Java by API/java.io/DataInputStream — различия между версиями
Admin (обсуждение | вклад) м (1 версия) |
Admin (обсуждение | вклад) м (1 версия) |
(нет различий)
| |
Текущая версия на 14:32, 31 мая 2010
Содержание
- 1 DataInputStream: readBoolean()
- 2 DataInputStream: readByte()
- 3 DataInputStream: readChar()
- 4 DataInputStream: readDouble()
- 5 DataInputStream: readFloat()
- 6 DataInputStream: readInt()
- 7 DataInputStream: readLong()
- 8 DataInputStream: readShort()
- 9 DataInputStream: readUnsignedShort()
- 10 DataInputStream: readUTF()
- 11 new DataInputStream(FileInputStream fileInputStream)
- 12 new DataInputStream(new BufferedInputStream(new FileInputStream("temp.tmp")))
DataInputStream: readBoolean()
/*
* Output:
*/
import java.io.DataInputStream;
import java.io.FileInputStream;
public class MainClass {
public static void main(String args[]) {
try {
FileInputStream fis = new FileInputStream("fileName.dat");
// Create a data input stream
DataInputStream dis = new DataInputStream(fis);
// Read and display data
System.out.println(dis.readBoolean());
System.out.println(dis.readByte());
System.out.println(dis.readChar());
System.out.println(dis.readDouble());
System.out.println(dis.readFloat());
System.out.println(dis.readInt());
System.out.println(dis.readLong());
System.out.println(dis.readShort());
// Close file input stream
fis.close();
} catch (Exception e) {
System.out.println("Exception: " + e);
}
}
}
DataInputStream: readByte()
/*
* Output:
*/
import java.io.DataInputStream;
import java.io.FileInputStream;
public class MainClass {
public static void main(String args[]) {
try {
FileInputStream fis = new FileInputStream("fileName.dat");
// Create a data input stream
DataInputStream dis = new DataInputStream(fis);
// Read and display data
System.out.println(dis.readBoolean());
System.out.println(dis.readByte());
System.out.println(dis.readChar());
System.out.println(dis.readDouble());
System.out.println(dis.readFloat());
System.out.println(dis.readInt());
System.out.println(dis.readLong());
System.out.println(dis.readShort());
// Close file input stream
fis.close();
} catch (Exception e) {
System.out.println("Exception: " + e);
}
}
}
DataInputStream: readChar()
/*
* Output:
*/
import java.io.DataInputStream;
import java.io.FileInputStream;
public class MainClass {
public static void main(String args[]) {
try {
FileInputStream fis = new FileInputStream("fileName.dat");
// Create a data input stream
DataInputStream dis = new DataInputStream(fis);
// Read and display data
System.out.println(dis.readBoolean());
System.out.println(dis.readByte());
System.out.println(dis.readChar());
System.out.println(dis.readDouble());
System.out.println(dis.readFloat());
System.out.println(dis.readInt());
System.out.println(dis.readLong());
System.out.println(dis.readShort());
// Close file input stream
fis.close();
} catch (Exception e) {
System.out.println("Exception: " + e);
}
}
}
DataInputStream: readDouble()
/*
* Output:
*/
import java.io.DataInputStream;
import java.io.FileInputStream;
public class MainClass {
public static void main(String args[]) {
try {
FileInputStream fis = new FileInputStream("fileName.dat");
// Create a data input stream
DataInputStream dis = new DataInputStream(fis);
// Read and display data
System.out.println(dis.readBoolean());
System.out.println(dis.readByte());
System.out.println(dis.readChar());
System.out.println(dis.readDouble());
System.out.println(dis.readFloat());
System.out.println(dis.readInt());
System.out.println(dis.readLong());
System.out.println(dis.readShort());
// Close file input stream
fis.close();
} catch (Exception e) {
System.out.println("Exception: " + e);
}
}
}
DataInputStream: readFloat()
/*
* Output:
*/
import java.io.DataInputStream;
import java.io.FileInputStream;
public class MainClass {
public static void main(String args[]) {
try {
FileInputStream fis = new FileInputStream("fileName.dat");
// Create a data input stream
DataInputStream dis = new DataInputStream(fis);
// Read and display data
System.out.println(dis.readBoolean());
System.out.println(dis.readByte());
System.out.println(dis.readChar());
System.out.println(dis.readDouble());
System.out.println(dis.readFloat());
System.out.println(dis.readInt());
System.out.println(dis.readLong());
System.out.println(dis.readShort());
// Close file input stream
fis.close();
} catch (Exception e) {
System.out.println("Exception: " + e);
}
}
}
DataInputStream: readInt()
/*
* Output:
*/
import java.io.DataInputStream;
import java.io.FileInputStream;
public class MainClass {
public static void main(String args[]) {
try {
FileInputStream fis = new FileInputStream("fileName.dat");
// Create a data input stream
DataInputStream dis = new DataInputStream(fis);
// Read and display data
System.out.println(dis.readBoolean());
System.out.println(dis.readByte());
System.out.println(dis.readChar());
System.out.println(dis.readDouble());
System.out.println(dis.readFloat());
System.out.println(dis.readInt());
System.out.println(dis.readLong());
System.out.println(dis.readShort());
// Close file input stream
fis.close();
} catch (Exception e) {
System.out.println("Exception: " + e);
}
}
}
DataInputStream: readLong()
/*
* Output:
*/
import java.io.DataInputStream;
import java.io.FileInputStream;
public class MainClass {
public static void main(String args[]) {
try {
FileInputStream fis = new FileInputStream("fileName.dat");
// Create a data input stream
DataInputStream dis = new DataInputStream(fis);
// Read and display data
System.out.println(dis.readBoolean());
System.out.println(dis.readByte());
System.out.println(dis.readChar());
System.out.println(dis.readDouble());
System.out.println(dis.readFloat());
System.out.println(dis.readInt());
System.out.println(dis.readLong());
System.out.println(dis.readShort());
// Close file input stream
fis.close();
} catch (Exception e) {
System.out.println("Exception: " + e);
}
}
}
DataInputStream: readShort()
/*
* Output:
*/
import java.io.DataInputStream;
import java.io.FileInputStream;
public class MainClass {
public static void main(String args[]) {
try {
FileInputStream fis = new FileInputStream("fileName.dat");
// Create a data input stream
DataInputStream dis = new DataInputStream(fis);
// Read and display data
System.out.println(dis.readBoolean());
System.out.println(dis.readByte());
System.out.println(dis.readChar());
System.out.println(dis.readDouble());
System.out.println(dis.readFloat());
System.out.println(dis.readInt());
System.out.println(dis.readLong());
System.out.println(dis.readShort());
// Close file input stream
fis.close();
} catch (Exception e) {
System.out.println("Exception: " + e);
}
}
}
DataInputStream: readUnsignedShort()
import java.io.DataInputStream;
import java.io.FileInputStream;
import java.io.IOException;
public class Main {
public static void main(String[] args) throws IOException {
DataInputStream in = new DataInputStream(new FileInputStream("Main.class"));
int start = in.readInt();
if (start != 0xcafebabe) {
System.out.println("not valid");
}
in.close();
System.out.println(in.readUnsignedShort()+"/"+in.readUnsignedShort());
}
}
DataInputStream: readUTF()
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.Socket;
public class MainClass {
public static void main(String[] args) throws Exception {
String serverName = args[0];
int port = Integer.parseInt(args[1]);
try {
System.out.println("Connecting to " + serverName + " on port " + port);
Socket client = new Socket(serverName, port);
System.out.println("Just connected to " + client.getRemoteSocketAddress());
OutputStream outToServer = client.getOutputStream();
DataOutputStream out = new DataOutputStream(outToServer);
out.writeUTF("Hello from " + client.getLocalSocketAddress());
InputStream inFromServer = client.getInputStream();
DataInputStream in = new DataInputStream(inFromServer);
System.out.println("Server says " + in.readUTF());
client.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
new DataInputStream(FileInputStream fileInputStream)
/*
* Output:
*/
import java.io.DataInputStream;
import java.io.FileInputStream;
public class MainClass {
public static void main(String args[]) {
try {
FileInputStream fis = new FileInputStream("fileName.dat");
// Create a data input stream
DataInputStream dis = new DataInputStream(fis);
// Read and display data
System.out.println(dis.readBoolean());
System.out.println(dis.readByte());
System.out.println(dis.readChar());
System.out.println(dis.readDouble());
System.out.println(dis.readFloat());
System.out.println(dis.readInt());
System.out.println(dis.readLong());
System.out.println(dis.readShort());
// Close file input stream
fis.close();
} catch (Exception e) {
System.out.println("Exception: " + e);
}
}
}
new DataInputStream(new BufferedInputStream(new FileInputStream("temp.tmp")))
import java.io.BufferedInputStream;
import java.io.DataInputStream;
import java.io.FileInputStream;
import java.io.IOException;
public class Main {
public static void main(String[] args) throws IOException {
DataInputStream dis = new DataInputStream(new BufferedInputStream(new FileInputStream(
"temp.tmp")));
for (int i = 0; i < 10; i++)
dis.readInt();
dis.close();
}
}
