ExtendedRandom.java revision d81978a0815d5b8a75633c35e3e1f8708d36f017
// CDDL HEADER START
//
// The contents of this file are subject to the terms of the
// Common Development and Distribution License, Version 1.0 only
// (the "License"). You may not use this file except in compliance
// with the License.
//
// You can obtain a copy of the license at
// trunk/opends/resource/legal-notices/OpenDS.LICENSE
// or https://OpenDS.dev.java.net/OpenDS.LICENSE.
// See the License for the specific language governing permissions
// and limitations under the License.
//
// When distributing Covered Code, include this CDDL HEADER in each
// file and include the License file at
// trunk/opends/resource/legal-notices/OpenDS.LICENSE. If applicable,
// add the following below this CDDL HEADER, with the fields enclosed
// information:
// Portions Copyright [yyyy] [name of copyright owner]
//
// CDDL HEADER END
//
//
// Copyright 2008 Sun Microsystems, Inc.
import java.util.*;
import java.io.*;
public class ExtendedRandom extends Random {
ArrayList<String> lastNames;
ArrayList<String> firstNames;
/*****************************************************************/
public ExtendedRandom() {
super();
this.init();
}
/*****************************************************************/
public ExtendedRandom(long seed) {
super(seed);
this.init();
}
/*****************************************************************/
public void init() {
lastNames=new ArrayList<String>();
firstNames=new ArrayList<String>();
try {
File lastNamesFile= new File("data", "last.names");
File firstNamesFile= new File("data", "first.names");
LineNumberReader in=new LineNumberReader (new FileReader(lastNamesFile) );
while ( in.ready() ) {
String lastName = in.readLine();
if ( ! lastName.startsWith("#") ) {
lastNames.add(lastName);
}
}
in=new LineNumberReader (new FileReader(firstNamesFile) );
while ( in.ready() ) {
String firstName = in.readLine();
if ( ! firstName.startsWith("#") ) {
firstNames.add(firstName);
}
}
} catch (IOException e) {
System.out.println (e.toString());
System.exit(1);
}
}
/*****************************************************************/
public int nextInt(int lo, int hi)
{
int n = hi - lo + 1;
int i = this.nextInt() % n;
if (i < 0)
i = -i;
return lo + i;
}
/*****************************************************************/
public String nextDate() {
return( nextInt(1950,2006) + "-" + nextInt(1,12) + "-" + nextInt(1,12) );
}
/*****************************************************************/
public String nextString (int lo, int hi)
{
int n = nextInt(lo, hi);
byte b[] = new byte[n];
for (int i = 0; i < n; i++)
b[i] = (byte)nextInt('a', 'z');
return new String(b, 0);
}
/*****************************************************************/
public String nextString()
{
return nextString(5, 25);
}
/*****************************************************************/
public String nextName()
{
int n = nextInt(5, 20);
// first capital letter
byte b[] = new byte[n];
b[0] = (byte)nextInt('A', 'Z');
for (int i = 1; i < n; i++)
b[i] = (byte)nextInt('a', 'z');
return new String(b, 0);
}
/*****************************************************************/
public String nextLastName(){
int i=this.nextInt( 0, lastNames.size()-1 );
return ( lastNames.get(i) );
}
/*****************************************************************/
public String nextFirstName(){
int i=this.nextInt( 0, firstNames.size()-1 );
return ( firstNames.get(i) );
}
/*****************************************************************/
public static void main(String[] args)
{
ExtendedRandom r = new ExtendedRandom();
System.out.println(r.nextLastName());
}
}