复制文件FileStreamDemo.java的内容至文件file.txt文件,并显示输出 file.txt文件内容
package sky;import java.io.*;
public class FileStreamDemo...{
public static void main(String[] args)...{ try...{
byte[] buffer=new byte[1024]; //源文件 FileInputStream fis=new FileInputStream(new File("FileStreamDemo.java")); //目的文件 FileOutputStream fos=new FileOutputStream(new File("file.txt")); System.out.println("复制文件: "+fis.available()+"字节"); while(true)...{ //复制小于1024的数据 if(fis.available()<1024)...{ int remain=-1; while((remain=fis.read())!=-1)...{ fos.write(remain);
} break; } //复制大于1024的数据 else...{ fis.read(buffer); fos.write(buffer); } } fis.close(); fos.close(); System.out.println("复制完成"); }catch(ArrayIndexOutOfBoundsException e)...{ System.out.println("using: java FileSreamDemo src des"); e.printStackTrace(); }catch(IOException e)...{ e.printStackTrace(); } //输出file.txt文件的内容 System.out.println("***********************"); System.out.println("输出file.txt文件内容"); try...{ FileInputStream fs=new FileInputStream(new File("file.txt")); byte[] buf=new byte[fs.available()]; fs.read(buf); String str=new String(buf); System.out.println(str); }catch(ArrayIndexOutOfBoundsException e)...{ System.out.println("using: java FileSreamDemo src des"); e.printStackTrace(); }catch(IOException e)...{ e.printStackTrace(); } System.out.println(); }
}