Java例程练习（字节流）

import java.io.*;

public class Test {
public static void main(String[] args) {
int b = 0;
FileInputStream in = null;

try {

in = new FileInputStream("C:/java/Test.java");

} catch (FileNotFoundException e) {
System.out.println("找不到指定文件");
System.exit(-1);
}

try {

long num = 0;
while((b = in.read()) != -1) {
System.out.print((char)b);
num ++;
}

in.close();
System.out.println();
System.out.println("共读取了" + num + " 个字节");

} catch (IOException e) {
System.out.println("文件读取错误");
System.exit(-1);
}


}
}
[java]

import java.io.*; 
  
 public class Test { 
     public static void main(String[] args) { 
         int b = 0; 
         FileInputStream in = null; 
         FileOutputStream out = null; 
          
         try { 
             in = new FileInputStream("C:/java/Test.java"); 
             out = new FileOutputStream("C:/java/A/HW.java"); 
  
             while((b = in.read()) != -1) { 
                 out.write(b); 
                  
             } 
              
             in.close(); 
             out.close(); 
         } catch (FileNotFoundException e) { 
             System.out.println("找不到指定文件"); 
             System.exit(-1); 
         } catch (IOException e) { 
             System.out.println("文件复制错误"); 
             System.exit(-1); 
         } 
          
         System.out.println("文件已复制"); 
          
     } 
 } 
 
 
 





 
 

 摘自 Yours风之恋