Java DataInputStream.readFloat()方法範例

Java DataInputStream.readFloat()方法範例

DataInputStream.readFloat()方法的語法如下所示。

public final float readFloat()   throws IOException

範例

在下面的程式碼顯示如何使用DataInputStream.readFloat()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 {

    float[] fbuf = { 123.345f, 234.567f, 123.123f, 123.123f, 123.123f, 123.345f };// By:  w  w W  . y I  i  ba I  . c  O  M

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

    for (float f : fbuf) {
      dos.writeFloat(f);
    }

    dos.flush();

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

    DataInputStream dis = new DataInputStream(is);

    while (dis.available() > 0) {
      float c = dis.readFloat();
      System.out.print(c + " ");
    }
  }
}