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merge into: iSharkFly-Open/Java-Tutorials:assertion
Branches Tags
iSharkFly-Open/Java-Tutorials:main iSharkFly-Open/Java-Tutorials:log iSharkFly-Open/Java-Tutorials:apache iSharkFly-Open/Java-Tutorials:persistence-modules iSharkFly-Open/Java-Tutorials:core-java-strings iSharkFly-Open/Java-Tutorials:assertion
..
pull from: iSharkFly-Open/Java-Tutorials:core-java-strings
Branches Tags
iSharkFly-Open/Java-Tutorials:main iSharkFly-Open/Java-Tutorials:log iSharkFly-Open/Java-Tutorials:apache iSharkFly-Open/Java-Tutorials:persistence-modules iSharkFly-Open/Java-Tutorials:core-java-strings iSharkFly-Open/Java-Tutorials:assertion
29 Commits
assertion .. core-java-strings
Author SHA1 Message Date
YuCheng Hu 27af9e2f8c Submit all code for code-java-string branch 2022-07-15 13:10:35 -04:00
YuCheng Hu c6df8af1e0 测试 JDK 9 的字符串压缩 2022-07-05 10:15:52 -04:00
YuCheng Hu b9bf30f350 - [Java 9 中的字符串（String）压缩](https://www.ossez.com/t/java-9-string/14024) 2022-07-05 10:14:24 -04:00
YuCheng Hu 08abc1855a - [Java 9 中的字符串（String）压缩](https://www.ossez.com/t/java-9-string/14024) 2022-07-02 09:27:40 -04:00
YuCheng Hu 25cff75966 更新有关 Java 注解的文章 2022-07-01 17:48:25 -04:00
YuCheng Hu c56e58379a https://www.ossez.com/t/topic/14022 编程常用的几种字符编码 2022-07-01 16:59:57 -04:00
YuCheng Hu 0803488d88 更新 Java String 有关的文章链接 2022-06-29 19:56:57 -04:00
YuCheng Hu b7d0d45f28 添加 Java 中的 String Pool 简介 内容 2022-06-20 17:26:15 -04:00
YuCheng Hu de42646567 格式化输入和输出 2022-06-20 10:46:59 -04:00
YuCheng Hu 61bb6834e6 更新文章 Java 使用 char[] Array 还是 String 存储字符串 的链接 https://www.ossez.com/t/java-char-array-string/14015 2022-06-20 01:09:08 -04:00
YuCheng Hu ed00ae8a6b 添加理解 Java 中的 NumberFormatException 异常 的链接 2022-06-20 01:07:33 -04:00
YuCheng Hu ad2ca48135 更新测试文件注释和文章的内容链接 2022-06-20 01:07:12 -04:00
YuCheng Hu ed4af4389d 添加理解 Java 中的 NumberFormatException 异常 的链接 2022-06-20 01:05:35 -04:00
YuCheng Hu 85b63c6f8d 修改数字格式化异常的内容 2022-06-20 01:03:51 -04:00
YuCheng Hu f08da063e7 尝试触发下 CI 的编译 2022-06-19 09:33:57 -04:00
honeymoose 5b3ef027b1 Merge pull request 'ci' (#39) from ci into main 
Reviewed-on: https://src.ossez.com/cwiki-us-docs/java-tutorials/pulls/39
 2022-06-18 07:41:52 -04:00
YuCheng Hu 6926189ba0 修改项目的编译错误 2022-06-17 14:32:41 -04:00
YuCheng Hu abf6ebb6e5 <commons-exec.version>1.3</commons-exec.version> 2022-06-17 14:29:02 -04:00
YuCheng Hu f50cfa7686 尝试推送后触发 CI 构建 2022-06-17 14:23:45 -04:00
YuCheng Hu 5523c5fe67 修改构建错误 2022-06-17 14:16:51 -04:00
YuCheng Hu c63d207c77 修改 install 为 package 进行编译 2022-06-17 13:38:17 -04:00
YuCheng Hu 173bb5ef7d 更新 POM.xml 文件能够让构建顺利进行 2022-06-17 13:06:51 -04:00
YuCheng Hu f2200288e7 maven 3.8.4 2022-06-17 12:53:19 -04:00
YuCheng Hu f731671503 WorkflowScript: 5: Tool type "maven" does not have an install of "Maven 3.8.6" configured - did you mean "maven 3.8.4"? @ line 5, column 15. 
maven 'Maven 3.8.6'
                 ^

WorkflowScript: 6: Tool type "jdk" does not have an install of "jdk11" configured - did you mean "OpenJDK-11"? @ line 6, column 13.
           jdk 'jdk11'
               ^
 2022-06-17 12:52:08 -04:00
YuCheng Hu be05ebb0d3 add tools for Jenkinsfile 2022-06-17 12:51:11 -04:00
YuCheng Hu f0cf866d20 Add steps for mvn build 2022-06-17 12:44:29 -04:00
YuCheng Hu 3c9061cc47 Merge remote-tracking branch 'origin/main' into ci 2022-06-17 12:36:12 -04:00
YuCheng Hu a709139646 添加 Jenkins 的构建文件 2022-06-17 10:47:43 -04:00
YuCheng Hu d66dad8fae 更新错误的 README.md 文件排版格式 2022-06-14 18:14:27 -04:00
107 changed files with 3379 additions and 100 deletions
Expand all files Collapse all files
.idea/compiler.xml
Generated
+38
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@@ -0,0 +1,38 @@
<?xml version="1.0" encoding="UTF-8"?>
<project version="4">
<component name="CompilerConfiguration">
<annotationProcessing>
<profile default="true" name="Default" enabled="true" />
<profile name="Maven default annotation processors profile" enabled="true">
<sourceOutputDir name="target/generated-sources/annotations" />
<sourceTestOutputDir name="target/generated-test-sources/test-annotations" />
<outputRelativeToContentRoot value="true" />
<module name="codebank" />
<module name="core-java-collections-list" />
<module name="core-java-streams" />
<module name="assertion-libraries" />
<module name="core-java-io" />
<module name="core-java-annotations" />
<module name="core-java-8-2" />
<module name="core-java-numbers" />
<module name="discourse" />
<module name="core-java-11-2" />
<module name="core-java-strings" />
<module name="core-java-11" />
<module name="core-java-collections-list-2" />
<module name="core-java-collections" />
<module name="core-java-datetime-conversion" />
<module name="core-java-collections-list-3" />
<module name="core-java-8" />
<module name="junit-5-basics" />
<module name="core-java-collections-3" />
<module name="core-java-collections-2" />
</profile>
</annotationProcessing>
</component>
<component name="JavacSettings">
<option name="ADDITIONAL_OPTIONS_OVERRIDE">
<module name="core-java-streams" options="-parameters" />
</option>
</component>
</project>
.idea/encodings.xml
Generated
+52
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@@ -0,0 +1,52 @@
<?xml version="1.0" encoding="UTF-8"?>
<project version="4">
<component name="Encoding">
<file url="file://$PROJECT_DIR$/core-java-modules/core-java-11-2/src/main/java" charset="UTF-8" />
<file url="file://$PROJECT_DIR$/core-java-modules/core-java-11-2/src/main/resources" charset="UTF-8" />
<file url="file://$PROJECT_DIR$/core-java-modules/core-java-11/src/main/java" charset="UTF-8" />
<file url="file://$PROJECT_DIR$/core-java-modules/core-java-11/src/main/resources" charset="UTF-8" />
<file url="file://$PROJECT_DIR$/core-java-modules/core-java-8-2/src/main/java" charset="UTF-8" />
<file url="file://$PROJECT_DIR$/core-java-modules/core-java-8-2/src/main/resources" charset="UTF-8" />
<file url="file://$PROJECT_DIR$/core-java-modules/core-java-8/src/main/java" charset="UTF-8" />
<file url="file://$PROJECT_DIR$/core-java-modules/core-java-8/src/main/resources" charset="UTF-8" />
<file url="file://$PROJECT_DIR$/core-java-modules/core-java-annotations/src/main/java" charset="UTF-8" />
<file url="file://$PROJECT_DIR$/core-java-modules/core-java-annotations/src/main/resources" charset="UTF-8" />
<file url="file://$PROJECT_DIR$/core-java-modules/core-java-collections-2/src/main/java" charset="UTF-8" />
<file url="file://$PROJECT_DIR$/core-java-modules/core-java-collections-2/src/main/resources" charset="UTF-8" />
<file url="file://$PROJECT_DIR$/core-java-modules/core-java-collections-3/src/main/java" charset="UTF-8" />
<file url="file://$PROJECT_DIR$/core-java-modules/core-java-collections-3/src/main/resources" charset="UTF-8" />
<file url="file://$PROJECT_DIR$/core-java-modules/core-java-collections-list-2/src/main/java" charset="UTF-8" />
<file url="file://$PROJECT_DIR$/core-java-modules/core-java-collections-list-2/src/main/resources" charset="UTF-8" />
<file url="file://$PROJECT_DIR$/core-java-modules/core-java-collections-list-3/src/main/java" charset="UTF-8" />
<file url="file://$PROJECT_DIR$/core-java-modules/core-java-collections-list-3/src/main/resources" charset="UTF-8" />
<file url="file://$PROJECT_DIR$/core-java-modules/core-java-collections-list/src/main/java" charset="UTF-8" />
<file url="file://$PROJECT_DIR$/core-java-modules/core-java-collections-list/src/main/resources" charset="UTF-8" />
<file url="file://$PROJECT_DIR$/core-java-modules/core-java-collections/src/main/java" charset="UTF-8" />
<file url="file://$PROJECT_DIR$/core-java-modules/core-java-collections/src/main/resources" charset="UTF-8" />
<file url="file://$PROJECT_DIR$/core-java-modules/core-java-datetime-conversion/src/main/java" charset="UTF-8" />
<file url="file://$PROJECT_DIR$/core-java-modules/core-java-datetime-conversion/src/main/resources" charset="UTF-8" />
<file url="file://$PROJECT_DIR$/core-java-modules/core-java-io/src/main/java" charset="UTF-8" />
<file url="file://$PROJECT_DIR$/core-java-modules/core-java-io/src/main/resources" charset="UTF-8" />
<file url="file://$PROJECT_DIR$/core-java-modules/core-java-numbers/src/main/java" charset="UTF-8" />
<file url="file://$PROJECT_DIR$/core-java-modules/core-java-numbers/src/main/resources" charset="UTF-8" />
<file url="file://$PROJECT_DIR$/core-java-modules/core-java-streams/src/main/java" charset="UTF-8" />
<file url="file://$PROJECT_DIR$/core-java-modules/core-java-streams/src/main/resources" charset="UTF-8" />
<file url="file://$PROJECT_DIR$/core-java-modules/core-java-strings/src/main/java" charset="UTF-8" />
<file url="file://$PROJECT_DIR$/core-java-modules/core-java-strings/src/main/resources" charset="UTF-8" />
<file url="file://$PROJECT_DIR$/core-java-modules/src/main/java" charset="UTF-8" />
<file url="file://$PROJECT_DIR$/core-java-modules/src/main/resources" charset="UTF-8" />
<file url="file://$PROJECT_DIR$/src/main/java" charset="UTF-8" />
<file url="file://$PROJECT_DIR$/src/main/resources" charset="UTF-8" />
<file url="file://$PROJECT_DIR$/testing-modules/assertion-libraries/src/main/java" charset="UTF-8" />
<file url="file://$PROJECT_DIR$/testing-modules/assertion-libraries/src/main/resources" charset="UTF-8" />
<file url="file://$PROJECT_DIR$/testing-modules/junit-5-basics/src/main/java" charset="UTF-8" />
<file url="file://$PROJECT_DIR$/testing-modules/junit-5-basics/src/main/resources" charset="UTF-8" />
<file url="file://$PROJECT_DIR$/testing-modules/junit-5-basics/src/test/resources" charset="UTF-8" />
<file url="file://$PROJECT_DIR$/testing-modules/src/main/java" charset="UTF-8" />
<file url="file://$PROJECT_DIR$/testing-modules/src/main/resources" charset="UTF-8" />
<file url="file://$PROJECT_DIR$/toolkits/codebank/src/main/java" charset="UTF-8" />
<file url="file://$PROJECT_DIR$/toolkits/codebank/src/main/resources" charset="UTF-8" />
<file url="file://$PROJECT_DIR$/toolkits/discourse/src/main/java" charset="UTF-8" />
<file url="file://$PROJECT_DIR$/toolkits/discourse/src/main/resources" charset="UTF-8" />
</component>
</project>
.idea/jarRepositories.xml
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+20
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<?xml version="1.0" encoding="UTF-8"?>
<project version="4">
<component name="RemoteRepositoriesConfiguration">
<remote-repository>
<option name="id" value="central" />
<option name="name" value="Central Repository" />
<option name="url" value="https://repo.maven.apache.org/maven2" />
</remote-repository>
<remote-repository>
<option name="id" value="central" />
<option name="name" value="Maven Central repository" />
<option name="url" value="https://repo1.maven.org/maven2" />
</remote-repository>
<remote-repository>
<option name="id" value="jboss.community" />
<option name="name" value="JBoss Community repository" />
<option name="url" value="https://repository.jboss.org/nexus/content/repositories/public/" />
</remote-repository>
</component>
</project>
.idea/thriftCompiler.xml
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+6
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@@ -0,0 +1,6 @@
<?xml version="1.0" encoding="UTF-8"?>
<project version="4">
<component name="ThriftCompiler">
<compilers />
</component>
</project>
.idea/vcs.xml
Generated
+6
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@@ -0,0 +1,6 @@
<?xml version="1.0" encoding="UTF-8"?>
<project version="4">
<component name="VcsDirectoryMappings">
<mapping directory="" vcs="Git" />
</component>
</project>
Jenkinsfile
Vendored
+27
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@@ -0,0 +1,27 @@
pipeline {
agent any
tools {
maven 'maven 3.8.4'
jdk 'OpenJDK-11'
}
stages {
stage('Build') {
steps {
echo 'Building..'
sh 'mvn clean package'
}
}
stage('Test') {
steps {
echo 'Testing..'
}
}
stage('Deploy') {
steps {
echo 'Deploying....'
}
}
}
}
core-java-modules/README.md
+3 -3
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@@ -1,8 +1,8 @@
## Core Java Modules
## Java 核心模块（Core Java）
This module contains modules about core Java
本模块中包含有关 Java 核心（Core Java）有关的内容。
## Relevant articles:
## 相关文章
- [Understanding the NumberFormatException in Java](https://www.baeldung.com/java-number-format-exception)
core-java-modules/core-java-annotations/README.md
+3 -2
View File
@@ -1,6 +1,7 @@
=========
## Annotation（注解）
Java 注解（Annotation）又称 Java 标注，是 JDK5.0 引入的一种注释机制。
## Core Java Cookbooks and Examples
Java 语言中的类、方法、变量、参数和包等都可以被标注。和 Javadoc 不同，Java 标注可以通过反射获取标注内容。在编译器生成类文件时，标注可以被嵌入到字节码中。Java 虚拟机可以保留标注内容，在运行时可以获取到标注内容 。 当然它也支持自定义 Java 标注。
### 相关的文章：
- [Java @Override Annotation](https://www.baeldung.com/java-override)
core-java-modules/core-java-collections-3/pom.xml
+1 -1
View File
@@ -11,7 +11,6 @@
<groupId>com.ossez.core-java-modules</groupId>
<artifactId>core-java-modules</artifactId>
<version>0.0.2-SNAPSHOT</version>
<relativePath>../pom.xml</relativePath>
</parent>
<dependencies>
@@ -34,6 +33,7 @@
<properties>
<jol-core.version>0.10</jol-core.version>
<commons-exec.version>1.3</commons-exec.version>
</properties>
</project>
core-java-modules/core-java-collections-3/src/main/java/com/ossez/collections/arraylistvsvector/ArrayListBenchmark.java
+1 -1
View File
@@ -1,4 +1,4 @@
package com.ossez.collections.collections.arraylistvsvector;
package com.ossez.collections.arraylistvsvector;
import org.openjdk.jmh.annotations.*;
import org.openjdk.jmh.runner.Runner;
core-java-modules/core-java-collections-3/src/main/java/com/ossez/collections/arraylistvsvector/Employee.java
+1 -1
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@@ -1,4 +1,4 @@
package com.ossez.collections.collections.arraylistvsvector;
package com.ossez.collections.arraylistvsvector;
public class Employee {
core-java-modules/core-java-collections-3/src/main/java/com/ossez/collections/arraylistvsvector/VectorExample.java
+1 -1
View File
@@ -1,4 +1,4 @@
package com.ossez.collections.collections.arraylistvsvector;
package com.ossez.collections.arraylistvsvector;
import java.util.Enumeration;
import java.util.Iterator;
core-java-modules/core-java-collections-3/src/main/java/com/ossez/collections/containsperformance/CollectionsBenchmark.java
+1 -1
View File
@@ -1,4 +1,4 @@
package com.ossez.collections.collections.containsperformance;
package com.ossez.collections.containsperformance;
import org.openjdk.jmh.annotations.*;
import org.openjdk.jmh.runner.Runner;
core-java-modules/core-java-collections-3/src/main/java/com/ossez/collections/containsperformance/Employee.java
+1 -1
View File
@@ -1,4 +1,4 @@
package com.ossez.collections.collections.containsperformance;
package com.ossez.collections.containsperformance;
public class Employee {
core-java-modules/core-java-collections-3/src/main/java/com/ossez/collections/iterators/Iterators.java
+1 -1
View File
@@ -1,4 +1,4 @@
package com.ossez.collections.collections.iterators;
package com.ossez.collections.iterators;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
core-java-modules/core-java-collections-3/src/main/java/com/ossez/collections/removeallperformance/HashSetBenchmark.java
+2 -2
View File
@@ -1,4 +1,4 @@
package com.ossez.collections.collections.removeallperformance;
package com.ossez.collections.removeallperformance;
import java.util.ArrayList;
import java.util.HashSet;
@@ -6,7 +6,7 @@ import java.util.List;
import java.util.Set;
import java.util.concurrent.TimeUnit;
import com.ossez.collections.collections.containsperformance.Employee;
import com.ossez.collections.containsperformance.Employee;
import org.apache.commons.lang3.RandomStringUtils;
import org.openjdk.jmh.annotations.Benchmark;
import org.openjdk.jmh.annotations.BenchmarkMode;
core-java-modules/core-java-collections-3/src/main/java/com/ossez/collections/sortingcomparison/ArraySortBenchmark.java
+1 -1
View File
@@ -1,4 +1,4 @@
package com.ossez.collections.collections.sortingcomparison;
package com.ossez.collections.sortingcomparison;
import java.util.Arrays;
import java.util.concurrent.TimeUnit;
core-java-modules/core-java-collections-3/src/test/java/com/ossez/collections/iterators/IteratorsUnitTest.java
+3 -3
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@@ -1,8 +1,8 @@
package com.ossez.collections.iterators;
import static com.ossez.collections.collections.iterators.Iterators.failFast1;
import static com.ossez.collections.collections.iterators.Iterators.failFast2;
import static com.ossez.collections.collections.iterators.Iterators.failSafe1;
import static com.ossez.collections.iterators.Iterators.failFast1;
import static com.ossez.collections.iterators.Iterators.failFast2;
import static com.ossez.collections.iterators.Iterators.failSafe1;
import static org.assertj.core.api.Assertions.assertThat;
import static org.assertj.core.api.Assertions.assertThatThrownBy;
core-java-modules/core-java-numbers/README.md
+1 -1
View File
@@ -1,6 +1,6 @@
## Java 数字（Number）
这个模块中包含有关 Java 数字（Number）有关的文章。
本模块中包含有关 Java 数字（Number）有关的文章。
### 相关文章
- [理解 Java 中的 NumberFormatException 异常](https://www.ossez.com/t/java-numberformatexception/13986)
core-java-modules/core-java-numbers/pom.xml
+3 -4
View File
@@ -8,10 +8,9 @@
<packaging>jar</packaging>
<parent>
<groupId>com.ossez</groupId>
<artifactId>parent-modules</artifactId>
<groupId>com.ossez.core-java-modules</groupId>
<artifactId>core-java-modules</artifactId>
<version>0.0.2-SNAPSHOT</version>
<relativePath>../pom.xml</relativePath>
</parent>
<dependencies>
@@ -49,7 +48,7 @@
<properties>
<icu4j.version>61.1</icu4j.version>
<maven.compiler.release>15</maven.compiler.release>
<maven.compiler.release>11</maven.compiler.release>
</properties>
</project>
core-java-modules/core-java-numbers/src/main/java/com/ossez/java9/compactstring/CompactStringDemo.java
+21
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@@ -0,0 +1,21 @@
package com.ossez.java9.compactstring;
import java.util.List;
import java.util.stream.IntStream;
import static java.util.stream.Collectors.toList;
public class CompactStringDemo {
public static void main(String[] args) {
long startTime = System.currentTimeMillis();
List strings = IntStream.rangeClosed(1, 10_000_000).mapToObj(Integer::toString).collect(toList());
long totalTime = System.currentTimeMillis() - startTime;
System.out.println("Generated " + strings.size() + " strings in " + totalTime + " ms.");
startTime = System.currentTimeMillis();
String appended = (String) strings.stream().limit(100_000).reduce("", (left, right) -> left.toString() + right.toString());
totalTime = System.currentTimeMillis() - startTime;
System.out.println("Created string of length " + appended.length() + " in " + totalTime + " ms.");
}
}
core-java-modules/core-java-numbers/src/main/java/com/ossez/localization/App.java
+21
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@@ -0,0 +1,21 @@
package com.ossez.localization;
import java.text.ParseException;
import java.util.Arrays;
import java.util.List;
import java.util.Locale;
public class App {
/**
* Runs all available formatter
* @throws ParseException
*/
public static void main(String[] args) {
List<Locale> locales = Arrays.asList(new Locale[] { Locale.UK, Locale.ITALY, Locale.FRANCE, Locale.forLanguageTag("pl-PL") });
Localization.run(locales);
JavaSEFormat.run(locales);
ICUFormat.run(locales);
}
}
core-java-modules/core-java-numbers/src/main/java/com/ossez/localization/ICUFormat.java
+29
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@@ -0,0 +1,29 @@
package com.ossez.localization;
import com.ibm.icu.text.MessageFormat;
import java.util.List;
import java.util.Locale;
import java.util.ResourceBundle;
public class ICUFormat {
public static String getLabel(Locale locale, Object[] data) {
ResourceBundle bundle = ResourceBundle.getBundle("formats", locale);
String format = bundle.getString("label-icu");
MessageFormat formatter = new MessageFormat(format, locale);
return formatter.format(data);
}
public static void run(List<Locale> locales) {
System.out.println("ICU formatter");
locales.forEach(locale -> System.out.println(getLabel(locale, new Object[] { "Alice", "female", 0 })));
locales.forEach(locale -> System.out.println(getLabel(locale, new Object[] { "Alice", "female", 1 })));
locales.forEach(locale -> System.out.println(getLabel(locale, new Object[] { "Alice", "female", 2 })));
locales.forEach(locale -> System.out.println(getLabel(locale, new Object[] { "Alice", "female", 3 })));
locales.forEach(locale -> System.out.println(getLabel(locale, new Object[] { "Bob", "male", 0 })));
locales.forEach(locale -> System.out.println(getLabel(locale, new Object[] { "Bob", "male", 1 })));
locales.forEach(locale -> System.out.println(getLabel(locale, new Object[] { "Bob", "male", 2 })));
locales.forEach(locale -> System.out.println(getLabel(locale, new Object[] { "Bob", "male", 3 })));
}
}
core-java-modules/core-java-numbers/src/main/java/com/ossez/localization/JavaSEFormat.java
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package com.ossez.localization;
import java.text.MessageFormat;
import java.util.Date;
import java.util.List;
import java.util.Locale;
import java.util.ResourceBundle;
public class JavaSEFormat {
public static String getLabel(Locale locale, Object[] data) {
ResourceBundle bundle = ResourceBundle.getBundle("formats", locale);
final String pattern = bundle.getString("label");
final MessageFormat formatter = new MessageFormat(pattern, locale);
return formatter.format(data);
}
public static void run(List<Locale> locales) {
System.out.println("Java formatter");
final Date date = new Date(System.currentTimeMillis());
locales.forEach(locale -> System.out.println(getLabel(locale, new Object[] { date, "Alice", 0 })));
locales.forEach(locale -> System.out.println(getLabel(locale, new Object[] { date, "Alice", 2 })));
}
}
core-java-modules/core-java-numbers/src/main/java/com/ossez/localization/Localization.java
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package com.ossez.localization;
import java.util.List;
import java.util.Locale;
import java.util.ResourceBundle;
public class Localization {
public static String getLabel(Locale locale) {
final ResourceBundle bundle = ResourceBundle.getBundle("messages", locale);
return bundle.getString("label");
}
public static void run(List<Locale> locales) {
locales.forEach(locale -> System.out.println(getLabel(locale)));
}
}
core-java-modules/core-java-numbers/src/main/java/com/ossez/stringperformance/StringPerformance.java
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package com.ossez.stringperformance;
import com.google.common.base.Splitter;
import org.apache.commons.lang3.StringUtils;
import org.openjdk.jmh.annotations.*;
import org.openjdk.jmh.runner.Runner;
import org.openjdk.jmh.runner.options.Options;
import org.openjdk.jmh.runner.options.OptionsBuilder;
import java.util.ArrayList;
import java.util.List;
import java.util.StringTokenizer;
import java.util.concurrent.TimeUnit;
import java.util.regex.Pattern;
@BenchmarkMode(Mode.SingleShotTime)
@OutputTimeUnit(TimeUnit.MILLISECONDS)
@Measurement(batchSize = 100000, iterations = 10)
@Warmup(batchSize = 100000, iterations = 10)
@State(Scope.Thread)
public class StringPerformance {
protected String baeldung = "baeldung";
protected String longString = "Hello baeldung, I am a bit longer than other Strings";
protected String formatString = "hello %s, nice to meet you";
protected String formatDigit = "%d";
protected String emptyString = " ";
protected String result = "";
protected int sampleNumber = 100;
protected Pattern spacePattern = Pattern.compile(emptyString);
protected Pattern longPattern = Pattern.compile(longString);
protected List<String> stringSplit = new ArrayList<>();
protected List<String> stringTokenizer = new ArrayList<>();
@Benchmark
public String benchmarkStringDynamicConcat() {
result += baeldung;
return result;
}
@Benchmark
public StringBuilder benchmarkStringBuilder() {
StringBuilder stringBuilder = new StringBuilder(result);
stringBuilder.append(baeldung);
return stringBuilder;
}
@Benchmark
public StringBuffer benchmarkStringBuffer() {
StringBuffer stringBuffer = new StringBuffer(result);
stringBuffer.append(baeldung);
return stringBuffer;
}
@Benchmark
public String benchmarkStringConstructor() {
String result = new String("baeldung");
return result;
}
@Benchmark
public String benchmarkStringLiteral() {
String result = "baeldung";
return result;
}
@Benchmark
public String benchmarkStringFormat_s() {
return String.format(formatString, baeldung);
}
@Benchmark
public String benchmarkStringConcat() {
result = result.concat(baeldung);
return result;
}
@Benchmark
public String benchmarkStringIntern() {
return baeldung.intern();
}
@Benchmark
public String benchmarkStringReplace() {
return longString.replace("average", " average !!!");
}
@Benchmark
public String benchmarkStringUtilsReplace() {
return StringUtils.replace(longString, "average", " average !!!");
}
@Benchmark
public List<String> benchmarkGuavaSplitter() {
return Splitter.on(" ").trimResults()
.omitEmptyStrings()
.splitToList(longString);
}
@Benchmark
public String [] benchmarkStringSplit() {
return longString.split(emptyString);
}
@Benchmark
public String [] benchmarkStringSplitPattern() {
return spacePattern.split(longString, 0);
}
@Benchmark
public List benchmarkStringTokenizer() {
StringTokenizer st = new StringTokenizer(longString);
while (st.hasMoreTokens()) {
stringTokenizer.add(st.nextToken());
}
return stringTokenizer;
}
@Benchmark
public List benchmarkStringIndexOf() {
int pos = 0, end;
while ((end = longString.indexOf(' ', pos)) >= 0) {
stringSplit.add(longString.substring(pos, end));
pos = end + 1;
}
//Add last token of string
stringSplit.add(longString.substring(pos));
return stringSplit;
}
@Benchmark
public String benchmarkIntegerToString() {
return Integer.toString(sampleNumber);
}
@Benchmark
public String benchmarkStringValueOf() {
return String.valueOf(sampleNumber);
}
@Benchmark
public String benchmarkStringConvertPlus() {
return sampleNumber + "";
}
@Benchmark
public String benchmarkStringFormat_d() {
return String.format(formatDigit, sampleNumber);
}
@Benchmark
public boolean benchmarkStringEquals() {
return longString.equals(baeldung);
}
@Benchmark
public boolean benchmarkStringEqualsIgnoreCase() {
return longString.equalsIgnoreCase(baeldung);
}
@Benchmark
public boolean benchmarkStringMatches() {
return longString.matches(baeldung);
}
@Benchmark
public boolean benchmarkPrecompiledMatches() {
return longPattern.matcher(baeldung).matches();
}
@Benchmark
public int benchmarkStringCompareTo() {
return longString.compareTo(baeldung);
}
@Benchmark
public boolean benchmarkStringIsEmpty() {
return longString.isEmpty();
}
@Benchmark
public boolean benchmarkStringLengthZero() {
return longString.length() == 0;
}
public static void main(String[] args) throws Exception {
Options options = new OptionsBuilder()
.include(StringPerformance.class.getSimpleName()).threads(1)
.forks(1).shouldFailOnError(true)
.shouldDoGC(true)
.jvmArgs("-server").build();
new Runner(options).run();
}
}
core-java-modules/core-java-numbers/src/main/resources/config.properties
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core-java-modules/core-java-numbers/src/main/resources/formats_en.properties
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label=On {0, date, short} {1} has sent you {2, choice, 0#no messages|1#a message|2#two messages|2<{2,number,integer} messages}.
label-icu={0} has sent you {2, plural, =0 {no messages} =1 {a message} other {{2, number, integer} messages}}.
core-java-modules/core-java-numbers/src/main/resources/formats_fr.properties
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label={0, date, short}, {1}{2, choice, 0# ne|0<} vous a envoy\u00e9 {2, choice, 0#aucun message|1#un message|2#deux messages|2<{2,number,integer} messages}.
label-icu={0} {2, plural, =0 {ne } other {}}vous a envoy\u00e9 {2, plural, =0 {aucun message} =1 {un message} other {{2, number, integer} messages}}.
core-java-modules/core-java-numbers/src/main/resources/formats_it.properties
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label={0, date, short} {1} ti ha inviato {2, choice, 0#nessun messagio|1#un messaggio|2#due messaggi|2<{2, number, integer} messaggi}.
label-icu={0} {2, plural, =0 {non } other {}}ti ha inviato {2, plural, =0 {nessun messaggio} =1 {un messaggio} other {{2, number, integer} messaggi}}.

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