в 17:43, 31 мая 2010

2010-05-31T17:43:48Z

Admin: 1 версия

2010-05-31T14:32:11Z

1 версия

Новая страница

== FileOutputStream: getChannel() ==



<source lang="java">

import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.nio.ByteBuffer;
import java.nio.channels.FileChannel;
public class Main {
private static final int BSIZE = 1024;
public static void main(String[] args) throws Exception {
FileChannel in = new FileInputStream("source.txt").getChannel(), out = new FileOutputStream(
"target.txt").getChannel();
ByteBuffer buffer = ByteBuffer.allocate(BSIZE);
while (in.read(buffer) != -1) {
buffer.flip();
out.write(buffer);
buffer.clear();
}
}
}

</source>



== FileOutputStream: getFD() ==



<source lang="java">

import java.io.FileDescriptor;
import java.io.FileOutputStream;
public class Main {
public static void main(String[] argv) throws Exception {
FileOutputStream os = new FileOutputStream("outfilename");
FileDescriptor fd = os.getFD();
os.write(1);
os.flush();
fd.sync();
}
}

</source>



== FileOutputStream: write(int b) ==



<source lang="java">

import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.zip.InflaterInputStream;
public class Main {
public static void main(String[] args) {
for (int i = 0; i < args.length; i++) {
if (args[i].toLowerCase().endsWith(".dfl")) {
try {
FileInputStream fin = new FileInputStream(args[i]);
InflaterInputStream iis = new InflaterInputStream(fin);
FileOutputStream fout = new FileOutputStream(args[i].substring(0, args[i].length() - 4));
for (int c = iis.read(); c != -1; c = iis.read()) {
fout.write(c);
}
fout.close();
} catch (IOException ex) {
System.err.println(ex);
}
} else {
System.err.println(args[i] + " does not appear to be a deflated file.");
}
}
}
}

</source>



== new FileOutputStream(File file) ==



<source lang="java">

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.PrintStream;
public class MainClass {
public static void main(String[] args) {
try {
File tempFile = File.createTempFile("myfile", ".tmp");
FileOutputStream fout = new FileOutputStream(tempFile);
PrintStream out = new PrintStream(fout);
out.println("some text");
} catch (IOException ex) {
System.out.println("There was a problem creating/writing to the temp file");
ex.printStackTrace();
}
}
}

</source>



== new FileOutputStream(String name) ==



<source lang="java">

/*
* Output:
*
*
*
*
*/
import java.io.*;
public class MainClass {

public static void main(String args[]) throws Exception {
byte buf[] = new byte[]{66,67,68,69};
OutputStream f0 = new FileOutputStream("file1.txt");
OutputStream f1 = new FileOutputStream("file2.txt");
OutputStream f2 = new FileOutputStream("file3.txt");
for (int i = 0; i < buf.length; i++) {
f0.write(buf[i]);
}
f0.close();
f1.write(buf);
f1.close();
f2.write(buf, buf.length / 4, buf.length / 2);
f2.close();
}
}

</source>

← Предыдущая	Версия 17:43, 31 мая 2010
(нет различий)

Java by API/java.io/FileOutputStream - История изменений

в 17:43, 31 мая 2010

Admin: 1 версия