Java by API/java.io/DataOutputStream — различия между версиями

Материал из Java эксперт
Перейти к: навигация, поиск
м (1 версия)
 
(нет различий)

Текущая версия на 14:32, 31 мая 2010

DataOutputStream: writeBoolean(boolean b)

/*
 * Output:
 */
import java.io.DataOutputStream;
import java.io.FileOutputStream;
public class MainClass {
  public static void main(String args[]) {
    try {
      FileOutputStream fos = new FileOutputStream(args[0]);
      DataOutputStream dos = new DataOutputStream(fos);
      dos.writeBoolean(false);
      dos.writeByte(Byte.MAX_VALUE);
      dos.writeChar("A");
      dos.writeDouble(Double.MAX_VALUE);
      dos.writeFloat(Float.MAX_VALUE);
      dos.writeInt(Integer.MAX_VALUE);
      dos.writeLong(Long.MAX_VALUE);
      dos.writeShort(Short.MAX_VALUE);
      fos.close();
    } catch (Exception e) {
      System.out.println("Exception: " + e);
    }
  }
}





DataOutputStream: writeByte(byte b)

/*
 * Output:
 */
import java.io.DataOutputStream;
import java.io.FileOutputStream;
public class MainClass {
  public static void main(String args[]) {
    try {
      FileOutputStream fos = new FileOutputStream(args[0]);
      DataOutputStream dos = new DataOutputStream(fos);
      dos.writeBoolean(false);
      dos.writeByte(Byte.MAX_VALUE);
      dos.writeChar("A");
      dos.writeDouble(Double.MAX_VALUE);
      dos.writeFloat(Float.MAX_VALUE);
      dos.writeInt(Integer.MAX_VALUE);
      dos.writeLong(Long.MAX_VALUE);
      dos.writeShort(Short.MAX_VALUE);
      fos.close();
    } catch (Exception e) {
      System.out.println("Exception: " + e);
    }
  }
}





DataOutputStream: writeChar(char ch)

/*
 * Output:
 */
import java.io.DataOutputStream;
import java.io.FileOutputStream;
public class MainClass {
  public static void main(String args[]) {
    try {
      FileOutputStream fos = new FileOutputStream(args[0]);
      DataOutputStream dos = new DataOutputStream(fos);
      dos.writeBoolean(false);
      dos.writeByte(Byte.MAX_VALUE);
      dos.writeChar("A");
      dos.writeDouble(Double.MAX_VALUE);
      dos.writeFloat(Float.MAX_VALUE);
      dos.writeInt(Integer.MAX_VALUE);
      dos.writeLong(Long.MAX_VALUE);
      dos.writeShort(Short.MAX_VALUE);
      fos.close();
    } catch (Exception e) {
      System.out.println("Exception: " + e);
    }
  }
}





DataOutputStream: writeDouble(double d)

/*
 * Output:
 */
import java.io.DataOutputStream;
import java.io.FileOutputStream;
public class MainClass {
  public static void main(String args[]) {
    try {
      FileOutputStream fos = new FileOutputStream(args[0]);
      DataOutputStream dos = new DataOutputStream(fos);
      dos.writeBoolean(false);
      dos.writeByte(Byte.MAX_VALUE);
      dos.writeChar("A");
      dos.writeDouble(Double.MAX_VALUE);
      dos.writeFloat(Float.MAX_VALUE);
      dos.writeInt(Integer.MAX_VALUE);
      dos.writeLong(Long.MAX_VALUE);
      dos.writeShort(Short.MAX_VALUE);
      fos.close();
    } catch (Exception e) {
      System.out.println("Exception: " + e);
    }
  }
}





DataOutputStream: writeFloat(float f)

/*
 * Output:
 */
import java.io.DataOutputStream;
import java.io.FileOutputStream;
public class MainClass {
  public static void main(String args[]) {
    try {
      FileOutputStream fos = new FileOutputStream(args[0]);
      DataOutputStream dos = new DataOutputStream(fos);
      dos.writeBoolean(false);
      dos.writeByte(Byte.MAX_VALUE);
      dos.writeChar("A");
      dos.writeDouble(Double.MAX_VALUE);
      dos.writeFloat(Float.MAX_VALUE);
      dos.writeInt(Integer.MAX_VALUE);
      dos.writeLong(Long.MAX_VALUE);
      dos.writeShort(Short.MAX_VALUE);
      fos.close();
    } catch (Exception e) {
      System.out.println("Exception: " + e);
    }
  }
}





DataOutputStream: writeInt(int i)

/*
 * Output:
 */
import java.io.DataOutputStream;
import java.io.FileOutputStream;
public class MainClass {
  public static void main(String args[]) {
    try {
      FileOutputStream fos = new FileOutputStream(args[0]);
      DataOutputStream dos = new DataOutputStream(fos);
      dos.writeBoolean(false);
      dos.writeByte(Byte.MAX_VALUE);
      dos.writeChar("A");
      dos.writeDouble(Double.MAX_VALUE);
      dos.writeFloat(Float.MAX_VALUE);
      dos.writeInt(Integer.MAX_VALUE);
      dos.writeLong(Long.MAX_VALUE);
      dos.writeShort(Short.MAX_VALUE);
      fos.close();
    } catch (Exception e) {
      System.out.println("Exception: " + e);
    }
  }
}





DataOutputStream: writeLong(long l)

/*
 * Output:
 */
import java.io.DataOutputStream;
import java.io.FileOutputStream;
public class MainClass {
  public static void main(String args[]) {
    try {
      FileOutputStream fos = new FileOutputStream(args[0]);
      DataOutputStream dos = new DataOutputStream(fos);
      dos.writeBoolean(false);
      dos.writeByte(Byte.MAX_VALUE);
      dos.writeChar("A");
      dos.writeDouble(Double.MAX_VALUE);
      dos.writeFloat(Float.MAX_VALUE);
      dos.writeInt(Integer.MAX_VALUE);
      dos.writeLong(Long.MAX_VALUE);
      dos.writeShort(Short.MAX_VALUE);
      fos.close();
    } catch (Exception e) {
      System.out.println("Exception: " + e);
    }
  }
}





DataOutputStream: writeShort(int i)

/*
 * Output:
 */
import java.io.DataOutputStream;
import java.io.FileOutputStream;
public class MainClass {
  public static void main(String args[]) {
    try {
      FileOutputStream fos = new FileOutputStream(args[0]);
      DataOutputStream dos = new DataOutputStream(fos);
      dos.writeBoolean(false);
      dos.writeByte(Byte.MAX_VALUE);
      dos.writeChar("A");
      dos.writeDouble(Double.MAX_VALUE);
      dos.writeFloat(Float.MAX_VALUE);
      dos.writeInt(Integer.MAX_VALUE);
      dos.writeLong(Long.MAX_VALUE);
      dos.writeShort(Short.MAX_VALUE);
      fos.close();
    } catch (Exception e) {
      System.out.println("Exception: " + e);
    }
  }
}





DataOutputStream: writeUTF(String str)

import java.io.BufferedReader;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.Socket;
public class MainClass extends Thread {
  public MainClass() throws IOException {
  }
  public void run() {
    try {
      Socket socket = new Socket("127.0.0.1", 2000);
      DataInputStream in = new DataInputStream(socket.getInputStream());
      BufferedReader console = new BufferedReader(new InputStreamReader(System.in));
      DataOutputStream out = new DataOutputStream(socket.getOutputStream());
      while (true) {
        System.out.print("Enter response: ");
        String response = console.readLine();
        out.writeUTF(response);
        String message = in.readUTF();
        System.out.println(message);
      }
    } catch (IOException e) {
      e.printStackTrace();
    }
  }
  public static void main(String[] args) {
    try {
      Thread t = new MainClass();
      t.start();
    } catch (IOException e) {
      e.printStackTrace();
    }
  }
}





new DataOutputStream(FileOutputStream fileOutputStream)

/*
 * Output:
 */
import java.io.DataOutputStream;
import java.io.FileOutputStream;
public class MainClass {
  public static void main(String args[]) {
    try {
      FileOutputStream fos = new FileOutputStream(args[0]);
      DataOutputStream dos = new DataOutputStream(fos);
      dos.writeBoolean(false);
      dos.writeByte(Byte.MAX_VALUE);
      dos.writeChar("A");
      dos.writeDouble(Double.MAX_VALUE);
      dos.writeFloat(Float.MAX_VALUE);
      dos.writeInt(Integer.MAX_VALUE);
      dos.writeLong(Long.MAX_VALUE);
      dos.writeShort(Short.MAX_VALUE);
      fos.close();
    } catch (Exception e) {
      System.out.println("Exception: " + e);
    }
  }
}


Источник — «http://jexp.ru/index.php?title=Java_by_API/java.io/DataOutputStream&oldid=1338»