Count Characters
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import java.util.Map;
import java.util.HashMap;
class Main {
public static void main(String[] args) {
countChar("banana");
}
public static void countChar(String s){
Map<Character, Integer> charMap = new HashMap<>();
for(char a : s.toCharArray()){
if(!charMap.containsKey(a)){
charMap.put(a,1);
}
else{
charMap.put(a, charMap.get(a) + 1);
}
}
System.out.println(charMap.toString());
}
}
Java
INFO