//文件拷贝，以程序为中转站，从一个文件到另一个文件
可处理图片和文本
思路:
type[] flush = new type[1024]
在 .read(flush) ，时已将将内容存储到字节数组，只需再进行写出即可
os.write(flush,0,len)然后刷新缓存，os.flush()

public class test{ private String path; private String path3; private int len; private File first; private File last; private InputStream is; private OutputStream os; public static void main(String[]args) { test t=new test("C:/Users/10853/eclipse-workspace/hell/src/hell/abc","D:/d/last"); t.copy(); } public test(String s,String s2) { this.path=s; this.path3=s2; first=new File(this.path); last=new File(this.path3); try{ is=new FileInputStream(first); os=new FileOutputStream(last); }catch(FileNotFoundException e) { e.printStackTrace(); } } public void copy() { //分段读取 **byte[] flush =new byte[1024];** **try {** **while((len=is.read(flush))!=-1)** ** {** **os.write(flush,0,len); ** **os.flush();** //写出后要刷新 **}*** } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); }finally { try { if(os!=null) { os.close(); } if(is!=null) { is.close(); } }catch(IOException e) { e.printStackTrace(); } }}

}