import java.io.*;
class DataInOut{
  public static void main(String args[])
    throws IOException {
	//創建DataOutputStream對象，并向文件中寫入數據。
    FileOutputStream fout = new FileOutputStream("test11_4.txt");
    DataOutputStream Dataout = new DataOutputStream(fout);
    Dataout.writeDouble(38.79);
    Dataout.writeInt(200);
    Dataout.writeBoolean(true);
    Dataout.close();
	//創建DataInputStream對象，從文件中讀取數據并輸出。
    FileInputStream fin = new FileInputStream("test11_4.txt");
    DataInputStream Datain = new DataInputStream(fin);
    double d = Datain.readDouble();
    int i = Datain.readInt();
    boolean b = Datain.readBoolean();
    System.out.println("Input Number are :  " +
                       d + " " + i + " " + b);
    Datain.close();
  }
}