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BAEL-1889 - Let's move the Java Number articles into a new module (#4619) 

* BAEL-1849 - Convert from String to Date in Java

* BAEL-1863 - Calling Callbacks with Mockito

* BAEL-1889 - Let's move the Java Number articles into a new module

* BAEL-1889 - Let's move the Java Number articles into a new module
This commit is contained in:
Jonathan Cook 2018-07-14 15:00:37 +02:00 committed by Grzegorz Piwowarek
parent de2afd7da8
commit b44883b364
41 changed files with 380 additions and 188 deletions
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2
algorithms/README.md
View File

@ -5,7 +5,6 @@
- [Ant Colony Optimization](http://www.baeldung.com/java-ant-colony-optimization)
- [Validating Input With Finite Automata in Java](http://www.baeldung.com/java-finite-automata)
- [Introduction to Jenetics Library](http://www.baeldung.com/jenetics)
- [Check If a Number Is Prime in Java](http://www.baeldung.com/java-prime-numbers)
- [Example of Hill Climbing Algorithm](http://www.baeldung.com/java-hill-climbing-algorithm)
- [Monte Carlo Tree Search for Tic-Tac-Toe Game](http://www.baeldung.com/java-monte-carlo-tree-search)
- [String Search Algorithms for Large Texts](http://www.baeldung.com/java-full-text-search-algorithms)
@ -21,7 +20,6 @@
- [Create a Sudoku Solver in Java](http://www.baeldung.com/java-sudoku)
- [Displaying Money Amounts in Words](http://www.baeldung.com/java-money-into-words)
- [A Collaborative Filtering Recommendation System in Java](http://www.baeldung.com/java-collaborative-filtering-recommendations)
- [Find All Pairs of Numbers in an Array That Add Up to a Given Sum](http://www.baeldung.com/java-algorithm-number-pairs-sum)
- [Converting Between Roman and Arabic Numerals in Java](http://www.baeldung.com/java-convert-roman-arabic)
- [Practical Java Examples of the Big O Notation](http://www.baeldung.com/java-algorithm-complexity)
- [Find the Middle Element of a Linked List](http://www.baeldung.com/java-linked-list-middle-element)

7
algorithms/src/main/java/com/baeldung/algorithms/RunAlgorithm.java
View File

@ -6,7 +6,6 @@ import com.baeldung.algorithms.ga.annealing.SimulatedAnnealing;
import com.baeldung.algorithms.ga.ant_colony.AntColonyOptimization;
import com.baeldung.algorithms.ga.binary.SimpleGeneticAlgorithm;
import com.baeldung.algorithms.slope_one.SlopeOne;
import com.baeldung.algorithms.pairsaddupnumber.FindPairs;
public class RunAlgorithm {
@ -39,12 +38,6 @@ public class RunAlgorithm {
case 5:
System.out.println("Please run the DijkstraAlgorithmTest.");
break;
case 6:
final FindPairs findPairs = new FindPairs();
final int[] input = {1, 4, 3, 2, 1, 4, 4, 3, 3};
final int sum = 6;
findPairs.execute(input, sum);
break;
default:
System.out.println("Unknown option");
break;

59
algorithms/src/main/java/com/baeldung/algorithms/prime/PrimeGenerator.java
View File

@ -1,59 +0,0 @@
package com.baeldung.algorithms.prime;
import java.util.Arrays;
import java.util.LinkedList;
import java.util.List;
import java.util.stream.Collectors;
import java.util.stream.IntStream;
public class PrimeGenerator {
public static List<Integer> sieveOfEratosthenes(int n) {
final boolean prime[] = new boolean[n + 1];
Arrays.fill(prime, true);
for (int p = 2; p * p <= n; p++) {
if (prime[p]) {
for (int i = p * 2; i <= n; i += p)
prime[i] = false;
}
}
final List<Integer> primes = new LinkedList<>();
for (int i = 2; i <= n; i++) {
if (prime[i])
primes.add(i);
}
return primes;
}
public static List<Integer> primeNumbersBruteForce(int max) {
final List<Integer> primeNumbers = new LinkedList<Integer>();
for (int i = 2; i <= max; i++) {
if (isPrimeBruteForce(i)) {
primeNumbers.add(i);
}
}
return primeNumbers;
}
private static boolean isPrimeBruteForce(int x) {
for (int i = 2; i < x; i++) {
if (x % i == 0) {
return false;
}
}
return true;
}
public static List<Integer> primeNumbersTill(int max) {
return IntStream.rangeClosed(2, max)
.filter(x -> isPrime(x))
.boxed()
.collect(Collectors.toList());
}
private static boolean isPrime(int x) {
return IntStream.rangeClosed(2, (int) (Math.sqrt(x)))
.allMatch(n -> x % n != 0);
}
}

28
algorithms/src/test/java/com/baeldung/algorithms/prime/PrimeGeneratorUnitTest.java
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@ -1,28 +0,0 @@
package com.baeldung.algorithms.prime;
import static com.baeldung.algorithms.prime.PrimeGenerator.*;
import java.util.Arrays;
import java.util.List;
import org.junit.Test;
import static org.junit.Assert.*;
public class PrimeGeneratorUnitTest {
@Test
public void whenBruteForced_returnsSuccessfully() {
final List<Integer> primeNumbers = primeNumbersBruteForce(20);
assertEquals(Arrays.asList(new Integer[] { 2, 3, 5, 7, 11, 13, 17, 19 }), primeNumbers);
}
@Test
public void whenOptimized_returnsSuccessfully() {
final List<Integer> primeNumbers = primeNumbersTill(20);
assertEquals(Arrays.asList(new Integer[] { 2, 3, 5, 7, 11, 13, 17, 19 }), primeNumbers);
}
@Test
public void whenSieveOfEratosthenes_returnsSuccessfully() {
final List<Integer> primeNumbers = sieveOfEratosthenes(20);
assertEquals(Arrays.asList(new Integer[] { 2, 3, 5, 7, 11, 13, 17, 19 }), primeNumbers);
}
}

1
core-java-8/README.md
View File

@ -32,7 +32,6 @@
- [“Stream has already been operated upon or closed” Exception in Java](http://www.baeldung.com/java-stream-operated-upon-or-closed-exception)
- [Display All Time Zones With GMT And UTC in Java](http://www.baeldung.com/java-time-zones)
- [Copy a File with Java](http://www.baeldung.com/java-copy-file)
- [Generating Prime Numbers in Java](http://www.baeldung.com/java-generate-prime-numbers)
- [Static and Default Methods in Interfaces in Java](http://www.baeldung.com/java-static-default-methods)
- [Iterable to Stream in Java](http://www.baeldung.com/java-iterable-to-stream)
- [Converting String to Stream of chars](http://www.baeldung.com/java-string-to-stream)

6
core-java/README.md
View File

@ -3,7 +3,6 @@
## Core Java Cookbooks and Examples
### Relevant Articles:
- [Java – Random Long, Float, Integer and Double](http://www.baeldung.com/java-generate-random-long-float-integer-double)
- [Java – Generate Random String](http://www.baeldung.com/java-random-string)
- [Java Timer](http://www.baeldung.com/java-timer-and-timertask)
- [How to Run a Shell Command in Java](http://www.baeldung.com/run-shell-command-in-java)
@ -38,7 +37,6 @@
- [A Quick JUnit vs TestNG Comparison](http://www.baeldung.com/junit-vs-testng)
- [Java Primitive Conversions](http://www.baeldung.com/java-primitive-conversions)
- [Java Money and the Currency API](http://www.baeldung.com/java-money-and-currency)
- [Using Math.pow in Java](http://www.baeldung.com/java-math-pow)
- [Converting Strings to Enums in Java](http://www.baeldung.com/java-string-to-enum)
- [Quick Guide to the Java StringTokenizer](http://www.baeldung.com/java-stringtokenizer)
- [JVM Log Forging](http://www.baeldung.com/jvm-log-forging)
@ -49,7 +47,6 @@
- [How to Add a Single Element to a Stream](http://www.baeldung.com/java-stream-append-prepend)
- [Iterating Over Enum Values in Java](http://www.baeldung.com/java-enum-iteration)
- [Kotlin Java Interoperability](http://www.baeldung.com/kotlin-java-interoperability)
- [How to Round a Number to N Decimal Places in Java](http://www.baeldung.com/java-round-decimal-number)
- [Changing Annotation Parameters At Runtime](http://www.baeldung.com/java-reflection-change-annotation-params)
- [How to Find all Getters Returning Null](http://www.baeldung.com/java-getters-returning-null)
- [Changing the Order in a Sum Operation Can Produce Different Results?](http://www.baeldung.com/java-floating-point-sum-order)
@ -77,7 +74,6 @@
- [“Sneaky Throws” in Java](http://www.baeldung.com/java-sneaky-throws)
- [OutOfMemoryError: GC Overhead Limit Exceeded](http://www.baeldung.com/java-gc-overhead-limit-exceeded)
- [StringBuilder and StringBuffer in Java](http://www.baeldung.com/java-string-builder-string-buffer)
- [Number of Digits in an Integer in Java](http://www.baeldung.com/java-number-of-digits-in-int)
- [Creating a Java Compiler Plugin](http://www.baeldung.com/java-build-compiler-plugin)
- [A Guide to the Static Keyword in Java](http://www.baeldung.com/java-static)
- [Initializing Arrays in Java](http://www.baeldung.com/java-initialize-array)
@ -132,7 +128,6 @@
- [Find Sum and Average in a Java Array](http://www.baeldung.com/java-array-sum-average)
- [Java List UnsupportedOperationException](http://www.baeldung.com/java-list-unsupported-operation-exception)
- [Type Erasure in Java Explained](http://www.baeldung.com/java-type-erasure)
- [BigDecimal and BigInteger in Java](http://www.baeldung.com/java-bigdecimal-biginteger)
- [Display All Time Zones With GMT And UTC in Java](http://www.baeldung.com/java-time-zones)
- [Join and Split Arrays and Collections in Java](http://www.baeldung.com/java-join-and-split)
- [Check If Two Lists are Equal in Java](http://www.baeldung.com/java-test-a-list-for-ordinality-and-equality)
@ -147,7 +142,6 @@
- [Check If a String Is Numeric in Java](http://www.baeldung.com/java-check-string-number)
- [Variable and Method Hiding in Java](http://www.baeldung.com/java-variable-method-hiding)
- [Access Modifiers in Java](http://www.baeldung.com/java-access-modifiers)
- [NaN in Java](http://www.baeldung.com/java-not-a-number)
- [Infinite Loops in Java](http://www.baeldung.com/infinite-loops-java)
- [Why Use char[] Array Over a String for Storing Passwords in Java?](http://www.baeldung.com/java-storing-passwords)
- [Introduction to Creational Design Patterns](http://www.baeldung.com/creational-design-patterns)

11
core-java/pom.xml
View File

@ -25,16 +25,6 @@
<artifactId>commons-lang3</artifactId>
<version>${commons-lang3.version}</version>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-math3</artifactId>
<version>${commons-math3.version}</version>
</dependency>
<dependency>
<groupId>org.decimal4j</groupId>
<artifactId>decimal4j</artifactId>
<version>${decimal4j.version}</version>
</dependency>
<dependency>
<groupId>org.bouncycastle</groupId>
<artifactId>bcprov-jdk15on</artifactId>
@ -393,6 +383,7 @@
<commons-lang3.version>3.5</commons-lang3.version>
<bouncycastle.version>1.55</bouncycastle.version>
<commons-codec.version>1.10</commons-codec.version>
<commons-io.version>2.5</commons-io.version>
<commons-math3.version>3.6.1</commons-math3.version>
<decimal4j.version>1.0.3</decimal4j.version>
<unix4j.version>0.4</unix4j.version>

18
core-java/src/main/java/com/baeldung/maths/BigDecimalImpl.java
View File

@ -1,18 +0,0 @@
package com.baeldung.maths;
import java.math.BigDecimal;
import java.math.RoundingMode;
public class BigDecimalImpl {
public static void main(String[] args) {
BigDecimal serviceTax = new BigDecimal("56.0084578639");
serviceTax = serviceTax.setScale(2, RoundingMode.CEILING);
BigDecimal entertainmentTax = new BigDecimal("23.00689");
entertainmentTax = entertainmentTax.setScale(2, RoundingMode.FLOOR);
BigDecimal totalTax = serviceTax.add(entertainmentTax);
}
}

16
core-java/src/main/java/com/baeldung/maths/BigIntegerImpl.java
View File

@ -1,16 +0,0 @@
package com.baeldung.maths;
import java.math.BigInteger;
public class BigIntegerImpl {
public static void main(String[] args) {
BigInteger numStarsMilkyWay = new BigInteger("8731409320171337804361260816606476");
BigInteger numStarsAndromeda = new BigInteger("5379309320171337804361260816606476");
BigInteger totalStars = numStarsMilkyWay.add(numStarsAndromeda);
}
}

26
java-numbers/.gitignore vendored Normal file
View File

@ -0,0 +1,26 @@
*.class
0.*
#folders#
/target
/neoDb*
/data
/src/main/webapp/WEB-INF/classes
*/META-INF/*
.resourceCache
# Packaged files #
*.jar
*.war
*.ear
# Files generated by integration tests
*.txt
backup-pom.xml
/bin/
/temp
#IntelliJ specific
.idea/
*.iml

14
java-numbers/README.md Normal file
View File

@ -0,0 +1,14 @@
=========
## Java Number Cookbooks and Examples
### Relevant Articles:
- [Number of Digits in an Integer in Java](http://www.baeldung.com/java-number-of-digits-in-int)
- [NaN in Java](http://www.baeldung.com/java-not-a-number)
- [How to Round a Number to N Decimal Places in Java](http://www.baeldung.com/java-round-decimal-number)
- [Check If a Number Is Prime in Java](http://www.baeldung.com/java-prime-numbers)
- [Using Math.pow in Java](http://www.baeldung.com/java-math-pow)
- [Generating Prime Numbers in Java](http://www.baeldung.com/java-generate-prime-numbers)
- [BigDecimal and BigInteger in Java](http://www.baeldung.com/java-bigdecimal-biginteger)
- [Find All Pairs of Numbers in an Array That Add Up to a Given Sum](http://www.baeldung.com/java-algorithm-number-pairs-sum)
- [Java – Random Long, Float, Integer and Double](http://www.baeldung.com/java-generate-random-long-float-integer-double)

286
java-numbers/pom.xml Normal file
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@ -0,0 +1,286 @@
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<artifactId>java-numbers</artifactId>
<version>0.1.0-SNAPSHOT</version>
<packaging>jar</packaging>
<name>java-numbers</name>
<parent>
<groupId>com.baeldung</groupId>
<artifactId>parent-java</artifactId>
<version>0.0.1-SNAPSHOT</version>
<relativePath>../parent-java</relativePath>
</parent>
<dependencies>
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>${log4j.version}</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>${org.slf4j.version}</version>
</dependency>
<dependency>
<groupId>ch.qos.logback</groupId>
<artifactId>logback-classic</artifactId>
<version>${logback.version}</version>
</dependency>
<dependency>
<groupId>org.openjdk.jmh</groupId>
<artifactId>jmh-core</artifactId>
<version>${jmh-core.version}</version>
</dependency>
<dependency>
<groupId>org.openjdk.jmh</groupId>
<artifactId>jmh-generator-annprocess</artifactId>
<version>${jmh-generator-annprocess.version}</version>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-math3</artifactId>
<version>${commons-math3.version}</version>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
<version>${commons-lang3.version}</version>
</dependency>
<dependency>
<groupId>org.decimal4j</groupId>
<artifactId>decimal4j</artifactId>
<version>${decimal4j.version}</version>
</dependency>
<dependency>
<groupId>org.assertj</groupId>
<artifactId>assertj-core</artifactId>
<version>${assertj.version}</version>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<finalName>java-numbers</finalName>
<resources>
<resource>
<directory>src/main/resources</directory>
<filtering>true</filtering>
</resource>
</resources>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<configuration>
<excludes>
<exclude>**/*IntegrationTest.java</exclude>
</excludes>
<testFailureIgnore>true</testFailureIgnore>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-dependency-plugin</artifactId>
<executions>
<execution>
<id>copy-dependencies</id>
<phase>prepare-package</phase>
<goals>
<goal>copy-dependencies</goal>
</goals>
<configuration>
<outputDirectory>${project.build.directory}/libs</outputDirectory>
</configuration>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-jar-plugin</artifactId>
<version>${maven-jar-plugin.version}</version>
<configuration>
<archive>
<manifest>
<addClasspath>true</addClasspath>
<classpathPrefix>libs/</classpathPrefix>
<mainClass>org.baeldung.executable.ExecutableMavenJar</mainClass>
</manifest>
</archive>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-assembly-plugin</artifactId>
<executions>
<execution>
<phase>package</phase>
<goals>
<goal>single</goal>
</goals>
<configuration>
<archiveBaseDirectory>${project.basedir}</archiveBaseDirectory>
<archive>
<manifest>
<mainClass>org.baeldung.executable.ExecutableMavenJar</mainClass>
</manifest>
</archive>
<descriptorRefs>
<descriptorRef>jar-with-dependencies</descriptorRef>
</descriptorRefs>
</configuration>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-shade-plugin</artifactId>
<version>${maven-shade-plugin.version}</version>
<executions>
<execution>
<goals>
<goal>shade</goal>
</goals>
<configuration>
<shadedArtifactAttached>true</shadedArtifactAttached>
<transformers>
<transformer
implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
<mainClass>org.baeldung.executable.ExecutableMavenJar</mainClass>
</transformer>
</transformers>
</configuration>
</execution>
</executions>
</plugin>
<plugin>
<groupId>com.jolira</groupId>
<artifactId>onejar-maven-plugin</artifactId>
<version>${onejar-maven-plugin.version}</version>
<executions>
<execution>
<configuration>
<mainClass>org.baeldung.executable.ExecutableMavenJar</mainClass>
<attachToBuild>true</attachToBuild>
<filename>${project.build.finalName}-onejar.${project.packaging}</filename>
</configuration>
<goals>
<goal>one-jar</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>exec-maven-plugin</artifactId>
<version>${exec-maven-plugin.version}</version>
<configuration>
<executable>java</executable>
<mainClass>com.baeldung.outofmemoryerror.OutOfMemoryGCLimitExceed</mainClass>
<arguments>
<argument>-Xmx300m</argument>
<argument>-XX:+UseParallelGC</argument>
<argument>-classpath</argument>
<classpath />
<argument>com.baeldung.outofmemoryerror.OutOfMemoryGCLimitExceed</argument>
</arguments>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-javadoc-plugin</artifactId>
<version>${maven-javadoc-plugin.version}</version>
<configuration>
<source>1.8</source>
<target>1.8</target>
</configuration>
</plugin>
</plugins>
</build>
<profiles>
<profile>
<id>integration</id>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<executions>
<execution>
<phase>integration-test</phase>
<goals>
<goal>test</goal>
</goals>
<configuration>
<includes>
<include>**/*IntegrationTest.java</include>
</includes>
</configuration>
</execution>
</executions>
<configuration>
<systemPropertyVariables>
<test.mime>json</test.mime>
</systemPropertyVariables>
</configuration>
</plugin>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>exec-maven-plugin</artifactId>
<executions>
<execution>
<id>run-benchmarks</id>
<!-- <phase>integration-test</phase> -->
<phase>none</phase>
<goals>
<goal>exec</goal>
</goals>
<configuration>
<classpathScope>test</classpathScope>
<executable>java</executable>
<arguments>
<argument>-classpath</argument>
<classpath />
<argument>org.openjdk.jmh.Main</argument>
<argument>.*</argument>
</arguments>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</build>
</profile>
</profiles>
<properties>
<commons-math3.version>3.6.1</commons-math3.version>
<decimal4j.version>1.0.3</decimal4j.version>
<commons-lang3.version>3.5</commons-lang3.version>
<assertj.version>3.6.1</assertj.version>
<org.slf4j.version>1.7.21</org.slf4j.version>
<logback.version>1.1.7</logback.version>
<jmh-core.version>1.19</jmh-core.version>
<jmh-generator-annprocess.version>1.19</jmh-generator-annprocess.version>
<maven-surefire-plugin.version>2.19.1</maven-surefire-plugin.version>
<maven-javadoc-plugin.version>3.0.0-M1</maven-javadoc-plugin.version>
<maven-jar-plugin.version>3.0.2</maven-jar-plugin.version>
<onejar-maven-plugin.version>1.4.4</onejar-maven-plugin.version>
<maven-shade-plugin.version>3.1.1</maven-shade-plugin.version>
</properties>
</project>

0
algorithms/src/main/java/com/baeldung/algorithms/primechecker/BigIntegerPrimeChecker.java → java-numbers/src/main/java/com/baeldung/algorithms/primechecker/BigIntegerPrimeChecker.java
View File

8
algorithms/src/main/java/com/baeldung/algorithms/primechecker/BruteForcePrimeChecker.java → java-numbers/src/main/java/com/baeldung/algorithms/primechecker/BruteForcePrimeChecker.java
View File

@ -1,16 +1,14 @@
package com.baeldung.algorithms.primechecker;
import java.util.stream.IntStream;
import java.util.stream.LongStream;
public class BruteForcePrimeChecker implements PrimeChecker<Integer>{
public class BruteForcePrimeChecker implements PrimeChecker<Integer> {
@Override
public boolean isPrime(Integer number) {
return number > 2 ? IntStream.range(2, number)
.noneMatch(n -> (number % n == 0)) : false;
}
}
}

4
algorithms/src/main/java/com/baeldung/algorithms/primechecker/OptimisedPrimeChecker.java → java-numbers/src/main/java/com/baeldung/algorithms/primechecker/OptimisedPrimeChecker.java
View File

@ -1,9 +1,8 @@
package com.baeldung.algorithms.primechecker;
import java.util.stream.IntStream;
import java.util.stream.LongStream;
public class OptimisedPrimeChecker implements PrimeChecker<Integer>{
public class OptimisedPrimeChecker implements PrimeChecker<Integer> {
@Override
public boolean isPrime(Integer number) {
@ -11,5 +10,4 @@ public class OptimisedPrimeChecker implements PrimeChecker<Integer>{
.noneMatch(n -> (number % n == 0)) : false;
}
}

0
algorithms/src/main/java/com/baeldung/algorithms/primechecker/PrimeChecker.java → java-numbers/src/main/java/com/baeldung/algorithms/primechecker/PrimeChecker.java
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0
algorithms/src/main/java/com/baeldung/algorithms/primechecker/PrimesPrimeChecker.java → java-numbers/src/main/java/com/baeldung/algorithms/primechecker/PrimesPrimeChecker.java
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0
core-java/src/main/java/com/baeldung/maths/FloatingPointArithmetic.java → java-numbers/src/main/java/com/baeldung/maths/FloatingPointArithmetic.java
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0
core-java/src/main/java/com/baeldung/maths/Round.java → java-numbers/src/main/java/com/baeldung/maths/Round.java
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0
core-java/src/main/java/com/baeldung/nan/NaNExample.java → java-numbers/src/main/java/com/baeldung/nan/NaNExample.java
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0
core-java/src/main/java/com/baeldung/numberofdigits/Benchmarking.java → java-numbers/src/main/java/com/baeldung/numberofdigits/Benchmarking.java
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0
core-java/src/main/java/com/baeldung/numberofdigits/NumberOfDigits.java → java-numbers/src/main/java/com/baeldung/numberofdigits/NumberOfDigits.java
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20
core-java/src/main/java/com/baeldung/numberofdigits/NumberOfDigitsDriver.java → java-numbers/src/main/java/com/baeldung/numberofdigits/NumberOfDigitsDriver.java
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@ -4,32 +4,32 @@ import org.apache.log4j.Logger;
public class NumberOfDigitsDriver {
private static NumberOfDigits numberOfDigits;
private static Logger LOG = Logger.getLogger(NumberOfDigitsDriver.class);
static {
numberOfDigits = new NumberOfDigits();
}
public static void main(String[] args) {
LOG.info("Testing all methods...");
long length = numberOfDigits.stringBasedSolution(602);
LOG.info("String Based Solution : " + length);
length = numberOfDigits.logarithmicApproach(602);
LOG.info("Logarithmic Approach : " + length);
length = numberOfDigits.repeatedMultiplication(602);
LOG.info("Repeated Multiplication : " + length);
length = numberOfDigits.shiftOperators(602);
LOG.info("Shift Operators : " + length);
length = numberOfDigits.dividingWithPowersOf2(602);
LOG.info("Dividing with Powers of 2 : " + length);
length = numberOfDigits.divideAndConquer(602);
LOG.info("Divide And Conquer : " + length);
}
}
}

6
algorithms/src/main/java/com/baeldung/algorithms/pairsaddupnumber/DifferentPairs.java → java-numbers/src/main/java/com/baeldung/pairsaddupnumber/DifferentPairs.java
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@ -1,4 +1,4 @@
package com.baeldung.algorithms.pairsaddupnumber;
package com.baeldung.pairsaddupnumber;
import java.util.ArrayList;
@ -23,7 +23,7 @@ public class DifferentPairs {
public static List<Integer> findPairsWithForLoop(int[] input, int sum) {
final List<Integer> allDifferentPairs = new ArrayList<>();
// Aux. hash map
final Map<Integer, Integer> pairs = new HashMap();
final Map<Integer, Integer> pairs = new HashMap<>();
for (int i : input) {
if (pairs.containsKey(i)) {
if (pairs.get(i) != null) {
@ -51,7 +51,7 @@ public class DifferentPairs {
public static List<Integer> findPairsWithStreamApi(int[] input, int sum) {
final List<Integer> allDifferentPairs = new ArrayList<>();
// Aux. hash map
final Map<Integer, Integer> pairs = new HashMap();
final Map<Integer, Integer> pairs = new HashMap<>();
IntStream.range(0, input.length).forEach(i -> {
if (pairs.containsKey(input[i])) {
if (pairs.get(input[i]) != null) {

2
algorithms/src/main/java/com/baeldung/algorithms/pairsaddupnumber/ExistingPairs.java → java-numbers/src/main/java/com/baeldung/pairsaddupnumber/ExistingPairs.java
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@ -1,4 +1,4 @@
package com.baeldung.algorithms.pairsaddupnumber;
package com.baeldung.pairsaddupnumber;
import java.util.ArrayList;

2
algorithms/src/main/java/com/baeldung/algorithms/pairsaddupnumber/FindPairs.java → java-numbers/src/main/java/com/baeldung/pairsaddupnumber/FindPairs.java
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@ -1,4 +1,4 @@
package com.baeldung.algorithms.pairsaddupnumber;
package com.baeldung.pairsaddupnumber;
import java.util.ArrayList;
import java.util.List;

0
core-java/src/main/java/com/baeldung/pow/PowerExample.java → java-numbers/src/main/java/com/baeldung/pow/PowerExample.java
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0
core-java-8/src/main/java/com/baeldung/prime/PrimeGenerator.java → java-numbers/src/main/java/com/baeldung/prime/PrimeGenerator.java
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6
java-numbers/src/main/resources/log4j.properties Normal file
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@ -0,0 +1,6 @@
log4j.rootLogger=DEBUG, A1
log4j.appender.A1=org.apache.log4j.ConsoleAppender
log4j.appender.A1.layout=org.apache.log4j.PatternLayout
log4j.appender.A1.layout.ConversionPattern=%-4r [%t] %-5p %c %x - %m%n

13
java-numbers/src/main/resources/logback.xml Normal file
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@ -0,0 +1,13 @@
<?xml version="1.0" encoding="UTF-8"?>
<configuration>
<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
<encoder>
<pattern>web - %date [%thread] %-5level %logger{36} - %message%n
</pattern>
</encoder>
</appender>
<root level="INFO">
<appender-ref ref="STDOUT" />
</root>
</configuration>

19
algorithms/src/test/java/com/baeldung/algorithms/primechecker/PrimeCheckerUnitTest.java → java-numbers/src/test/java/com/baeldung/algorithms/primechecker/PrimeCheckerUnitTest.java
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@ -8,16 +8,16 @@ import static org.junit.Assert.assertTrue;
public class PrimeCheckerUnitTest {
private final BigIntegerPrimeChecker primeChecker = new BigIntegerPrimeChecker();
@Test
public void whenCheckIsPrime_thenTrue(){
public void whenCheckIsPrime_thenTrue() {
assertTrue(primeChecker.isPrime(13l));
assertTrue(primeChecker.isPrime(1009L));
assertTrue(primeChecker.isPrime(74207281L));
}
@Test
public void whenCheckIsPrime_thenFalse(){
public void whenCheckIsPrime_thenFalse() {
assertTrue(!primeChecker.isPrime(50L));
assertTrue(!primeChecker.isPrime(1001L));
assertTrue(!primeChecker.isPrime(74207282L));
@ -26,28 +26,27 @@ public class PrimeCheckerUnitTest {
private final BruteForcePrimeChecker bfPrimeChecker = new BruteForcePrimeChecker();
@Test
public void whenBFCheckIsPrime_thenTrue(){
public void whenBFCheckIsPrime_thenTrue() {
assertTrue(bfPrimeChecker.isPrime(13));
assertTrue(bfPrimeChecker.isPrime(1009));
}
@Test
public void whenBFCheckIsPrime_thenFalse(){
public void whenBFCheckIsPrime_thenFalse() {
assertFalse(bfPrimeChecker.isPrime(50));
assertFalse(bfPrimeChecker.isPrime(1001));
}
private final OptimisedPrimeChecker optimisedPrimeChecker = new OptimisedPrimeChecker();
@Test
public void whenOptCheckIsPrime_thenTrue(){
public void whenOptCheckIsPrime_thenTrue() {
assertTrue(optimisedPrimeChecker.isPrime(13));
assertTrue(optimisedPrimeChecker.isPrime(1009));
}
@Test
public void whenOptCheckIsPrime_thenFalse(){
public void whenOptCheckIsPrime_thenFalse() {
assertFalse(optimisedPrimeChecker.isPrime(50));
assertFalse(optimisedPrimeChecker.isPrime(1001));
}
@ -65,5 +64,5 @@ public class PrimeCheckerUnitTest {
assertFalse(primesPrimeChecker.isPrime(50));
assertFalse(primesPrimeChecker.isPrime(1001));
}
}

0
core-java/src/test/java/com/baeldung/maths/BigDecimalImplUnitTest.java → java-numbers/src/test/java/com/baeldung/maths/BigDecimalImplUnitTest.java
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0
core-java/src/test/java/com/baeldung/maths/BigIntegerImplUnitTest.java → java-numbers/src/test/java/com/baeldung/maths/BigIntegerImplUnitTest.java
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0
core-java/src/test/java/com/baeldung/maths/FloatingPointArithmeticUnitTest.java → java-numbers/src/test/java/com/baeldung/maths/FloatingPointArithmeticUnitTest.java
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3
core-java/src/test/java/com/baeldung/maths/RoundUnitTest.java → java-numbers/src/test/java/com/baeldung/maths/RoundUnitTest.java
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@ -5,9 +5,6 @@ import org.decimal4j.util.DoubleRounder;
import org.junit.Assert;
import org.junit.Test;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotEquals;
public class RoundUnitTest {
private double value = 2.03456d;
private int places = 2;

0
core-java/src/test/java/com/baeldung/numberofdigits/NumberOfDigitsIntegrationTest.java → java-numbers/src/test/java/com/baeldung/numberofdigits/NumberOfDigitsIntegrationTest.java
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2
algorithms/src/test/java/com/baeldung/algorithms/pairsaddupnumber/DifferentPairsUnitTest.java → java-numbers/src/test/java/com/baeldung/pairsaddupnumber/DifferentPairsUnitTest.java
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@ -1,4 +1,4 @@
package com.baeldung.algorithms.pairsaddupnumber;
package com.baeldung.pairsaddupnumber;
import org.junit.Test;

2
algorithms/src/test/java/com/baeldung/algorithms/pairsaddupnumber/ExistingPairsUnitTest.java → java-numbers/src/test/java/com/baeldung/pairsaddupnumber/ExistingPairsUnitTest.java
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@ -1,4 +1,4 @@
package com.baeldung.algorithms.pairsaddupnumber;
package com.baeldung.pairsaddupnumber;
import org.junit.Test;
import java.util.List;

4
core-java-8/src/test/java/com/baeldung/prime/PrimeGeneratorUnitTest.java → java-numbers/src/test/java/com/baeldung/prime/PrimeGeneratorUnitTest.java
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@ -1,10 +1,10 @@
package com.baeldung.prime;
import static com.baeldung.prime.PrimeGenerator.*;
import java.util.Arrays;
import java.util.List;
import org.junit.Test;
import static com.baeldung.prime.PrimeGenerator.*;
import static org.junit.Assert.*;
public class PrimeGeneratorUnitTest {

2
core-java/src/test/java/org/baeldung/java/JavaRandomUnitTest.java → java-numbers/src/test/java/com/baeldung/random/JavaRandomUnitTest.java
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@ -1,4 +1,4 @@
package org.baeldung.java;
package com.baeldung.random;
import org.apache.commons.lang3.RandomStringUtils;
import org.apache.commons.math3.random.RandomDataGenerator;

1
pom.xml
View File

@ -76,6 +76,7 @@
<module>persistence-modules/java-cassandra</module>
<module>vavr</module>
<module>java-lite</module>
<module>java-numbers</module>
<module>java-rmi</module>
<module>java-vavr-stream</module>
<module>javax-servlets</module>