package javaapplication1;
import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
import java.util.HashMap;
public class JavaApplication1 {
public static void main(String[] args) throws IOException {
try {
HashMap<Integer, Integer> hash = new HashMap<>();
try (BufferedReader reader = new BufferedReader(new FileReader("d:\\data.txt"))) {
while (true) {
String line = reader.readLine();
if (line == null) {
break;
}
for (int i = 0; i < line.length(); i++) {
char ch = line.charAt(i);
if (ch != ' ') {
int n = hash.getOrDefault((int) ch, 0);
hash.put((int) ch, n + 1);
}
}
}
}
for (int key : hash.keySet()) {
System.out.println((char) key + " - " + hash.get(key));
}
} catch (IOException ex) {
System.out.println(ex);
}
}
}
/*
run:
a - 4
c - 4
# - 1
h - 2
i - 1
j - 2
+ - 2
n - 1
o - 1
p - 4
r - 1
s - 1
t - 2
v - 2
y - 1
*/
