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Commitb423002

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updated Random() to SecureRandom() (iluwatar#1670)
* updated Random() to SecureRandom()* batch 2 of SecureRandom updates
1 parentc150871 commitb423002

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15 files changed

+32
-31
lines changed

15 files changed

+32
-31
lines changed

‎commander/src/main/java/com/iluwatar/commander/Order.java

Lines changed: 2 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -23,8 +23,8 @@
2323

2424
packagecom.iluwatar.commander;
2525

26+
importjava.security.SecureRandom;
2627
importjava.util.Hashtable;
27-
importjava.util.Random;
2828

2929
/**
3030
* Order class holds details of the order.
@@ -45,7 +45,7 @@ enum MessageSent {
4545
publicfinalStringid;
4646
finalfloatprice;
4747
finallongcreatedTime;
48-
privatestaticfinalRandomRANDOM =newRandom();
48+
privatestaticfinalSecureRandomRANDOM =newSecureRandom();
4949
privatestaticfinalStringALL_CHARS ="ABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890";
5050
privatestaticfinalHashtable<String,Boolean>USED_IDS =newHashtable<String,Boolean>();
5151
PaymentStatuspaid;

‎commander/src/main/java/com/iluwatar/commander/Retry.java

Lines changed: 2 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -23,10 +23,10 @@
2323

2424
packagecom.iluwatar.commander;
2525

26+
importjava.security.SecureRandom;
2627
importjava.util.ArrayList;
2728
importjava.util.Arrays;
2829
importjava.util.List;
29-
importjava.util.Random;
3030
importjava.util.concurrent.atomic.AtomicInteger;
3131
importjava.util.function.Predicate;
3232

@@ -56,7 +56,7 @@ public interface HandleErrorIssue<T> {
5656
voidhandleIssue(Tobj,Exceptione);
5757
}
5858

59-
privatestaticfinalRandomRANDOM =newRandom();
59+
privatestaticfinalSecureRandomRANDOM =newSecureRandom();
6060

6161
privatefinalOperationop;
6262
privatefinalHandleErrorIssue<T>handleError;

‎commander/src/main/java/com/iluwatar/commander/Service.java

Lines changed: 3 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -24,10 +24,11 @@
2424
packagecom.iluwatar.commander;
2525

2626
importcom.iluwatar.commander.exceptions.DatabaseUnavailableException;
27+
28+
importjava.security.SecureRandom;
2729
importjava.util.ArrayList;
2830
importjava.util.Hashtable;
2931
importjava.util.List;
30-
importjava.util.Random;
3132

3233
/**
3334
* Service class is an abstract class extended by all services in this example. They all have a
@@ -42,7 +43,7 @@ public abstract class Service {
4243

4344
protectedfinalDatabasedatabase;
4445
publicArrayList<Exception>exceptionsList;
45-
privatestaticfinalRandomRANDOM =newRandom();
46+
privatestaticfinalSecureRandomRANDOM =newSecureRandom();
4647
privatestaticfinalStringALL_CHARS ="ABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890";
4748
privatestaticfinalHashtable<String,Boolean>USED_IDS =newHashtable<>();
4849

‎event-asynchronous/src/main/java/com/iluwatar/event/asynchronous/EventManager.java

Lines changed: 3 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -23,8 +23,8 @@
2323

2424
packagecom.iluwatar.event.asynchronous;
2525

26+
importjava.security.SecureRandom;
2627
importjava.util.Map;
27-
importjava.util.Random;
2828
importjava.util.concurrent.ConcurrentHashMap;
2929

3030
/**
@@ -43,7 +43,7 @@ public class EventManager implements ThreadCompleteListener {
4343
publicstaticfinalintMAX_ID =MAX_RUNNING_EVENTS;
4444
publicstaticfinalintMAX_EVENT_TIME =1800;// in seconds / 30 minutes.
4545
privateintcurrentlyRunningSyncEvent = -1;
46-
privatefinalRandomrand;
46+
privatefinalSecureRandomrand;
4747
privatefinalMap<Integer,Event>eventPool;
4848

4949
privatestaticfinalStringDOES_NOT_EXIST =" does not exist.";
@@ -52,7 +52,7 @@ public class EventManager implements ThreadCompleteListener {
5252
* EventManager constructor.
5353
*/
5454
publicEventManager() {
55-
rand =newRandom(1);
55+
rand =newSecureRandom();
5656
eventPool =newConcurrentHashMap<Integer,Event>(MAX_RUNNING_EVENTS);
5757

5858
}

‎game-loop/src/main/java/com/iluwatar/gameloop/GameLoop.java

Lines changed: 2 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -23,7 +23,7 @@
2323

2424
packagecom.iluwatar.gameloop;
2525

26-
importjava.util.Random;
26+
importjava.security.SecureRandom;
2727
importorg.slf4j.Logger;
2828
importorg.slf4j.LoggerFactory;
2929

@@ -80,7 +80,7 @@ public boolean isGameRunning() {
8080
*/
8181
protectedvoidprocessInput() {
8282
try {
83-
varlag =newRandom().nextInt(200) +50;
83+
varlag =newSecureRandom().nextInt(200) +50;
8484
Thread.sleep(lag);
8585
}catch (InterruptedExceptione) {
8686
logger.error(e.getMessage());

‎hexagonal/src/main/java/com/iluwatar/hexagonal/domain/LotteryNumbers.java

Lines changed: 2 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -24,10 +24,10 @@
2424
packagecom.iluwatar.hexagonal.domain;
2525

2626
importcom.google.common.base.Joiner;
27+
importjava.security.SecureRandom;
2728
importjava.util.Collections;
2829
importjava.util.HashSet;
2930
importjava.util.PrimitiveIterator;
30-
importjava.util.Random;
3131
importjava.util.Set;
3232

3333
/**
@@ -126,7 +126,7 @@ private static class RandomNumberGenerator {
126126
* @param max the max value (inclusive)
127127
*/
128128
publicRandomNumberGenerator(intmin,intmax) {
129-
randomIterator =newRandom().ints(min,max +1).iterator();
129+
randomIterator =newSecureRandom().ints(min,max +1).iterator();
130130
}
131131

132132
/**

‎hexagonal/src/main/java/com/iluwatar/hexagonal/sampledata/SampleData.java

Lines changed: 2 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -30,9 +30,9 @@
3030
importcom.iluwatar.hexagonal.domain.LotteryTicket;
3131
importcom.iluwatar.hexagonal.domain.LotteryTicketId;
3232
importcom.iluwatar.hexagonal.domain.PlayerDetails;
33+
importjava.security.SecureRandom;
3334
importjava.util.AbstractMap.SimpleEntry;
3435
importjava.util.List;
35-
importjava.util.Random;
3636
importjava.util.stream.Collectors;
3737

3838
/**
@@ -41,7 +41,7 @@
4141
publicclassSampleData {
4242

4343
privatestaticfinalList<PlayerDetails>PLAYERS;
44-
privatestaticfinalRandomRANDOM =newRandom();
44+
privatestaticfinalSecureRandomRANDOM =newSecureRandom();
4545

4646
static {
4747
PLAYERS =List.of(

‎leader-followers/src/main/java/com/iluwatar/leaderfollowers/App.java

Lines changed: 2 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -23,7 +23,7 @@
2323

2424
packagecom.iluwatar.leaderfollowers;
2525

26-
importjava.util.Random;
26+
importjava.security.SecureRandom;
2727
importjava.util.concurrent.Executors;
2828
importjava.util.concurrent.TimeUnit;
2929

@@ -84,7 +84,7 @@ private static void execute(WorkCenter workCenter, TaskSet taskSet) throws Inter
8484
* Add tasks.
8585
*/
8686
privatestaticvoidaddTasks(TaskSettaskSet)throwsInterruptedException {
87-
varrand =newRandom();
87+
varrand =newSecureRandom();
8888
for (vari =0;i <5;i++) {
8989
vartime =Math.abs(rand.nextInt(1000));
9090
taskSet.addTask(newTask(time));

‎master-worker-pattern/src/main/java/com/iluwatar/masterworker/ArrayUtilityMethods.java

Lines changed: 2 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -23,7 +23,7 @@
2323

2424
packagecom.iluwatar.masterworker;
2525

26-
importjava.util.Random;
26+
importjava.security.SecureRandom;
2727
importorg.slf4j.Logger;
2828
importorg.slf4j.LoggerFactory;
2929

@@ -35,7 +35,7 @@ public class ArrayUtilityMethods {
3535

3636
privatestaticfinalLoggerLOGGER =LoggerFactory.getLogger(ArrayUtilityMethods.class);
3737

38-
privatestaticfinalRandomRANDOM =newRandom();
38+
privatestaticfinalSecureRandomRANDOM =newSecureRandom();
3939

4040
/**
4141
* Method arraysSame compares 2 arrays @param a1 and @param a2 and @return whether their values

‎producer-consumer/src/main/java/com/iluwatar/producer/consumer/Producer.java

Lines changed: 2 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -23,15 +23,15 @@
2323

2424
packagecom.iluwatar.producer.consumer;
2525

26-
importjava.util.Random;
26+
importjava.security.SecureRandom;
2727

2828
/**
2929
* Class responsible for producing unit of work that can be expressed as {@link Item} and submitted
3030
* to queue.
3131
*/
3232
publicclassProducer {
3333

34-
privatestaticfinalRandomRANDOM =newRandom();
34+
privatestaticfinalSecureRandomRANDOM =newSecureRandom();
3535

3636
privatefinalItemQueuequeue;
3737

‎sharding/src/main/java/com/iluwatar/sharding/LookupShardManager.java

Lines changed: 2 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -23,9 +23,9 @@
2323

2424
packagecom.iluwatar.sharding;
2525

26+
importjava.security.SecureRandom;
2627
importjava.util.HashMap;
2728
importjava.util.Map;
28-
importjava.util.Random;
2929

3030
importorg.slf4j.Logger;
3131
importorg.slf4j.LoggerFactory;
@@ -58,7 +58,7 @@ protected int allocateShard(Data data) {
5858
returnlookupMap.get(key);
5959
}else {
6060
varshardCount =shardMap.size();
61-
returnnewRandom().nextInt(shardCount -1) +1;
61+
returnnewSecureRandom().nextInt(shardCount -1) +1;
6262
}
6363
}
6464

‎spatial-partition/src/main/java/com/iluwatar/spatialpartition/App.java

Lines changed: 2 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -23,8 +23,8 @@
2323

2424
packagecom.iluwatar.spatialpartition;
2525

26+
importjava.security.SecureRandom;
2627
importjava.util.HashMap;
27-
importjava.util.Random;
2828
importorg.slf4j.Logger;
2929
importorg.slf4j.LoggerFactory;
3030

@@ -112,7 +112,7 @@ static void withSpatialPartition(
112112
publicstaticvoidmain(String[]args) {
113113
varbubbles1 =newHashMap<Integer,Bubble>();
114114
varbubbles2 =newHashMap<Integer,Bubble>();
115-
varrand =newRandom();
115+
varrand =newSecureRandom();
116116
for (inti =0;i <10000;i++) {
117117
varb =newBubble(rand.nextInt(300),rand.nextInt(300),i,rand.nextInt(2) +1);
118118
bubbles1.put(i,b);

‎spatial-partition/src/main/java/com/iluwatar/spatialpartition/Bubble.java

Lines changed: 2 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -23,9 +23,9 @@
2323

2424
packagecom.iluwatar.spatialpartition;
2525

26+
importjava.security.SecureRandom;
2627
importjava.util.Collection;
2728
importjava.util.HashMap;
28-
importjava.util.Random;
2929
importorg.slf4j.Logger;
3030
importorg.slf4j.LoggerFactory;
3131

@@ -36,7 +36,7 @@
3636

3737
publicclassBubbleextendsPoint<Bubble> {
3838
privatestaticfinalLoggerLOGGER =LoggerFactory.getLogger(Bubble.class);
39-
privatestaticfinalRandomRANDOM =newRandom();
39+
privatestaticfinalSecureRandomRANDOM =newSecureRandom();
4040

4141
finalintradius;
4242

‎typeobjectpattern/src/main/java/com/iluwatar/typeobject/CellPool.java

Lines changed: 2 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -26,9 +26,9 @@
2626
importcom.iluwatar.typeobject.Candy.Type;
2727

2828
importjava.io.IOException;
29+
importjava.security.SecureRandom;
2930
importjava.util.ArrayList;
3031
importjava.util.List;
31-
importjava.util.Random;
3232
importorg.json.simple.parser.ParseException;
3333

3434
/**
@@ -38,7 +38,7 @@
3838
*/
3939

4040
publicclassCellPool {
41-
privatestaticfinalRandomRANDOM =newRandom();
41+
privatestaticfinalSecureRandomRANDOM =newSecureRandom();
4242
publicstaticfinalStringFRUIT ="fruit";
4343
publicstaticfinalStringCANDY ="candy";
4444
List<Cell>pool;

‎update-method/src/main/java/com/iluwatar/updatemethod/World.java

Lines changed: 2 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -23,9 +23,9 @@
2323

2424
packagecom.iluwatar.updatemethod;
2525

26+
importjava.security.SecureRandom;
2627
importjava.util.ArrayList;
2728
importjava.util.List;
28-
importjava.util.Random;
2929

3030
importorg.slf4j.Logger;
3131
importorg.slf4j.LoggerFactory;
@@ -66,7 +66,7 @@ private void gameLoop() {
6666
*/
6767
privatevoidprocessInput() {
6868
try {
69-
intlag =newRandom().nextInt(200) +50;
69+
intlag =newSecureRandom().nextInt(200) +50;
7070
Thread.sleep(lag);
7171
}catch (InterruptedExceptione) {
7272
LOGGER.error(e.getMessage());

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