testargswords2.java

来自「北京尚学堂J2SE所有的源代码！！北京尚学堂J2SE所有的源代码！！」· Java 代码 · 共 22 行

import java.util.*;
public class TestArgsWords2 {
  private static final int ONE = 1;
  public static void main(String args[]) {
    Map<String, Integer> m = new HashMap<String, Integer>();
    for (int i = 0; i < args.length; i++) {
      
      if(!m.containsKey(args[i])) {
      	m.put(args[i], ONE);
      }
      else {
      	int freq = m.get(args[i]);
      	m.put(args[i], freq + 1);
      }
      
    }
    System.out.println
        (m.size() + " distinct words detected:");
    System.out.println(m);
  }
}