拷贝文件的源代码

//-----------Class CopyFile Begin---------
//Class CopyFile
//CopyRight:Writed By Yun-Fengsheng
//Last modify time:2001-11-16
//Method: public boolean copy(String from_filename,String to_filename)
class CopyFile
{
        public boolean copy(String file1,String file2)
        {
                try //must try and catch,otherwide will compile error
            {
                //instance the File as file_in and file_out
                java.io.File file_in=new java.io.File(file1);
                java.io.File file_out=new java.io.File(file2);
                FileInputStream in1=new FileInputStream(file_in);
        FileOutputStream out1=new FileOutputStream(file_out);
                byte[] bytes=new byte[1024];
                int c;
                while((c=in1.read(bytes))!=-1)
                        out1.write(bytes,0,c);
                in1.close();
                out1.close();
                return(true);  //if success then return true
        }

           catch(Exception e)
       {  
           System.out.println("Error!");
           return(false);  //if fail then return false
       }
        }
}

//Class CopyFile Example
/*
CopyFile copy1=new CopyFile();
boolean copy_ok=copy1.copy("c:/hello.jsp","c:/hello_backup.jsp");
if(copy_ok)
{
        out.println("拷贝成功！");
}
else
{
        out.println("拷贝失败！");
}
*/
//-----------Class CopyFile End-----------