e8_1.java

JAVA 统计输入的一句话中的单词数的小程序

/**
 * @(#)e8_1.java
 *
 * e8_1 application
 *
 * @author 
 * @version 1.00 2009/4/6
 */
 
import java.io.*;
public class e8_1 {
    
    public static void main(String[] args)throws Exception {
    	String s="";
    	
    	try
		{
			System.out.print("Please input a line of string:");
			BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
			s = br.readLine();
		}
		catch(IOException e){}
	
		int num=0;
    	for(int i=0;i<s.length()-1;i++)
    	{
    		if(s.charAt(i)==' '&&s.charAt(i+1)!=' ')   		
    			num++;
    	}
    
    	System.out.println("The number of words in the line is "+num);
    }
}