Java DataOutputStream.writeDouble(double v)型別

DataOutputStream.writeDouble(double v)方法範例

DataOutputStream的DataOutputStream.writeDouble(double v)方法具有以下語法。

public final void writeDouble(double v)   throws IOException

範例

在下面的程式碼中展示了如何使用DataOutputStream.writeDouble(double v)方法。

import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;

public class Main {
  public static void main(String[] args) throws IOException {
    double[] dbuf = { 12.34, 34.45, 67.78, 88.88, 66.66, 77.33 };

    FileOutputStream fos = new FileOutputStream("c:\\test.txt");
    DataOutputStream dos = new DataOutputStream(fos);

    for (double d : dbuf) {
      dos.writeDouble(d);
    }
    dos.flush();// At:  ｗWW  . y I ibai . C O   M

    InputStream is = new FileInputStream("c:\\test.txt");
    DataInputStream dis = new DataInputStream(is);

    while (dis.available() > 0) {
      double c = dis.readDouble();
      System.out.print(c);
    }
  }
}