Mọi người giải thích cho em đoạn code này với ạ
StringTokenizer tokenizer = new StringTokenizer(content,"<>.,/?':;[]{}|_-+=!@#$%^&*~()~\\\" ",false);
/*
* To change this license header, choose License Headers in Project Properties.
* To change this template file, choose Tools | Templates
* and open the template in the editor.
*/
package counter;
/**
*
* @author Zinh
*/
import java.util.HashMap;
import java.util.Map;
import java.util.Scanner;
import java.util.StringTokenizer;
public class Counter {
private Map<Character, Integer> charCounter = new HashMap<Character, Integer>();
private Map<String, Integer> wordCounter = new HashMap<String, Integer>();
/**
* @param args the command line arguments
*/
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
System.out.println("Enter your content: ");
String content = scanner.nextLine();
Counter counter = new Counter();
counter.analyze(content);
counter.display();
}
public void display() {
System.out.println(wordCounter);
System.out.println(charCounter);
}
public void analyze(String content) {
for (char ch : content.toCharArray()) {
if (Character.isSpaceChar(ch)) continue;
if (!Character.isLetter(ch)) continue;
if (!charCounter.containsKey(ch)) {
charCounter.put(ch, 1);
} else {
charCounter.put(ch, ((int) charCounter.get(ch)) + 1);
}
}
StringTokenizer tokenizer = new StringTokenizer(content,"<>.,/?':;[]{}|_-+=!@#$%^&*~()~\\\" ",false);
while (tokenizer.hasMoreTokens()) {
String token = tokenizer.nextToken();
if (!wordCounter.containsKey(token)) {
wordCounter.put(token, 1);
} else {
wordCounter.put(token, ((int) wordCounter.get(token)) + 1);
}
}
}
}
83% thành viên diễn đàn không hỏi bài tập, còn bạn thì sao?