From e6aa169234c7d6f7bb5fd83aa3ab6e7671bf89b0 Mon Sep 17 00:00:00 2001
From: YuCheng Hu <huyuchengus@gmail.com>
Date: Sat, 4 Jun 2022 15:22:55 -0400
Subject: [PATCH] =?UTF-8?q?https://www.ossez.com/t/java-numberformatexcept?=
 =?UTF-8?q?ion/13986=20=E5=AD=97=E7=AC=A6=E4=B8=B2=E6=A0=BC=E5=BC=8F?=
 =?UTF-8?q?=E6=95=B0=E5=80=BC=E7=9A=84=E5=86=85=E5=AE=B9?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .idea/compiler.xml                            |  26 +-
 .idea/encodings.xml                           |  24 +
 .idea/misc.xml                                |   6 +
 .idea/workspace.xml                           | 445 ++++++++++++++----
 README.md                                     |  12 +-
 core-java-modules/README.md                   |   5 +-
 core-java-modules/core-java-11/README.md      |   2 +-
 core-java-modules/core-java-8-2/pom.xml       |   1 -
 .../main/java/com/ossez/localization/App.java |   6 +-
 .../foramt/NumberFormatExceptionTest.java     |  35 ++
 .../baeldung/multiline/MultiLineString.java   |  31 +-
 .../multiline/MultiLineStringUnitTest.java    |   2 +-
 core-java-modules/pom.xml                     |   3 +
 pom.xml                                       |   9 +-
 14 files changed, 478 insertions(+), 129 deletions(-)
 create mode 100644 core-java-modules/core-java-numbers/src/test/java/com/ossez/number/foramt/NumberFormatExceptionTest.java

diff --git a/.idea/compiler.xml b/.idea/compiler.xml
index 584edc6a20..f4a848e84b 100644
--- a/.idea/compiler.xml
+++ b/.idea/compiler.xml
@@ -9,18 +9,29 @@
         <outputRelativeToContentRoot value="true" />
         <module name="codebank" />
         <module name="core-java-collections-list" />
+        <module name="core-java-streams" />
         <module name="core-java-io" />
-        <module name="core-java-datetime-conversion" />
         <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="discourse" />
+        <module name="core-java-collections-3" />
+        <module name="core-java-collections-2" />
       </profile>
     </annotationProcessing>
     <bytecodeTargetLevel>
       <module name="assertion-libraries" target="1.8" />
       <module name="core-java" target="1.8" />
-      <module name="core-java-8-2" target="1.8" />
+      <module name="core-java-8 (1)" target="11" />
       <module name="core-java-8-datetime" target="1.8" />
       <module name="core-java-8-datetime-2" target="1.8" />
       <module name="core-java-arrays-convert" target="1.8" />
@@ -30,13 +41,8 @@
       <module name="core-java-arrays-operations-basic" target="1.8" />
       <module name="core-java-arrays-sorting" target="1.8" />
       <module name="core-java-char" target="1.8" />
-      <module name="core-java-collections" target="1.8" />
-      <module name="core-java-collections-2" target="1.8" />
-      <module name="core-java-collections-3" target="1.8" />
-      <module name="core-java-collections-4" target="1.8" />
+      <module name="core-java-collections-4" target="11" />
       <module name="core-java-collections-array-list" target="1.8" />
-      <module name="core-java-collections-list-2" target="1.8" />
-      <module name="core-java-collections-list-3" target="1.8" />
       <module name="core-java-collections-maps" target="1.8" />
       <module name="core-java-collections-maps-2" target="1.8" />
       <module name="core-java-collections-maps-3" target="1.8" />
@@ -103,7 +109,6 @@
       <module name="core-java-security-3" target="1.8" />
       <module name="core-java-security-algorithms" target="1.8" />
       <module name="core-java-serialization" target="1.8" />
-      <module name="core-java-streams" target="1.8" />
       <module name="core-java-streams-2" target="1.8" />
       <module name="core-java-streams-3" target="1.8" />
       <module name="core-java-streams-4" target="1.8" />
@@ -168,6 +173,7 @@
   </component>
   <component name="JavacSettings">
     <option name="ADDITIONAL_OPTIONS_OVERRIDE">
+      <module name="core-java-streams" options="-parameters" />
       <module name="jmh" options="--add-exports java.base/jdk.internal.vm.annotation=ALL-UNNAMED" />
     </option>
   </component>
diff --git a/.idea/encodings.xml b/.idea/encodings.xml
index 789cc552fc..bb0ed5dd9e 100644
--- a/.idea/encodings.xml
+++ b/.idea/encodings.xml
@@ -1,16 +1,40 @@
 <?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-4/src/main/java" charset="UTF-8" />
+    <file url="file://$PROJECT_DIR$/core-java-modules/core-java-collections-4/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://$PROJECT_DIR$/jackson-modules/jackson-annotations/src/main/java" charset="UTF-8" />
diff --git a/.idea/misc.xml b/.idea/misc.xml
index 5581558b26..c9de2abb83 100644
--- a/.idea/misc.xml
+++ b/.idea/misc.xml
@@ -9,8 +9,14 @@
         <option value="$PROJECT_DIR$/core-java-modules/pom.xml" />
         <option value="$PROJECT_DIR$/testing-modules/junit5-migration/pom.xml" />
         <option value="$PROJECT_DIR$/testing-modules/junit-5-basics/pom.xml" />
+        <option value="$PROJECT_DIR$/core-java-modules/core-java-8-2/pom.xml" />
       </list>
     </option>
+    <option name="ignoredFiles">
+      <set>
+        <option value="$PROJECT_DIR$/core-java-modules/core-java-collections-4/pom.xml" />
+      </set>
+    </option>
   </component>
   <component name="ProjectRootManager" version="2" languageLevel="JDK_11" default="true" project-jdk-name="11" project-jdk-type="JavaSDK" />
 </project>
\ No newline at end of file
diff --git a/.idea/workspace.xml b/.idea/workspace.xml
index 1ee220d083..649b14544d 100644
--- a/.idea/workspace.xml
+++ b/.idea/workspace.xml
@@ -4,9 +4,20 @@
     <option name="autoReloadType" value="SELECTIVE" />
   </component>
   <component name="ChangeListManager">
-    <list default="true" id="080575e3-7e62-4649-ae70-06fb6130a866" name="Changes" comment="更新： Java 从一个 List 中删除重复的元素 文章链接">
+    <list default="true" id="080575e3-7e62-4649-ae70-06fb6130a866" name="Changes" comment="更新 Java 字符串相关的内容和使用的版本">
+      <change beforePath="$PROJECT_DIR$/.idea/compiler.xml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/compiler.xml" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/.idea/encodings.xml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/encodings.xml" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/.idea/misc.xml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/misc.xml" afterDir="false" />
       <change beforePath="$PROJECT_DIR$/.idea/workspace.xml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/workspace.xml" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/core-java-modules/core-java-collections-list/src/test/java/com/ossez/java/list/ReverseIteratorUnitTest.java" beforeDir="false" afterPath="$PROJECT_DIR$/core-java-modules/core-java-collections-list/src/test/java/com/ossez/java/list/ReverseIteratorUnitTest.java" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/README.md" beforeDir="false" afterPath="$PROJECT_DIR$/README.md" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/core-java-modules/README.md" beforeDir="false" afterPath="$PROJECT_DIR$/core-java-modules/README.md" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/core-java-modules/core-java-11/README.md" beforeDir="false" afterPath="$PROJECT_DIR$/core-java-modules/core-java-11/README.md" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/core-java-modules/core-java-8-2/pom.xml" beforeDir="false" afterPath="$PROJECT_DIR$/core-java-modules/core-java-8-2/pom.xml" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/core-java-modules/core-java-8-2/src/main/java/com/ossez/localization/App.java" beforeDir="false" afterPath="$PROJECT_DIR$/core-java-modules/core-java-8-2/src/main/java/com/ossez/localization/App.java" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/core-java-modules/core-java-strings/src/main/java/com/baeldung/multiline/MultiLineString.java" beforeDir="false" afterPath="$PROJECT_DIR$/core-java-modules/core-java-strings/src/main/java/com/baeldung/multiline/MultiLineString.java" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/core-java-modules/core-java-strings/src/test/java/com/baeldung/multiline/MultiLineStringUnitTest.java" beforeDir="false" afterPath="$PROJECT_DIR$/core-java-modules/core-java-strings/src/test/java/com/baeldung/multiline/MultiLineStringUnitTest.java" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/core-java-modules/pom.xml" beforeDir="false" afterPath="$PROJECT_DIR$/core-java-modules/pom.xml" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/pom.xml" beforeDir="false" afterPath="$PROJECT_DIR$/pom.xml" afterDir="false" />
     </list>
     <option name="SHOW_DIALOG" value="false" />
     <option name="HIGHLIGHT_CONFLICTS" value="true" />
@@ -19,9 +30,25 @@
   <component name="Git.Settings">
     <option name="RECENT_GIT_ROOT_PATH" value="$PROJECT_DIR$" />
   </component>
+  <component name="GitSEFilterConfiguration">
+    <file-type-list>
+      <filtered-out-file-type name="LOCAL_BRANCH" />
+      <filtered-out-file-type name="REMOTE_BRANCH" />
+      <filtered-out-file-type name="TAG" />
+      <filtered-out-file-type name="COMMIT_BY_MESSAGE" />
+    </file-type-list>
+  </component>
   <component name="HighlightingSettingsPerFile">
+    <setting file="file://$MAVEN_REPOSITORY$/commons-io/commons-io/2.7/commons-io-2.7.pom" root0="FORCE_HIGHLIGHTING" />
+    <setting file="file://$MAVEN_REPOSITORY$/com/google/guava/guava/23.0/guava-23.0.pom" root0="FORCE_HIGHLIGHTING" />
+    <setting file="file://$PROJECT_DIR$/core-java-modules/core-java-streams/pom.xml" root0="FORCE_HIGHLIGHTING" />
     <setting file="file://$PROJECT_DIR$/toolkits/codebank/src/test/resources/log4j2.xml" root0="FORCE_HIGHLIGHTING" />
     <setting file="file://$PROJECT_DIR$/src/test/resources/log4j2.xml" root0="FORCE_HIGHLIGHTING" />
+    <setting file="file://$PROJECT_DIR$/parent-java/pom.xml" root0="FORCE_HIGHLIGHTING" />
+    <setting file="file://$PROJECT_DIR$/core-java-modules/core-java-io/src/main/java/com/ossez/unzip/UnzipFile.java" root0="FORCE_HIGHLIGHTING" />
+    <setting file="file://$PROJECT_DIR$/LICENSE" root0="FORCE_HIGHLIGHTING" />
+    <setting file="file://$PROJECT_DIR$/core-java-modules/core-java-io/pom.xml" root0="FORCE_HIGHLIGHTING" />
+    <setting file="file://$PROJECT_DIR$/pom.xml" root0="FORCE_HIGHLIGHTING" />
   </component>
   <component name="MarkdownSettingsMigration">
     <option name="stateVersion" value="1" />
@@ -34,6 +61,9 @@
     </option>
   </component>
   <component name="ProjectId" id="28NaD4KRCPKHeUH5DxePmSU7br2" />
+  <component name="ProjectLevelVcsManager">
+    <ConfirmationsSetting value="1" id="Add" />
+  </component>
   <component name="ProjectViewState">
     <option name="hideEmptyMiddlePackages" value="true" />
     <option name="showLibraryContents" value="true" />
@@ -47,18 +77,21 @@
     <property name="go.format.on.save.advertiser.fired" value="true" />
     <property name="go.formatter.settings.were.checked" value="true" />
     <property name="go.import.settings.migrated" value="true" />
-    <property name="last_opened_file_path" value="$PROJECT_DIR$/core-java-modules/core-java-collections-list/src/test/resources" />
+    <property name="last_opened_file_path" value="$PROJECT_DIR$/core-java-modules" />
     <property name="node.js.detected.package.eslint" value="true" />
     <property name="node.js.detected.package.tslint" value="true" />
     <property name="node.js.selected.package.eslint" value="(autodetect)" />
     <property name="node.js.selected.package.tslint" value="(autodetect)" />
+    <property name="nodejs_package_manager_path" value="npm" />
     <property name="project.structure.last.edited" value="Project" />
-    <property name="project.structure.proportion" value="0.0" />
-    <property name="project.structure.side.proportion" value="0.0" />
-    <property name="settings.editor.selected.configurable" value="MavenSettings" />
+    <property name="project.structure.proportion" value="0.15" />
+    <property name="project.structure.side.proportion" value="0.2" />
+    <property name="settings.editor.selected.configurable" value="build.tools" />
   </component>
   <component name="RecentsManager">
     <key name="CopyFile.RECENT_KEYS">
+      <recent name="D:\WorkDir\Repository\GitHub\cwiki-us-docs\java-tutorials\core-java-modules" />
+      <recent name="D:\WorkDir\Repository\GitHub\cwiki-us-docs\java-tutorials\core-java-modules\core-java-strings" />
       <recent name="D:\WorkDir\Repository\GitHub\cwiki-us-docs\java-tutorials\core-java-modules\core-java-collections-list\src\test\resources" />
       <recent name="D:\WorkDir\Repository\GitHub\cwiki-us-docs\java-tutorials\core-java-modules\core-java-collections-list\src\test" />
     </key>
@@ -66,7 +99,7 @@
       <recent name="com.ossez.collections" />
     </key>
   </component>
-  <component name="RunManager" selected="JUnit.ReverseIteratorUnitTest.whenIteratingUsingGuava_thenCorrect">
+  <component name="RunManager" selected="JUnit.NumberFormatExceptionTest.ConstructorNumberFormatException">
     <configuration default="true" type="DjangoTestsConfigurationType">
       <module name="junit-5-basics" />
       <option name="INTERPRETER_OPTIONS" value="" />
@@ -106,81 +139,81 @@
       <framework value="gotest" />
       <method v="2" />
     </configuration>
-    <configuration name="JavaCollectionCleanupUnitTest.givenListContainsDuplicates_whenRemovingDuplicatesWithPlainJava_thenCorrect" type="JUnit" factoryName="JUnit" temporary="true" nameIsGenerated="true">
-      <module name="core-java-collections-list" />
+    <configuration name="Java8DefaultStaticIntefaceMethodsUnitTest.callStaticInterfaceMethdosMethods_whenExpectedResults_thenCorrect" type="JUnit" factoryName="JUnit" temporary="true" nameIsGenerated="true">
+      <module name="core-java-8" />
       <extension name="coverage">
         <pattern>
-          <option name="PATTERN" value="com.ossez.collections.*" />
+          <option name="PATTERN" value="com.ossez.java8.*" />
           <option name="ENABLED" value="true" />
         </pattern>
       </extension>
-      <option name="PACKAGE_NAME" value="com.ossez.collections" />
-      <option name="MAIN_CLASS_NAME" value="com.ossez.collections.JavaCollectionCleanupUnitTest" />
-      <option name="METHOD_NAME" value="givenListContainsDuplicates_whenRemovingDuplicatesWithPlainJava_thenCorrect" />
+      <option name="PACKAGE_NAME" value="com.ossez.java8" />
+      <option name="MAIN_CLASS_NAME" value="com.ossez.java8.Java8DefaultStaticIntefaceMethodsUnitTest" />
+      <option name="METHOD_NAME" value="callStaticInterfaceMethdosMethods_whenExpectedResults_thenCorrect" />
       <option name="TEST_OBJECT" value="method" />
       <method v="2">
         <option name="Make" enabled="true" />
       </method>
     </configuration>
-    <configuration name="JavaCollectionCleanupUnitTest.givenListContainsNulls_whenRemovingNullsWithGuavaV1_thenCorrect" type="JUnit" factoryName="JUnit" temporary="true" nameIsGenerated="true">
-      <module name="core-java-collections-list" />
+    <configuration name="NumberFormatExceptionTest.ConstructorNumberFormatException" type="JUnit" factoryName="JUnit" temporary="true" nameIsGenerated="true">
+      <module name="core-java-numbers" />
       <extension name="coverage">
         <pattern>
-          <option name="PATTERN" value="com.ossez.collections.*" />
+          <option name="PATTERN" value="com.ossez.number.foramt.*" />
           <option name="ENABLED" value="true" />
         </pattern>
       </extension>
-      <option name="PACKAGE_NAME" value="com.ossez.collections" />
-      <option name="MAIN_CLASS_NAME" value="com.ossez.collections.JavaCollectionCleanupUnitTest" />
-      <option name="METHOD_NAME" value="givenListContainsNulls_whenRemovingNullsWithGuavaV1_thenCorrect" />
+      <option name="PACKAGE_NAME" value="com.ossez.number.foramt" />
+      <option name="MAIN_CLASS_NAME" value="com.ossez.number.foramt.NumberFormatExceptionTest" />
+      <option name="METHOD_NAME" value="ConstructorNumberFormatException" />
       <option name="TEST_OBJECT" value="method" />
       <method v="2">
         <option name="Make" enabled="true" />
       </method>
     </configuration>
-    <configuration name="JavaCollectionCleanupUnitTest.givenListContainsNulls_whenRemovingNullsWithPlainJavaAlternative_thenCorrect" type="JUnit" factoryName="JUnit" temporary="true" nameIsGenerated="true">
-      <module name="core-java-collections-list" />
+    <configuration name="OptionalUnitTest.givenOptional_whenMapWorks_thenCorrect2" type="JUnit" factoryName="JUnit" temporary="true" nameIsGenerated="true">
+      <module name="core-java-11-2" />
       <extension name="coverage">
         <pattern>
-          <option name="PATTERN" value="com.ossez.collections.*" />
+          <option name="PATTERN" value="com.ossez.optional.*" />
           <option name="ENABLED" value="true" />
         </pattern>
       </extension>
-      <option name="PACKAGE_NAME" value="com.ossez.collections" />
-      <option name="MAIN_CLASS_NAME" value="com.ossez.collections.JavaCollectionCleanupUnitTest" />
-      <option name="METHOD_NAME" value="givenListContainsNulls_whenRemovingNullsWithPlainJavaAlternative_thenCorrect" />
+      <option name="PACKAGE_NAME" value="com.ossez.optional" />
+      <option name="MAIN_CLASS_NAME" value="com.ossez.optional.OptionalUnitTest" />
+      <option name="METHOD_NAME" value="givenOptional_whenMapWorks_thenCorrect2" />
       <option name="TEST_OBJECT" value="method" />
       <method v="2">
         <option name="Make" enabled="true" />
       </method>
     </configuration>
-    <configuration name="JavaCollectionCleanupUnitTest.givenListContainsNulls_whenRemovingNullsWithPlainJava_thenCorrect" type="JUnit" factoryName="JUnit" temporary="true" nameIsGenerated="true">
-      <module name="core-java-collections-list" />
+    <configuration name="OptionalUnitTest.whenOrElseThrowWorks_thenCorrect" type="JUnit" factoryName="JUnit" temporary="true" nameIsGenerated="true">
+      <module name="core-java-11-2" />
       <extension name="coverage">
         <pattern>
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-      <option name="METHOD_NAME" value="givenListContainsNulls_whenRemovingNullsWithPlainJava_thenCorrect" />
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         <option name="Make" enabled="true" />
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-    <configuration name="ReverseIteratorUnitTest.whenIteratingUsingGuava_thenCorrect" type="JUnit" factoryName="JUnit" temporary="true" nameIsGenerated="true">
-      <module name="core-java-collections-list" />
+    <configuration name="StrategyDesignPatternUnitTest.shouldDivideByTwo_WhenApplyingStaffDiscounter" type="JUnit" factoryName="JUnit" temporary="true" nameIsGenerated="true">
+      <module name="core-java-8" />
       <extension name="coverage">
         <pattern>
-          <option name="PATTERN" value="com.ossez.java.list.*" />
+          <option name="PATTERN" value="com.ossez.strategy.*" />
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-      <option name="PACKAGE_NAME" value="com.ossez.java.list" />
-      <option name="MAIN_CLASS_NAME" value="com.ossez.java.list.ReverseIteratorUnitTest" />
-      <option name="METHOD_NAME" value="whenIteratingUsingGuava_thenCorrect" />
+      <option name="PACKAGE_NAME" value="com.ossez.strategy" />
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       <option name="TEST_OBJECT" value="method" />
       <method v="2">
         <option name="Make" enabled="true" />
@@ -295,11 +328,11 @@
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-        <item itemvalue="JUnit.JavaCollectionCleanupUnitTest.givenListContainsNulls_whenRemovingNullsWithPlainJava_thenCorrect" />
+        <item itemvalue="JUnit.NumberFormatExceptionTest.ConstructorNumberFormatException" />
+        <item itemvalue="JUnit.Java8DefaultStaticIntefaceMethodsUnitTest.callStaticInterfaceMethdosMethods_whenExpectedResults_thenCorrect" />
+        <item itemvalue="JUnit.StrategyDesignPatternUnitTest.shouldDivideByTwo_WhenApplyingStaffDiscounter" />
+        <item itemvalue="JUnit.OptionalUnitTest.givenOptional_whenMapWorks_thenCorrect2" />
+        <item itemvalue="JUnit.OptionalUnitTest.whenOrElseThrowWorks_thenCorrect" />
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+        </line-breakpoint>
+        <line-breakpoint enabled="true" type="java-line">
+          <url>file://$PROJECT_DIR$/core-java-modules/core-java-strings/src/main/java/com/baeldung/multiline/MultiLineString.java</url>
+          <line>73</line>
           <option name="timeStamp" value="7" />
         </line-breakpoint>
       </breakpoints>
diff --git a/README.md b/README.md
index 82a893264f..4dafa7e44e 100644
--- a/README.md
+++ b/README.md
@@ -21,11 +21,7 @@
 | 电子邮件    | [service@ossez.com](mailto:service@ossez.com)      |
 | QQ 或微信  | 103899765                                          |
 | QQ 交流群  | 15186112                                           |
-| 社区论坛    | [https://www.ossez.com/](https://www.ossez.com/)   |
-| WIKI 维基 | [https://www.cwiki.us/](https://www.cwiki.us/)     |
-| CN 博客   | [https://www.cwikius.cn/](https://www.cwikius.cn/) |
-
-## 公众平台
+| 社区论坛    | [ 公众平台
 我们建议您通过社区论坛来和我们进行沟通，请关注我们公众平台上的账号
 
 ## 微信公众号
@@ -34,4 +30,8 @@
 ## 头条号
 我们也在头条号上创建了我们的公众号，请扫描下面的 QR 关注我们的头条号。
 
-![](https://cdn.ossez.com/img/cwikius/cwikus-qr-toutiao.png)
\ No newline at end of file
+![](https://cdn.ossez.com/img/cwikius/cwikus-qr-toutiao.png)https://www.ossez.com/](https://www.ossez.com/)   |
+| WIKI 维基 | [https://www.cwiki.us/](https://www.cwiki.us/)     |
+| CN 博客   | [https://www.cwikius.cn/](https://www.cwikius.cn/) |
+
+##
\ No newline at end of file
diff --git a/core-java-modules/README.md b/core-java-modules/README.md
index 55dacca916..d07dff8751 100644
--- a/core-java-modules/README.md
+++ b/core-java-modules/README.md
@@ -4,7 +4,6 @@ This module contains modules about core Java
 
 ## Relevant articles:
 
-- [Multi-Module Maven Application with Java Modules](https://www.baeldung.com/maven-multi-module-project-java-jpms)
-- [Guide to Java FileChannel](https://www.baeldung.com/java-filechannel)
 - [Understanding the NumberFormatException in Java](https://www.baeldung.com/java-number-format-exception)
-- [Will an Error Be Caught by Catch Block in Java?](https://www.baeldung.com/java-error-catch)
+
+
diff --git a/core-java-modules/core-java-11/README.md b/core-java-modules/core-java-11/README.md
index a3601c8339..f860b8b0c1 100644
--- a/core-java-modules/core-java-11/README.md
+++ b/core-java-modules/core-java-11/README.md
@@ -4,7 +4,7 @@ This module contains articles about Java 11 core features
 
 ### Relevant articles
 
-- [Java 11 Single File Source Code](https://www.baeldung.com/java-single-file-source-code)
+- [Java 11 Single File Source Code](https://www.baeldung.com/java-single-file-source-codehttps://www.baeldung.com/java-single-file-source-code)
 - [Java 11 Local Variable Syntax for Lambda Parameters](https://www.baeldung.com/java-var-lambda-params)
 - [Java 11 String API Additions](https://www.baeldung.com/java-11-string-api)
 - [Java 11 Nest Based Access Control](https://www.baeldung.com/java-nest-based-access-control)
diff --git a/core-java-modules/core-java-8-2/pom.xml b/core-java-modules/core-java-8-2/pom.xml
index 6b3338804e..7c8a59c157 100644
--- a/core-java-modules/core-java-8-2/pom.xml
+++ b/core-java-modules/core-java-8-2/pom.xml
@@ -4,7 +4,6 @@
     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>core-java-8-2</artifactId>
-    <version>0.1.0-SNAPSHOT</version>
     <name>core-java-8-2</name>
     <packaging>jar</packaging>
 
diff --git a/core-java-modules/core-java-8-2/src/main/java/com/ossez/localization/App.java b/core-java-modules/core-java-8-2/src/main/java/com/ossez/localization/App.java
index 3fe6d8a267..a5047b8d92 100644
--- a/core-java-modules/core-java-8-2/src/main/java/com/ossez/localization/App.java
+++ b/core-java-modules/core-java-8-2/src/main/java/com/ossez/localization/App.java
@@ -6,13 +6,13 @@ import java.util.List;
 import java.util.Locale;
 
 public class App {
-
     /**
      * Runs all available formatter
-     * @throws ParseException 
+     *
+     * @param args
      */
     public static void main(String[] args) {
-        List<Locale> locales = Arrays.asList(new Locale[] { Locale.UK, Locale.ITALY, Locale.FRANCE, Locale.forLanguageTag("pl-PL") });
+        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);
diff --git a/core-java-modules/core-java-numbers/src/test/java/com/ossez/number/foramt/NumberFormatExceptionTest.java b/core-java-modules/core-java-numbers/src/test/java/com/ossez/number/foramt/NumberFormatExceptionTest.java
new file mode 100644
index 0000000000..9f9207647a
--- /dev/null
+++ b/core-java-modules/core-java-numbers/src/test/java/com/ossez/number/foramt/NumberFormatExceptionTest.java
@@ -0,0 +1,35 @@
+package com.ossez.number.foramt;
+
+
+import org.apache.commons.lang3.math.NumberUtils;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.TestInstance;
+
+import java.util.Arrays;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.junit.jupiter.api.Assertions.assertThrows;
+
+
+@TestInstance(TestInstance.Lifecycle.PER_METHOD)
+public class NumberFormatExceptionTest {
+
+
+    String stringPassword = "password";
+    char[] charPassword = new char[]{'p', 'a', 's', 's', 'w', 'o', 'r', 'd'};
+
+    @Test
+    public void ConstructorNumberFormatException() {
+        Exception exception = assertThrows(NumberFormatException.class, () -> {
+            new Integer("one");
+        });
+
+        System.out.println(exception);
+
+		Integer aIntegerObj = new Integer("one");
+        Double doubleDecimalObj = new Double("two.2");
+    }
+
+
+
+}
diff --git a/core-java-modules/core-java-strings/src/main/java/com/baeldung/multiline/MultiLineString.java b/core-java-modules/core-java-strings/src/main/java/com/baeldung/multiline/MultiLineString.java
index 0a7d868486..5d333799c4 100644
--- a/core-java-modules/core-java-strings/src/main/java/com/baeldung/multiline/MultiLineString.java
+++ b/core-java-modules/core-java-strings/src/main/java/com/baeldung/multiline/MultiLineString.java
@@ -10,9 +10,9 @@ import java.nio.file.Files;
 import java.nio.file.Paths;
 
 public class MultiLineString {
-
+    
     String newLine = System.getProperty("line.separator");
-
+    
     public String stringConcatenation() {
         return "Get busy living"
                 .concat(newLine)
@@ -22,7 +22,7 @@ public class MultiLineString {
                 .concat(newLine)
                 .concat("--Stephen King");
     }
-
+    
     public String stringJoin() {
         return String.join(newLine,
                            "Get busy living",
@@ -30,7 +30,7 @@ public class MultiLineString {
                            "get busy dying.",
                            "--Stephen King");
     }
-
+    
     public String stringBuilder() {
         return new StringBuilder()
                 .append("Get busy living")
@@ -42,7 +42,7 @@ public class MultiLineString {
                 .append("--Stephen King")
                 .toString();
     }
-
+    
     public String stringWriter() {
         StringWriter stringWriter = new StringWriter();
         PrintWriter printWriter = new PrintWriter(stringWriter);
@@ -52,26 +52,23 @@ public class MultiLineString {
         printWriter.println("--Stephen King");
         return stringWriter.toString();
     }
-
+    
     public String guavaJoiner() {
         return Joiner.on(newLine).join(ImmutableList.of("Get busy living",
             "or",
             "get busy dying.",
             "--Stephen King"));
     }
-
+    
     public String loadFromFile() throws IOException {
         return new String(Files.readAllBytes(Paths.get("src/main/resources/stephenking.txt")));
     }
 
-
-//    public String textBlocks() {
-//
-//        // THIS ONLY FOR JDK 15
-//        return """
-//            Get busy living
-//            or
-//            get busy dying.
-//            --Stephen King""";
-//    }
+    public String textBlocks() {
+        return """
+            Get busy living
+            or
+            get busy dying.
+            --Stephen King""";
+    }
 }
diff --git a/core-java-modules/core-java-strings/src/test/java/com/baeldung/multiline/MultiLineStringUnitTest.java b/core-java-modules/core-java-strings/src/test/java/com/baeldung/multiline/MultiLineStringUnitTest.java
index ca21b3e15c..66bc0a655b 100644
--- a/core-java-modules/core-java-strings/src/test/java/com/baeldung/multiline/MultiLineStringUnitTest.java
+++ b/core-java-modules/core-java-strings/src/test/java/com/baeldung/multiline/MultiLineStringUnitTest.java
@@ -16,7 +16,7 @@ public class MultiLineStringUnitTest {
         assertEquals(ms.stringJoin(), ms.stringBuilder());
         assertEquals(ms.stringBuilder(), ms.guavaJoiner());
         assertEquals(ms.guavaJoiner(), ms.loadFromFile());
-//        assertEquals(ms.loadFromFile(), ms.textBlocks());
+        assertEquals(ms.loadFromFile(), ms.textBlocks());
     }
     
 }
diff --git a/core-java-modules/pom.xml b/core-java-modules/pom.xml
index 8bf885516c..4178a8129b 100644
--- a/core-java-modules/pom.xml
+++ b/core-java-modules/pom.xml
@@ -16,6 +16,7 @@
 
     <modules>
         <module>core-java-8</module>
+        <module>core-java-8-2</module>
         <module>core-java-11</module>
         <module>core-java-11-2</module>
         <module>core-java-annotations</module>
@@ -27,7 +28,9 @@
         <module>core-java-collections-list-3</module>
         <module>core-java-datetime-conversion</module>
         <module>core-java-io</module>
+        <module>core-java-numbers</module>
         <module>core-java-streams</module>
+        <module>core-java-strings</module>
     </modules>
 
     <dependencyManagement>
diff --git a/pom.xml b/pom.xml
index 0c9fabd839..f0e6683677 100644
--- a/pom.xml
+++ b/pom.xml
@@ -64,9 +64,10 @@
         <commons-lang.version>2.6</commons-lang.version>
         <commons-lang3.version>3.12.0</commons-lang3.version>
         <commons-collections4.version>4.4</commons-collections4.version>
-
         <commons-math3.version>3.6.1</commons-math3.version>
         <commons-cli.version>1.4</commons-cli.version>
+        <commons-io.version>2.11.0</commons-io.version>
+
         <maven-war-plugin.version>3.0.0</maven-war-plugin.version>
 
         <!-- UTILS -->
@@ -141,6 +142,12 @@
             <artifactId>commons-math3</artifactId>
             <version>${commons-math3.version}</version>
         </dependency>
+        <dependency>
+            <groupId>commons-io</groupId>
+            <artifactId>commons-io</artifactId>
+            <version>${commons-io.version}</version>
+        </dependency>
+
         <dependency>
             <groupId>org.apache.velocity</groupId>
             <artifactId>velocity-engine-core</artifactId>