Merge branch 'master' into master

This commit is contained in:
iaforek
2017-09-04 21:42:11 +01:00
committed by GitHub
153 changed files with 9143 additions and 739 deletions
+432 -427
View File
@@ -1,471 +1,476 @@
<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>
<groupId>com.baeldung</groupId>
<artifactId>core-java</artifactId>
<version>0.1.0-SNAPSHOT</version>
<packaging>jar</packaging>
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>
<groupId>com.baeldung</groupId>
<artifactId>core-java</artifactId>
<version>0.1.0-SNAPSHOT</version>
<packaging>jar</packaging>
<name>core-java</name>
<name>core-java</name>
<dependencies>
<dependencies>
<!-- utils -->
<dependency>
<groupId>net.sourceforge.collections</groupId>
<artifactId>collections-generic</artifactId>
<version>${collections-generic.version}</version>
</dependency>
<dependency>
<groupId>com.google.guava</groupId>
<artifactId>guava</artifactId>
<version>${guava.version}</version>
</dependency>
<!-- utils -->
<dependency>
<groupId>net.sourceforge.collections</groupId>
<artifactId>collections-generic</artifactId>
<version>${collections-generic.version}</version>
</dependency>
<dependency>
<groupId>com.google.guava</groupId>
<artifactId>guava</artifactId>
<version>${guava.version}</version>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-collections4</artifactId>
<version>${commons-collections4.version}</version>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-collections4</artifactId>
<version>${commons-collections4.version}</version>
</dependency>
<dependency>
<groupId>commons-io</groupId>
<artifactId>commons-io</artifactId>
<version>${commons-io.version}</version>
</dependency>
<dependency>
<groupId>commons-io</groupId>
<artifactId>commons-io</artifactId>
<version>${commons-io.version}</version>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
<version>${commons-lang3.version}</version>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
<version>${commons-lang3.version}</version>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-math3</artifactId>
<version>${commons-math3.version}</version>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-math3</artifactId>
<version>${commons-math3.version}</version>
</dependency>
<dependency>
<groupId>org.decimal4j</groupId>
<artifactId>decimal4j</artifactId>
<version>${decimal4j.version}</version>
</dependency>
<dependency>
<groupId>org.decimal4j</groupId>
<artifactId>decimal4j</artifactId>
<version>${decimal4j.version}</version>
</dependency>
<dependency>
<groupId>org.bouncycastle</groupId>
<artifactId>bcprov-jdk15on</artifactId>
<version>${bouncycastle.version}</version>
</dependency>
<dependency>
<groupId>org.bouncycastle</groupId>
<artifactId>bcprov-jdk15on</artifactId>
<version>${bouncycastle.version}</version>
</dependency>
<dependency>
<groupId>org.unix4j</groupId>
<artifactId>unix4j-command</artifactId>
<version>${unix4j.version}</version>
</dependency>
<dependency>
<groupId>org.unix4j</groupId>
<artifactId>unix4j-command</artifactId>
<version>${unix4j.version}</version>
</dependency>
<dependency>
<groupId>com.googlecode.grep4j</groupId>
<artifactId>grep4j</artifactId>
<version>${grep4j.version}</version>
</dependency>
<!-- web -->
<dependency>
<groupId>com.googlecode.grep4j</groupId>
<artifactId>grep4j</artifactId>
<version>${grep4j.version}</version>
</dependency>
<!-- web -->
<!-- marshalling -->
<!-- marshalling -->
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>${jackson.version}</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>${jackson.version}</version>
</dependency>
<!-- logging -->
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.17</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>
<!-- <scope>runtime</scope> -->
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>jcl-over-slf4j</artifactId>
<version>${org.slf4j.version}</version>
<!-- <scope>runtime</scope> --> <!-- some spring dependencies need to compile against jcl -->
</dependency>
<dependency> <!-- needed to bridge to slf4j for projects that use the log4j APIs directly -->
<groupId>org.slf4j</groupId>
<artifactId>log4j-over-slf4j</artifactId>
<version>${org.slf4j.version}</version>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>${lombok.version}</version>
<scope>provided</scope>
</dependency>
<!-- logging -->
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.17</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>${org.slf4j.version}</version>
</dependency>
<dependency>
<groupId>ch.qos.logback</groupId>
<artifactId>logback-classic</artifactId>
<version>${logback.version}</version>
<!-- <scope>runtime</scope> -->
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>jcl-over-slf4j</artifactId>
<version>${org.slf4j.version}</version>
<!-- <scope>runtime</scope> --> <!-- some spring dependencies need to compile against jcl -->
</dependency>
<dependency> <!-- needed to bridge to slf4j for projects that use the log4j APIs directly -->
<groupId>org.slf4j</groupId>
<artifactId>log4j-over-slf4j</artifactId>
<version>${org.slf4j.version}</version>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>${lombok.version}</version>
<scope>provided</scope>
</dependency>
<!-- test scoped -->
<!-- test scoped -->
<dependency>
<groupId>org.hamcrest</groupId>
<artifactId>hamcrest-all</artifactId>
<version>1.3</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.hamcrest</groupId>
<artifactId>hamcrest-all</artifactId>
<version>1.3</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>${junit.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>${junit.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.hamcrest</groupId>
<artifactId>hamcrest-core</artifactId>
<version>${org.hamcrest.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.hamcrest</groupId>
<artifactId>hamcrest-library</artifactId>
<version>${org.hamcrest.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.hamcrest</groupId>
<artifactId>hamcrest-core</artifactId>
<version>${org.hamcrest.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.hamcrest</groupId>
<artifactId>hamcrest-library</artifactId>
<version>${org.hamcrest.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.assertj</groupId>
<artifactId>assertj-core</artifactId>
<version>${assertj.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.assertj</groupId>
<artifactId>assertj-core</artifactId>
<version>${assertj.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.mockito</groupId>
<artifactId>mockito-core</artifactId>
<version>${mockito.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>com.jayway.awaitility</groupId>
<artifactId>awaitility</artifactId>
<version>${avaitility.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.mockito</groupId>
<artifactId>mockito-core</artifactId>
<version>${mockito.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>com.jayway.awaitility</groupId>
<artifactId>awaitility</artifactId>
<version>${avaitility.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>commons-codec</groupId>
<artifactId>commons-codec</artifactId>
<version>${commons-codec.version}</version>
</dependency>
<dependency>
<groupId>commons-codec</groupId>
<artifactId>commons-codec</artifactId>
<version>${commons-codec.version}</version>
</dependency>
<dependency>
<groupId>org.javamoney</groupId>
<artifactId>moneta</artifactId>
<version>1.1</version>
</dependency>
<dependency>
<groupId>org.javamoney</groupId>
<artifactId>moneta</artifactId>
<version>1.1</version>
</dependency>
<dependency>
<groupId>org.owasp.esapi</groupId>
<artifactId>esapi</artifactId>
<version>2.1.0.1</version>
</dependency>
<dependency>
<groupId>org.owasp.esapi</groupId>
<artifactId>esapi</artifactId>
<version>2.1.0.1</version>
</dependency>
<dependency>
<groupId>com.sun.messaging.mq</groupId>
<artifactId>fscontext</artifactId>
<version>${fscontext.version}</version>
</dependency>
<dependency>
<groupId>com.codepoetics</groupId>
<artifactId>protonpack</artifactId>
<version>${protonpack.version}</version>
</dependency>
<dependency>
<groupId>one.util</groupId>
<artifactId>streamex</artifactId>
<version>${streamex.version}</version>
</dependency>
<dependency>
<groupId>com.sun.messaging.mq</groupId>
<artifactId>fscontext</artifactId>
<version>${fscontext.version}</version>
</dependency>
<dependency>
<groupId>com.codepoetics</groupId>
<artifactId>protonpack</artifactId>
<version>${protonpack.version}</version>
</dependency>
<dependency>
<groupId>one.util</groupId>
<artifactId>streamex</artifactId>
<version>${streamex.version}</version>
</dependency>
<dependency>
<groupId>io.vavr</groupId>
<artifactId>vavr</artifactId>
<version>${vavr.version}</version>
</dependency>
<dependency>
<groupId>org.openjdk.jmh</groupId>
<artifactId>jmh-core</artifactId>
<version>1.19</version>
</dependency>
<dependency>
<groupId>org.openjdk.jmh</groupId>
<artifactId>jmh-generator-annprocess</artifactId>
<version>1.19</version>
</dependency>
</dependencies>
<dependency>
<groupId>org.openjdk.jmh</groupId>
<artifactId>jmh-core</artifactId>
<version>1.19</version>
</dependency>
<dependency>
<groupId>org.openjdk.jmh</groupId>
<artifactId>jmh-generator-annprocess</artifactId>
<version>1.19</version>
</dependency>
</dependencies>
<build>
<finalName>core-java</finalName>
<resources>
<resource>
<directory>src/main/resources</directory>
<filtering>true</filtering>
</resource>
</resources>
<build>
<finalName>core-java</finalName>
<resources>
<resource>
<directory>src/main/resources</directory>
<filtering>true</filtering>
</resource>
</resources>
<plugins>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>${maven-compiler-plugin.version}</version>
<configuration>
<source>1.8</source>
<target>1.8</target>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>${maven-compiler-plugin.version}</version>
<configuration>
<source>1.8</source>
<target>1.8</target>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<configuration>
<excludes>
<exclude>**/*IntegrationTest.java</exclude>
<exclude>**/*LongRunningUnitTest.java</exclude>
<exclude>**/*ManualTest.java</exclude>
</excludes>
<testFailureIgnore>true</testFailureIgnore>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<configuration>
<excludes>
<exclude>**/*IntegrationTest.java</exclude>
<exclude>**/*LongRunningUnitTest.java</exclude>
<exclude>**/*ManualTest.java</exclude>
</excludes>
<testFailureIgnore>true</testFailureIgnore>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-dependency-plugin</artifactId>
<executions>
<execution>
<id>copy-dependencies</id>
<phase>prepare-package</phase>
<goals>
<goal>copy-dependencies</goal>
</goals>
<configuration>
<outputDirectory>${project.build.directory}/libs</outputDirectory>
</configuration>
</execution>
</executions>
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<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>${project.build.directory}/libs</outputDirectory>
</configuration>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-jar-plugin</artifactId>
<configuration>
<archive>
<manifest>
<addClasspath>true</addClasspath>
<classpathPrefix>libs/</classpathPrefix>
<mainClass>org.baeldung.executable.ExecutableMavenJar</mainClass>
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<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-jar-plugin</artifactId>
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<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-assembly-plugin</artifactId>
<executions>
<execution>
<phase>package</phase>
<goals>
<goal>single</goal>
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<descriptorRefs>
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<artifactId>maven-shade-plugin</artifactId>
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<transformers>
<transformer
implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
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<artifactId>maven-shade-plugin</artifactId>
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<transformers>
<transformer
implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
<mainClass>org.baeldung.executable.ExecutableMavenJar</mainClass>
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<plugin>
<groupId>com.jolira</groupId>
<artifactId>onejar-maven-plugin</artifactId>
<executions>
<execution>
<configuration>
<mainClass>org.baeldung.executable.ExecutableMavenJar</mainClass>
<attachToBuild>true</attachToBuild>
<filename>${project.build.finalName}-onejar.${project.packaging}</filename>
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<goals>
<goal>one-jar</goal>
</goals>
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<plugin>
<groupId>com.jolira</groupId>
<artifactId>onejar-maven-plugin</artifactId>
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<execution>
<configuration>
<mainClass>org.baeldung.executable.ExecutableMavenJar</mainClass>
<attachToBuild>true</attachToBuild>
<filename>${project.build.finalName}-onejar.${project.packaging}</filename>
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<goals>
<goal>one-jar</goal>
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<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
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<goals>
<goal>repackage</goal>
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<configuration>
<classifier>spring-boot</classifier>
<mainClass>org.baeldung.executable.ExecutableMavenJar</mainClass>
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<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<executions>
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<goals>
<goal>repackage</goal>
</goals>
<configuration>
<classifier>spring-boot</classifier>
<mainClass>org.baeldung.executable.ExecutableMavenJar</mainClass>
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<groupId>org.codehaus.mojo</groupId>
<artifactId>exec-maven-plugin</artifactId>
<version>1.6.0</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>
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<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>exec-maven-plugin</artifactId>
<executions>
<execution>
<id>run-benchmarks</id>
<phase>integration-test</phase>
<goals>
<goal>exec</goal>
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<configuration>
<classpathScope>test</classpathScope>
<executable>java</executable>
<arguments>
<argument>-classpath</argument>
<classpath />
<argument>org.openjdk.jmh.Main</argument>
<argument>.*</argument>
</arguments>
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<plugin>
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<artifactId>exec-maven-plugin</artifactId>
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<configuration>
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<mainClass>com.baeldung.outofmemoryerror.OutOfMemoryGCLimitExceed</mainClass>
<arguments>
<argument>-Xmx300m</argument>
<argument>-XX:+UseParallelGC</argument>
<argument>-classpath</argument>
<classpath />
<argument>com.baeldung.outofmemoryerror.OutOfMemoryGCLimitExceed</argument>
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<groupId>org.codehaus.mojo</groupId>
<artifactId>exec-maven-plugin</artifactId>
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<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>
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<configuration>
<excludes>
<exclude>**/*ManualTest.java</exclude>
</excludes>
<includes>
<include>**/*IntegrationTest.java</include>
</includes>
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<configuration>
<systemPropertyVariables>
<test.mime>json</test.mime>
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<executions>
<execution>
<id>run-benchmarks</id>
<phase>integration-test</phase>
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<goal>exec</goal>
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<executable>java</executable>
<arguments>
<argument>-classpath</argument>
<classpath />
<argument>org.openjdk.jmh.Main</argument>
<argument>.*</argument>
</arguments>
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</execution>
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<properties>
<!-- marshalling -->
<jackson.version>2.8.5</jackson.version>
</build>
<!-- logging -->
<org.slf4j.version>1.7.21</org.slf4j.version>
<logback.version>1.1.7</logback.version>
<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>
<excludes>
<exclude>**/*ManualTest.java</exclude>
</excludes>
<includes>
<include>**/*IntegrationTest.java</include>
</includes>
</configuration>
</execution>
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<configuration>
<systemPropertyVariables>
<test.mime>json</test.mime>
</systemPropertyVariables>
</configuration>
</plugin>
</plugins>
</build>
</profile>
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<!-- util -->
<guava.version>22.0</guava.version>
<commons-lang3.version>3.5</commons-lang3.version>
<bouncycastle.version>1.55</bouncycastle.version>
<commons-codec.version>1.10</commons-codec.version>
<commons-math3.version>3.6.1</commons-math3.version>
<decimal4j.version>1.0.3</decimal4j.version>
<commons-io.version>2.5</commons-io.version>
<commons-collections4.version>4.1</commons-collections4.version>
<collections-generic.version>4.01</collections-generic.version>
<unix4j.version>0.4</unix4j.version>
<grep4j.version>1.8.7</grep4j.version>
<lombok.version>1.16.12</lombok.version>
<fscontext.version>4.6-b01</fscontext.version>
<protonpack.version>1.13</protonpack.version>
<streamex.version>0.6.5</streamex.version>
<vavr.version>0.9.0</vavr.version>
<properties>
<!-- marshalling -->
<jackson.version>2.8.5</jackson.version>
<!-- testing -->
<org.hamcrest.version>1.3</org.hamcrest.version>
<junit.version>4.12</junit.version>
<mockito.version>2.8.9</mockito.version>
<assertj.version>3.6.1</assertj.version>
<avaitility.version>1.7.0</avaitility.version>
<!-- logging -->
<org.slf4j.version>1.7.21</org.slf4j.version>
<logback.version>1.1.7</logback.version>
<!-- util -->
<guava.version>22.0</guava.version>
<commons-lang3.version>3.5</commons-lang3.version>
<bouncycastle.version>1.55</bouncycastle.version>
<commons-codec.version>1.10</commons-codec.version>
<commons-math3.version>3.6.1</commons-math3.version>
<decimal4j.version>1.0.3</decimal4j.version>
<commons-io.version>2.5</commons-io.version>
<commons-collections4.version>4.1</commons-collections4.version>
<collections-generic.version>4.01</collections-generic.version>
<unix4j.version>0.4</unix4j.version>
<grep4j.version>1.8.7</grep4j.version>
<lombok.version>1.16.12</lombok.version>
<fscontext.version>4.6-b01</fscontext.version>
<protonpack.version>1.13</protonpack.version>
<streamex.version>0.6.5</streamex.version>
<!-- testing -->
<org.hamcrest.version>1.3</org.hamcrest.version>
<junit.version>4.12</junit.version>
<mockito.version>2.8.9</mockito.version>
<assertj.version>3.6.1</assertj.version>
<avaitility.version>1.7.0</avaitility.version>
<!-- maven plugins -->
<maven-compiler-plugin.version>3.6.0</maven-compiler-plugin.version>
<maven-surefire-plugin.version>2.19.1</maven-surefire-plugin.version>
</properties>
<!-- maven plugins -->
<maven-compiler-plugin.version>3.6.0</maven-compiler-plugin.version>
<maven-surefire-plugin.version>2.19.1</maven-surefire-plugin.version>
</properties>
</project>
+57 -121
View File
@@ -1,131 +1,67 @@
package com.baeldung.numberofdigits;
import static com.baeldung.designpatterns.util.LogerUtil.LOG;;
import java.io.IOException;
import java.util.concurrent.TimeUnit;
public class Benchmarking {;
private static final int LOWER_BOUND = 1;
private static final int UPPER_BOUND = 999999999;
public static void main(String[] args) {
LOG.info("Testing all methods...");
long length = test_stringBasedSolution();
LOG.info("String Based Solution : " + length);
length = test_logarithmicApproach();
LOG.info("Logarithmic Approach : " + length);
length = test_repeatedMultiplication();
LOG.info("Repeated Multiplication : " + length);
length = test_shiftOperators();
LOG.info("Shift Operators : " + length);
length = test_dividingWithPowersOf2();
LOG.info("Dividing with Powers of 2 : " + length);
length = test_divideAndConquer();
LOG.info("Divide And Conquer : " + length);
import org.openjdk.jmh.annotations.Benchmark;
import org.openjdk.jmh.annotations.BenchmarkMode;
import org.openjdk.jmh.annotations.Mode;
import org.openjdk.jmh.annotations.OutputTimeUnit;
import org.openjdk.jmh.annotations.Scope;
import org.openjdk.jmh.annotations.State;
import org.openjdk.jmh.runner.RunnerException;
public class Benchmarking {
public static void main(String[] args) throws RunnerException, IOException {
org.openjdk.jmh.Main.main(args);
}
private static long test_stringBasedSolution() {
long startTime, stopTime, elapsedTime;
startTime = System.currentTimeMillis();
int total = 0;
for (int i = LOWER_BOUND; i <= UPPER_BOUND; i++) {
total += NumberOfDigits.stringBasedSolution(i);
}
stopTime = System.currentTimeMillis();
elapsedTime = stopTime - startTime;
return elapsedTime;
}
private static long test_logarithmicApproach() {
long startTime, stopTime, elapsedTime;
startTime = System.currentTimeMillis();
int total = 0;
for (int i = LOWER_BOUND; i <= UPPER_BOUND; i++) {
total += NumberOfDigits.logarithmicApproach(i);
}
stopTime = System.currentTimeMillis();
elapsedTime = stopTime - startTime;
return elapsedTime;
}
private static long test_repeatedMultiplication() {
long startTime, stopTime, elapsedTime;
startTime = System.currentTimeMillis();
int total = 0;
for (int i = LOWER_BOUND; i <= UPPER_BOUND; i++) {
total += NumberOfDigits.repeatedMultiplication(i);
}
stopTime = System.currentTimeMillis();
elapsedTime = stopTime - startTime;
return elapsedTime;
}
private static long test_shiftOperators() {
long startTime, stopTime, elapsedTime;
startTime = System.currentTimeMillis();
int total = 0;
for (int i = LOWER_BOUND; i <= UPPER_BOUND; i++) {
total += NumberOfDigits.shiftOperators(i);
}
stopTime = System.currentTimeMillis();
elapsedTime = stopTime - startTime;
return elapsedTime;
}
private static long test_dividingWithPowersOf2() {
long startTime, stopTime, elapsedTime;
startTime = System.currentTimeMillis();
int total = 0;
for (int i = LOWER_BOUND; i <= UPPER_BOUND; i++) {
total += NumberOfDigits.dividingWithPowersOf2(i);
}
stopTime = System.currentTimeMillis();
elapsedTime = stopTime - startTime;
return elapsedTime;
}
private static long test_divideAndConquer() {
long startTime, stopTime, elapsedTime;
startTime = System.currentTimeMillis();
int total = 0;
for (int i = LOWER_BOUND; i <= UPPER_BOUND; i++) {
total += NumberOfDigits.divideAndConquer(i);
}
stopTime = System.currentTimeMillis();
elapsedTime = stopTime - startTime;
return elapsedTime;
@State(Scope.Thread)
public static class ExecutionPlan {
public int number = Integer.MAX_VALUE;
public int length = 0;
public NumberOfDigits numberOfDigits= new NumberOfDigits();
}
@Benchmark
@BenchmarkMode(Mode.AverageTime)
@OutputTimeUnit(TimeUnit.NANOSECONDS)
public void stringBasedSolution(ExecutionPlan plan) {
plan.length = plan.numberOfDigits.stringBasedSolution(plan.number);
}
@Benchmark
@BenchmarkMode(Mode.AverageTime)
@OutputTimeUnit(TimeUnit.NANOSECONDS)
public void logarithmicApproach(ExecutionPlan plan) {
plan.length = plan.numberOfDigits.logarithmicApproach(plan.number);
}
@Benchmark
@BenchmarkMode(Mode.AverageTime)
@OutputTimeUnit(TimeUnit.NANOSECONDS)
public void repeatedMultiplication(ExecutionPlan plan) {
plan.length = plan.numberOfDigits.repeatedMultiplication(plan.number);
}
@Benchmark
@BenchmarkMode(Mode.AverageTime)
@OutputTimeUnit(TimeUnit.NANOSECONDS)
public void shiftOperators(ExecutionPlan plan) {
plan.length = plan.numberOfDigits.shiftOperators(plan.number);
}
@Benchmark
@BenchmarkMode(Mode.AverageTime)
@OutputTimeUnit(TimeUnit.NANOSECONDS)
public void dividingWithPowersOf2(ExecutionPlan plan) {
plan.length = plan.numberOfDigits.dividingWithPowersOf2(plan.number);
}
@Benchmark
@BenchmarkMode(Mode.AverageTime)
@OutputTimeUnit(TimeUnit.NANOSECONDS)
public void divideAndConquer(ExecutionPlan plan) {
plan.length = plan.numberOfDigits.divideAndConquer(plan.number);
}
}
+6 -6
View File
@@ -1,17 +1,17 @@
package com.baeldung.numberofdigits;
public class NumberOfDigits {
public static int stringBasedSolution(int number) {
public int stringBasedSolution(int number) {
int length = String.valueOf(number).length();
return length;
}
public static int logarithmicApproach(int number) {
public int logarithmicApproach(int number) {
int length = (int) Math.log10(number) + 1;
return length;
}
public static int repeatedMultiplication(int number) {
public int repeatedMultiplication(int number) {
int length = 0;
long temp = 1;
while(temp <= number) {
@@ -21,7 +21,7 @@ public class NumberOfDigits {
return length;
}
public static int shiftOperators(int number) {
public int shiftOperators(int number) {
int length = 0;
long temp = 1;
while(temp <= number) {
@@ -31,7 +31,7 @@ public class NumberOfDigits {
return length;
}
public static int dividingWithPowersOf2(int number) {
public int dividingWithPowersOf2(int number) {
int length = 1;
if (number >= 100000000) {
length += 8;
@@ -51,7 +51,7 @@ public class NumberOfDigits {
return length;
}
public static int divideAndConquer(int number) {
public int divideAndConquer(int number) {
if (number < 100000){
// 5 digits or less
if (number < 100){
+33 -27
View File
@@ -1,27 +1,33 @@
package com.baeldung.numberofdigits;
import static com.baeldung.designpatterns.util.LogerUtil.LOG;
public class NumberOfDigitsDriver {
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);
}
}
package com.baeldung.numberofdigits;
import static com.baeldung.designpatterns.util.LogerUtil.LOG;
public class NumberOfDigitsDriver {
private static NumberOfDigits numberOfDigits;
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);
}
}
@@ -0,0 +1,23 @@
package com.baeldung.sneakythrows;
import lombok.SneakyThrows;
public class SneakyRunnable implements Runnable {
@SneakyThrows
public void run() {
try {
throw new InterruptedException();
} catch (InterruptedException e) {
e.printStackTrace();
}
}
public static void main(String[] args) {
try {
new SneakyRunnable().run();
} catch (Exception e) {
e.printStackTrace();
}
}
}
@@ -0,0 +1,25 @@
package com.baeldung.sneakythrows;
import java.io.IOException;
public class SneakyThrows {
public static <E extends Throwable> void sneakyThrow(Throwable e) throws E {
throw (E) e;
}
public static void throwsSneakyIOException() {
sneakyThrow(new IOException("sneaky"));
}
public static void main(String[] args) {
try {
throwsSneakyIOException();
} catch (Exception ex) {
ex.printStackTrace();
}
}
}
@@ -7,31 +7,56 @@ import java.util.stream.IntStream;
import com.codepoetics.protonpack.Indexed;
import com.codepoetics.protonpack.StreamUtils;
import io.vavr.collection.Stream;
import one.util.streamex.EntryStream;
public class StreamIndices {
public static List<String> getEvenIndexedStrings(String[] names) {
List<String> evenIndexedNames = IntStream.range(0, names.length)
.filter(i -> i % 2 == 0).mapToObj(i -> names[i])
.collect(Collectors.toList());
.filter(i -> i % 2 == 0)
.mapToObj(i -> names[i])
.collect(Collectors.toList());
return evenIndexedNames;
}
public List<String> getEvenIndexedStringsVersionTwo(List<String> names) {
List<String> evenIndexedNames = EntryStream.of(names)
.filterKeyValue((index, name) -> index % 2 == 0)
.values()
.toList();
return evenIndexedNames;
}
public static List<Indexed<String>> getEvenIndexedStrings(List<String> names) {
List<Indexed<String>> list = StreamUtils.zipWithIndex(names.stream())
.filter(i -> i.getIndex() % 2 == 0).collect(Collectors.toList());
.filter(i -> i.getIndex() % 2 == 0)
.collect(Collectors.toList());
return list;
}
public static List<Indexed<String>> getOddIndexedStrings(List<String> names) {
List<Indexed<String>> list = StreamUtils.zipWithIndex(names.stream())
.filter(i -> i.getIndex() % 2 == 1).collect(Collectors.toList());
.filter(i -> i.getIndex() % 2 == 1)
.collect(Collectors.toList());
return list;
}
public static List<String> getOddIndexedStrings(String[] names) {
List<String> oddIndexedNames = IntStream.range(0, names.length)
.filter(i -> i % 2 == 1).mapToObj(i -> names[i])
.collect(Collectors.toList());
.filter(i -> i % 2 == 1)
.mapToObj(i -> names[i])
.collect(Collectors.toList());
return oddIndexedNames;
}
public static List<String> getOddIndexedStringsVersionTwo(String[] names) {
List<String> oddIndexedNames = Stream.of(names)
.zipWithIndex()
.filter(tuple -> tuple._2 % 2 == 1)
.map(tuple -> tuple._1)
.toJavaList();
return oddIndexedNames;
}
}
View File
@@ -9,7 +9,13 @@ import org.junit.runner.RunWith;
@RunWith(Theories.class)
public class NumberOfDigitsIntegrationTest {
private static NumberOfDigits numberOfDigits;
static {
numberOfDigits = new NumberOfDigits();
}
@DataPoints
public static int[][] lowestIntegers()
{
@@ -64,37 +70,37 @@ public class NumberOfDigitsIntegrationTest {
@Theory
public void givenDataPoints_whenStringBasedSolutionInvoked_thenAllPointsMatch(final int[] entry) {
Assume.assumeTrue(entry[0] > 0 && entry[1] > 0);
Assert.assertEquals(entry[0], NumberOfDigits.stringBasedSolution(entry[1]));
Assert.assertEquals(entry[0], numberOfDigits.stringBasedSolution(entry[1]));
}
@Theory
public void givenDataPoints_whenLogarithmicApproachInvoked_thenAllPointsMatch(final int[] entry) {
Assume.assumeTrue(entry[0] > 0 && entry[1] > 0);
Assert.assertEquals(entry[0], NumberOfDigits.logarithmicApproach(entry[1]));
Assert.assertEquals(entry[0], numberOfDigits.logarithmicApproach(entry[1]));
}
@Theory
public void givenDataPoints_whenRepeatedMultiplicationInvoked_thenAllPointsMatch(final int[] entry) {
Assume.assumeTrue(entry[0] > 0 && entry[1] > 0);
Assert.assertEquals(entry[0], NumberOfDigits.repeatedMultiplication(entry[1]));
Assert.assertEquals(entry[0], numberOfDigits.repeatedMultiplication(entry[1]));
}
@Theory
public void givenDataPoints_whenShiftOperatorsInvoked_thenAllPointsMatch(final int[] entry) {
Assume.assumeTrue(entry[0] > 0 && entry[1] > 0);
Assert.assertEquals(entry[0], NumberOfDigits.shiftOperators(entry[1]));
Assert.assertEquals(entry[0], numberOfDigits.shiftOperators(entry[1]));
}
@Theory
public void givenDataPoints_whenDividingWithPowersOf2Invoked_thenAllPointsMatch(final int[] entry) {
Assume.assumeTrue(entry[0] > 0 && entry[1] > 0);
Assert.assertEquals(entry[0], NumberOfDigits.dividingWithPowersOf2(entry[1]));
Assert.assertEquals(entry[0], numberOfDigits.dividingWithPowersOf2(entry[1]));
}
@Theory
public void givenDataPoints_whenDivideAndConquerInvoked_thenAllPointsMatch(final int[] entry) {
Assume.assumeTrue(entry[0] > 0 && entry[1] > 0);
Assert.assertEquals(entry[0], NumberOfDigits.divideAndConquer(entry[1]));
Assert.assertEquals(entry[0], numberOfDigits.divideAndConquer(entry[1]));
}
}
@@ -0,0 +1,17 @@
package com.baeldung.sneakythrows;
import org.junit.Test;
import static junit.framework.TestCase.assertEquals;
public class SneakyRunnableTest {
@Test
public void whenCallSneakyRunnableMethod_thenThrowException() {
try {
new SneakyRunnable().run();
} catch (Exception e) {
assertEquals(InterruptedException.class, e.getStackTrace());
}
}
}
@@ -0,0 +1,18 @@
package com.baeldung.sneakythrows;
import org.junit.Test;
import static junit.framework.TestCase.assertEquals;
public class SneakyThrowsTest {
@Test
public void whenCallSneakyMethod_thenThrowSneakyException() {
try {
SneakyThrows.throwsSneakyIOException();
} catch (Exception ex) {
assertEquals("sneaky", ex.getMessage().toString());
}
}
}
@@ -20,6 +20,15 @@ public class StreamIndicesTest {
assertEquals(expectedResult, actualResult);
}
@Test
public void givenArray_whenGetIndexedStrings_thenReturnListOfEvenIndexedStringsVersionTwo() {
String[] names = { "Afrim", "Bashkim", "Besim", "Lulzim", "Durim", "Shpetim" };
List<String> expectedResult = Arrays.asList("Afrim", "Besim", "Durim");
List<String> actualResult = StreamIndices.getEvenIndexedStrings(names);
assertEquals(expectedResult, actualResult);
}
@Test
public void givenArray_whenGetIndexedStrings_thenReturnListOfOddStrings() {
String[] names = { "Afrim", "Bashkim", "Besim", "Lulzim", "Durim", "Shpetim" };
@@ -47,4 +56,13 @@ public class StreamIndicesTest {
assertEquals(expectedResult, actualResult);
}
@Test
public void givenArray_whenGetIndexedStrings_thenReturnListOfOddStringsVersionTwo() {
String[] names = { "Afrim", "Bashkim", "Besim", "Lulzim", "Durim", "Shpetim" };
List<String> expectedResult = Arrays.asList("Bashkim", "Lulzim", "Shpetim");
List<String> actualResult = StreamIndices.getOddIndexedStringsVersionTwo(names);
assertEquals(expectedResult, actualResult);
}
}