java文本输入

package printWrite;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.PrintWriter;
import java.io.Writer;
public class printtxt {
public static void main(String[]args) throws IOException
{
String str=null;
try {
BufferedReader in=new BufferedReader(new 
InputStreamReader(System.in));//直接从键盘上读数据
//从文件as.txt中读数据
BufferedReader in1=new BufferedReader(new 
InputStreamReader(new  FileInputStream("e:\\as.txt")));

str=in.readLine();
} catch (FileNotFoundException e) {
e.printStackTrace();
}
System.out.println(str);
System.out.println("finish");
}
}