}else {
table.put(String.valueOf(c), String.valueOf(c));
}
}
System.out.println("Not found");
return null;
}

public static void main(String[] args) {
FirstRecurringCharacter.firstRecurring("ABCDEFA");
FirstRecurringCharacter.firstRecurring("ABCDEF");
}

}