Java IO——DataOutputStream & DataInputStream

String file="H:\\Lhc\\diary.txt";
DataOutputStream dos=new DataOutputStream(new FileOutputStream(file));
dos.writeInt(10);
dos.writeInt(-10);
dos.writeLong(10l);
dos.writeDouble(10.3);
dos.writeUTF("水田"); //utf-8写出
dos.writeChars("水田奈落");//采用utf-16be编码写出
dos.close();
IOUtil.printHex(file);

String file="H:\\Lhc\\diary.txt";
IOUtil.printHex(file);
DataInputStream dis=new DataInputStream(new FileInputStream(file));
int i=dis.readInt();
System.out.println(i);