import java.io.BufferedReader;
import java.io.FileReader;
import java.util.HashMap;
public class WordCount {
public static void main(String[] args) {
HashMap<String, Integer>mp = new HashMap<>();
mp.put("jack", 1);
mp.put("Tom", 2);
mp.put("rose", 3);
mp.put("jack",4);
// System.out.println(mp);
// System.out.println(mp.size());
// System.out.println(mp.keySet());
// System.out.println(mp.values());
try (BufferedReader in = new BufferedReader(new FileReader("filetest.txt"))
){
String line;
int c = 0;
while(null != (line = in.readLine())) {
String[] words = line.split("\\W");//单词的边界
for(String w : words) {
if(w.trim().length() == 0) continue;
// if(w.trim().length() == 1) {
// //长度为1
// char cc = w.charAt(0);
// if(!Character.isLetterOrDigit(c)) {
// continue;
// }
// }
w = w.toLowerCase();//不分大小写的统计
if(!mp.containsKey(w)) {
mp.put(w, 1);
}else {
int n = mp.get(w);
mp.put(w, n+1);
}
}
}
for(String key : mp.keySet()) {
int v = mp.get(key);
System.out.printf("%s\t%d\n",key,v);
}
} catch (Exception e) {
// TODO: handle exception
}
}
}