Mega Code Archive
Readonly RandomAccessFile
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/*
* Copyright (c) 1995 - 2008 Sun Microsystems, Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* - Neither the name of Sun Microsystems nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
import java.io.FileNotFoundException;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;
import java.io.RandomAccessFile;
import java.util.Vector;
public class ListOfNumbers2 {
private Vector<Integer> victor;
private static final int SIZE = 10;
public ListOfNumbers2() {
victor = new Vector<Integer>(SIZE);
for (int i = 0; i < SIZE; i++)
victor.addElement(new Integer(i));
this.readList("infile.txt");
this.writeList();
}
public void readList(String fileName) {
String line = null;
try {
RandomAccessFile raf = new RandomAccessFile(fileName, "r");
while ((line = raf.readLine()) != null) {
Integer i = new Integer(Integer.parseInt(line));
System.out.println(i);
victor.addElement(i);
}
} catch (FileNotFoundException fnf) {
System.err.println("File: " + fileName + " not found.");
} catch (IOException io) {
System.err.println(io.toString());
}
}
public void writeList() {
PrintWriter out = null;
try {
out = new PrintWriter(new FileWriter("outfile.txt"));
for (int i = 0; i < victor.size(); i++)
out.println("Value at: " + i + " = " + victor.elementAt(i));
} catch (ArrayIndexOutOfBoundsException e) {
System.err.println("Caught ArrayIndexOutOfBoundsException: "
+ e.getMessage());
} catch (IOException e) {
System.err.println("Caught IOException: " + e.getMessage());
} finally {
if (out != null) {
System.out.println("Closing PrintWriter");
out.close();
} else {
System.out.println("PrintWriter not open");
}
}
}
public static void main(String[] args) {
new ListOfNumbers2();
}
}
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