/*import java.io.BufferedReader;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
class Demo{
public static void main(String[] args) throws IOException {
readTist();
}
public static void readTist() throws IOException {
InputStream in = System.in;
InputStreamReader inputStreamReader = new InputStreamReader(in);
BufferedReader bufferedReader = new BufferedReader(inputStreamReader);
System.out.println("读到的内容 :"+bufferedReader.readLine());
}
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
class Demo{
public static void main(String[] args) throws IOException {
readTist();
}
public static void readTist() throws IOException {
InputStream in = System.in;
InputStreamReader inputStreamReader = new InputStreamReader(in);
BufferedReader bufferedReader = new BufferedReader(inputStreamReader);
System.out.println("读到的内容 :"+bufferedReader.readLine());
}
}*/
//转换流,将相应的字节流转换成字符流
//也可以用在转换转换编码格式中