в 17:43, 31 мая 2010

2010-05-31T17:43:48Z

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2010-05-31T14:32:29Z

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== ByteArrayOutputStream: toByteArray() ==



<source lang="java">

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
public class Main {
public static void main(String args[]) throws IOException {
ByteArrayOutputStream outStream = new ByteArrayOutputStream();
String s = "This is a test.";
for (int i = 0; i < s.length(); ++i)
outStream.write(s.charAt(i));
System.out.println("outstream: " + outStream);
System.out.println("size: " + outStream.size());
ByteArrayInputStream inStream = new ByteArrayInputStream(outStream.toByteArray());
int inBytes = inStream.available();
System.out.println("inStream has " + inBytes + " available bytes");
byte inBuf[] = new byte[inBytes];
int bytesRead = inStream.read(inBuf, 0, inBytes);
System.out.println(bytesRead + " bytes were read");
System.out.println("They are: " + new String(inBuf));
}
}

</source>



== ByteArrayOutputStream: writeTo(OutputStream out) ==



<source lang="java">

import java.io.ByteArrayOutputStream;
import java.io.DataOutputStream;
import java.io.FileOutputStream;
import java.io.IOException;
public class Main {
public static void main(String args[]) throws IOException {
int howMany = 20;
// To avoid resizing the buffer, calculate the size of the
// byte array in advance.
ByteArrayOutputStream bout = new ByteArrayOutputStream(howMany * 4);
DataOutputStream dout = new DataOutputStream(bout);
for (int i = 0; i <= 20; i++) {
dout.writeInt(i);
}
FileOutputStream fout = new FileOutputStream("fibonacci.dat");
try {
bout.writeTo(fout);
fout.flush();
} finally {
fout.close();
}
}
}

</source>



== new ByteArrayOutputStream(int size) ==



<source lang="java">

/*
* Output:
*
*/
import java.io.ByteArrayOutputStream;
import java.io.FileOutputStream;
import java.io.OutputStream;
public class MainClass {
public static void main(String args[]) throws Exception {
ByteArrayOutputStream f = new ByteArrayOutputStream(12);
System.out.println("Please 10 characters and a return");
while (f.size() != 10) {
f.write(System.in.read());
}
System.out.println("Buffer as a string");
System.out.println(f.toString());
System.out.println("Into array");
byte b[] = f.toByteArray();
for (int i = 0; i < b.length; i++) {
System.out.print((char) b[i]);
}
System.out.println();
OutputStream f2 = new FileOutputStream("test.txt");
f.writeTo(f2);
f.reset();
System.out.println("10 characters and a return");
while (f.size() != 10) {
f.write(System.in.read());
}
System.out.println("Done..");
}
}

</source>

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