import java.io.StringReader;
import java.io.StringWriter;
import java.io.IOException;
public class StringRW9_12 
{
	public static void main(String args[]) throws IOException
	{			
		String s="abcdefg";
		StringReader stringin=new StringReader(s);
		System.out.println("字符串输入流的第一个字符是："+(char)stringin.read());
		stringin.mark(3);
		stringin.skip(3);
		System.out.println("向后跳跃3个位置的字符是："+(char)stringin.read());
		stringin.reset();
		System.out.println("回复到标记位置的字符是："+(char)stringin.read());
		StringWriter stringout=new StringWriter();
		stringout.write(stringin.read());
		System.out.println("stringout中的字符是："+stringout.toString());
		stringin.close();
		stringout.close();
	}
}