2016年2月17日作业

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;

public class Test01 {
 public static void main(String[] args) {
  try {
   FileInputStream fis=new FileInputStream("D:\\t07\\hello.txt");
   byte[]bytes=new byte[1024];
   int data=0;
   while((data=fis.read(bytes))!=-1){
    String b=new String(bytes,0,data);
    System.out.println(b);
   }
  } catch (FileNotFoundException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  } catch (IOException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  }
 }
}

import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;

public class Test02 {
 public static void main(String[] args) {
  try {
   FileReader fr=new FileReader("D:\\t07\\hello.txt");
   char [] a=new char[1024];
   int data=0;
   while((data=fr.read(a))!=-1){
    String b=new String(a, 0, data);
    System.out.println(b);
   }
  } catch (FileNotFoundException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  } catch (IOException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  }
 }
}

import java.io.BufferedReader;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;

public class Test03 {
 public static void main(String[] args) {
  FileReader fr;
  try {
   fr = new FileReader("D:\\t07\\hello.txt");
   BufferedReader br=new BufferedReader(fr);
   char [] a=new char[1024];
   int data=0;
   while((data=br.read(a))!=-1){
    String b=new String(a, 0, data);
    System.out.println(b);
   }
  } catch (FileNotFoundException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  } catch (IOException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  }
 }
}

import java.io.DataInputStream;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;

public class Test04 {
 public static void main(String[] args) {
  FileInputStream fis;
  try {
   fis = new FileInputStream("D:\\t07\\hello.txt");
   DataInputStream dis=new DataInputStream(fis);
   byte [] a=new byte[1024];
   int data=0;
   while((data=dis.read(a))!=-1){
    String b=new String(a,0,data);
    System.out.println(b);
   }
  } catch (FileNotFoundException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  } catch (IOException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  }
 }
}

2016年2月17日作业

原文：http://www.cnblogs.com/JordanWang/p/5199389.html