java的IO流复制文件和读取文件内容

//复制文件  
File file = new File("D:\\ab.exe");
byte[] b = new byte[1024];
int len = 0;
FileInputStream fis = new FileInputStream(file);
FileOutputStream fos = new FileOutputStream("d:\\copy.exe");
while((len = fis.read(b))!=-1){
fos.write(b, 0, len);
}
fis.close();
fos.close();

*/

//字符流读法

BufferedReader read=null;
File file = new File("D:\\gobal_result.txt");
InputStreamReader isr = new InputStreamReader(new FileInputStream(file), "UTF-8");
read=new BufferedReader(isr);
// System.out.println(read);
String tempString = null;
while((tempString=read.readLine())!=null){
System.out.println(tempString);
}
read.close();