Input and output of primitive values with binary files


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

public class InputOutputDemoBinaryFile {

  public static void main(String[] a) throws Exception {

    //Write primitive values to a binary file "java2s.dat":
    DataOutputStream dos = new DataOutputStream(new FileOutputStream(
        "java2s.dat"));
    dos.writeInt(228);
    dos.writeChar(' ');
    dos.writeUTF("Java Source and Support at www.java2s.com");
    dos.close();
    //Read primitive values from binary file "java2s.dat":
    DataInputStream dis = new DataInputStream(new FileInputStream(
        "java2s.dat"));
    System.out.println(dis.readInt() + "|" + dis.readChar() + "|"
        + dis.readUTF());
  }
}

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Input and output of primitive values with binary files : Input Output Stream « File Input Output « Java

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