输入字符串（以空格分隔），将字符串中的单词以键值对方式输出到指定文件

public class PrintMap {
	/*
	 * 输入一串以空格分隔的字符串，调用自定义方法，将每个字符及其个数以键值对方式写入指定文件
	 */
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		System.out.println("请输入字符串(以空格分隔)：");
		print(sc.next());
	}
	
	/*
	 * 定义方法，用高效流，将字符串中的内容以键值对的形式写到自定义目录的count.txt文件中
	 */
	public static void print(String str1) {
		String[] str = str1.split(" ");
		HashMap map = new HashMap();
		BufferedWriter bfw = null;
		for(int i = 0; i < str.length; i++) {
			if(map.containsKey(str[i])) {
				map.put(str[i], map.get(str[i]) + 1);
			}else {
				map.put(str[i], 1);
			}
		}
		try {
			bfw = new BufferedWriter(new FileWriter("e:\\demo1\\count.txt"));
			Set set = map.keySet();
			Iterator keyIt = set.iterator();
			while(keyIt.hasNext()) {
				String key = keyIt.next();
				Integer value = map.get(key);
				String pro = key + "=" + value;
				bfw.write(pro);
				bfw.newLine();
				bfw.flush();
			}
			
		}catch(IOException ex) {
			System.out.println(ex);
			throw new RuntimeException("写入文件失败");
		}finally {
			try {
				if(bfw != null)
					bfw.close();
			}catch(IOException ex) {
				throw new RuntimeException("释放资源失败");
			}
		}
		
	}
}