Admin: 1 версия

2010-06-01T06:05:08Z

1 версия

в 18:01, 31 мая 2010

2010-05-31T18:01:43Z

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== Create a compressed data file by using a DeflaterOutputStream and then read that data through an InflaterInputStream. ==



<source lang="java">

import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.util.zip.DeflaterOutputStream;
import java.util.zip.InflaterInputStream;
public class Main {
public static void main(String[] argv) throws Exception {
double data[] = { 1.1, 2.2, 3.3, 4.4, 5.5, 6.6 };
DataOutputStream fout = new DataOutputStream(new DeflaterOutputStream(new FileOutputStream(
"data.dat")));
fout.writeInt(data.length);
for (double d : data)
fout.writeDouble(d);
DataInputStream fin = new DataInputStream(new InflaterInputStream(new FileInputStream(
"data.dat")));
int num = fin.readInt();
double avg = 0.0;
double d;
for (int i = 0; i < num; i++) {
d = fin.readDouble();
avg += d;
System.out.print(d + " ");
}
fin.close();
fout.close();
}
}

</source>



== Use DeflaterOutputStream to zip ==



<source lang="java">

import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.util.zip.DeflaterOutputStream;
public class FileDeflater {
public static void main(String[] args) throws Exception {
FileInputStream fin = new FileInputStream("a.dat");
FileOutputStream fout = new FileOutputStream("b.dat");
DeflaterOutputStream dos = new DeflaterOutputStream(fout);
for (int c = fin.read(); c != -1; c = fin.read()) {
dos.write(c);
}
dos.close();
fin.close();
}
}

</source>

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Java/File Input Output/DeflaterOutputStream - История изменений

Admin: 1 версия

в 18:01, 31 мая 2010