package?com.imooc.io;
import?java.io.DataOutputStream;
import?java.io.FileOutputStream;
import?java.io.IOException;
public?class?DosDemo?{
?public?static?void?main(String[]?args)throws?IOException?{
??
??String?file="demo/dos.dat";
??DataOutputStream?dos=
????new?DataOutputStream(new?FileOutputStream(file));
??dos.writeInt(10);
??dos.writeInt(-10);
??dos.writeLong(10l);
??dos.writeDouble(10.5);
??//采用utf-8編碼寫出
??dos.writeUTF("中國");
??dos.writeChars("中國");
??dos.close();
??IOUtil.printHex(file);
?}
}
2017-07-20
printHex你這個方法是否寫了輸出時換行