java BufferedReader

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import java.io.BufferedReader;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStreamReader;

public class TestBR {
    public static void main(String[] args) throws IOException {
        // BufferedReader包装了字节流，并且可以按指定的编码集将字节转成字符
        BufferedReader br = new BufferedReader(new InputStreamReader(new FileInputStream("d:/a.txt"),"UTF-8"));

        String line = br.readLine(); // 按照回车符来判断是否满一行，并用上面指定的编码集来将二进制数据转成字符串
        System.out.println(line);

        System.out.println("----------------");

        while((line = br.readLine())!=null) {
            System.out.println(line);
        }
        br.close();
    }
}