hw13_11.java

java的一些关于多线程

import java.io.*;
public class hw13_11
{
   public static void main(String args[]) throws IOException
   {
      FileInputStream fi=new FileInputStream("c:\\java\\drugs.txt");
      int a=0,e=0,i=0,o=0,u=0;
      int num=fi.available();
      byte ba[]=new byte[num];
      
      fi.read(ba);
      
      for(int k=0;k<num;k++)
      switch(ba[k])
      {
      	 case 'a':
      	    a++;
      	    break;
      	 case 'e':
      	    e++;
      	    break;      	   
      	 case 'i':
      	    i++;
      	    break;
      	 case 'o':
      	    o++;
      	    break;
      	 case 'u':
      	    u++;
      	    break; 
       }     	   
      	   
      System.out.println("number of 'a' = "+a);           
      System.out.println("number of 'e' = "+e);           
      System.out.println("number of 'i' = "+i);           
      System.out.println("number of 'o' = "+o);           
      System.out.println("number of 'u' = "+u);           
      
       
      fi.close();
   }         
}