diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000000000000000000000000000000000000..7447f89a59769d232b07bf72eb111bc4618c8e59
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+/bin
\ No newline at end of file
diff --git a/README.md b/README.md
new file mode 100644
index 0000000000000000000000000000000000000000..1a91290981e8e934e41a4331d1bfa164c3cf2334
--- /dev/null
+++ b/README.md
@@ -0,0 +1,24 @@
+# 1.8 Telefonbuch
+
+**Voraussetzung**:
+Vorlesung zum Thema Maps.
+
+**Ziel**:
+Kennenlernen der API von `Map` und `SortedMap` durch einen Reverse-Engineering-Ansatz, bei dem eine Java-API-Dokumentation als Pflichtenheft verwendet wird.
+
+**Dauer**:
+< 1 Stunde
+
+## Aufgabenstellung
+Erstellen Sie eine Klasse `PhoneBook` (dt. Telefonbuch), die für die Verwaltung von Kontakteinträgen zuständig ist. Halten Sie sich bei der Implementierung der Klasse streng an die bereitgestellte JavaDoc.
+
+### Schritte zur Umsetzung
+1. **JavaDoc öffnen:** Die JavaDoc finden Sie unter dem oben genannten Link. Laden Sie das Projekt als ZIP-Datei herunter und entpacken Sie es lokal. Im Verzeichnis `doc` finden Sie eine Datei `index.html`, die Sie mit einem Browser öffnen können.
+
+2. **Dokumentation als Pflichtenheft:** Die Dokumentation enthält genaue Angaben zu Klassen, Methoden und Attributen. Diese Dokumentation muss als Pflichtenheft verstanden werden, das 1:1 umgesetzt werden soll.
+
+3. **Implementierung der Klasse `PhoneBook`:**
+ - Entwickeln Sie die Klasse basierend auf den Vorgaben der JavaDoc.
+ - Achten Sie darauf, alle beschriebenen Klassen, Methoden und Attribute exakt wie angegeben zu implementieren.
+
+4. **Überprüfung:** Stellen Sie sicher, dass Ihre Implementierung mit der Dokumentation übereinstimmt und die geforderten Funktionalitäten korrekt umgesetzt sind.
\ No newline at end of file
diff --git a/phonebook/.gitattributes b/phonebook/.gitattributes
deleted file mode 100644
index 00a51aff5e5a83d6313f3bd15fadc601a205b66f..0000000000000000000000000000000000000000
--- a/phonebook/.gitattributes
+++ /dev/null
@@ -1,6 +0,0 @@
-#
-# https://help.github.com/articles/dealing-with-line-endings/
-#
-# These are explicitly windows files and should use crlf
-*.bat text eol=crlf
-
diff --git a/phonebook/.gitignore b/phonebook/.gitignore
deleted file mode 100644
index f198ec547b9190a094cdd1e56458a0ed7b8c23c8..0000000000000000000000000000000000000000
--- a/phonebook/.gitignore
+++ /dev/null
@@ -1,216 +0,0 @@
-# Created by https://www.gitignore.io/api/java,gradle,eclipse,intellij,visualstudiocode
-# Edit at https://www.gitignore.io/?templates=java,gradle,eclipse,intellij,visualstudiocode
-
-### Eclipse ###
-.metadata
-bin/
-tmp/
-*.tmp
-*.bak
-*.swp
-*~.nib
-local.properties
-.settings/
-.loadpath
-.recommenders
-
-# External tool builders
-.externalToolBuilders/
-
-# Locally stored "Eclipse launch configurations"
-*.launch
-
-# PyDev specific (Python IDE for Eclipse)
-*.pydevproject
-
-# CDT-specific (C/C++ Development Tooling)
-.cproject
-
-# CDT- autotools
-.autotools
-
-# Java annotation processor (APT)
-.factorypath
-
-# PDT-specific (PHP Development Tools)
-.buildpath
-
-# sbteclipse plugin
-.target
-
-# Tern plugin
-.tern-project
-
-# TeXlipse plugin
-.texlipse
-
-# STS (Spring Tool Suite)
-.springBeans
-
-# Code Recommenders
-.recommenders/
-
-# Annotation Processing
-.apt_generated/
-
-# Scala IDE specific (Scala & Java development for Eclipse)
-.cache-main
-.scala_dependencies
-.worksheet
-
-### Eclipse Patch ###
-# Eclipse Core
-.project
-
-# JDT-specific (Eclipse Java Development Tools)
-.classpath
-
-# Annotation Processing
-.apt_generated
-
-.sts4-cache/
-
-### Intellij ###
-# Covers JetBrains IDEs: IntelliJ, RubyMine, PhpStorm, AppCode, PyCharm, CLion, Android Studio and WebStorm
-# Reference: https://intellij-support.jetbrains.com/hc/en-us/articles/206544839
-
-# User-specific stuff
-.idea/**/workspace.xml
-.idea/**/tasks.xml
-.idea/**/usage.statistics.xml
-.idea/**/dictionaries
-.idea/**/shelf
-
-# Generated files
-.idea/**/contentModel.xml
-
-# Sensitive or high-churn files
-.idea/**/dataSources/
-.idea/**/dataSources.ids
-.idea/**/dataSources.local.xml
-.idea/**/sqlDataSources.xml
-.idea/**/dynamic.xml
-.idea/**/uiDesigner.xml
-.idea/**/dbnavigator.xml
-
-# Gradle
-.idea/**/gradle.xml
-.idea/**/libraries
-
-# Gradle and Maven with auto-import
-# When using Gradle or Maven with auto-import, you should exclude module files,
-# since they will be recreated, and may cause churn. Uncomment if using
-# auto-import.
-# .idea/modules.xml
-# .idea/*.iml
-# .idea/modules
-# *.iml
-# *.ipr
-
-# CMake
-cmake-build-*/
-
-# Mongo Explorer plugin
-.idea/**/mongoSettings.xml
-
-# File-based project format
-*.iws
-
-# IntelliJ
-out/
-
-# mpeltonen/sbt-idea plugin
-.idea_modules/
-
-# JIRA plugin
-atlassian-ide-plugin.xml
-
-# Cursive Clojure plugin
-.idea/replstate.xml
-
-# Crashlytics plugin (for Android Studio and IntelliJ)
-com_crashlytics_export_strings.xml
-crashlytics.properties
-crashlytics-build.properties
-fabric.properties
-
-# Editor-based Rest Client
-.idea/httpRequests
-
-# Android studio 3.1+ serialized cache file
-.idea/caches/build_file_checksums.ser
-
-### Intellij Patch ###
-# Comment Reason: https://github.com/joeblau/gitignore.io/issues/186#issuecomment-215987721
-
-# *.iml
-# modules.xml
-# .idea/misc.xml
-# *.ipr
-
-# Sonarlint plugin
-.idea/**/sonarlint/
-
-# SonarQube Plugin
-.idea/**/sonarIssues.xml
-
-# Markdown Navigator plugin
-.idea/**/markdown-navigator.xml
-.idea/**/markdown-navigator/
-
-### Java ###
-# Compiled class file
-*.class
-
-# Log file
-*.log
-
-# BlueJ files
-*.ctxt
-
-# Mobile Tools for Java (J2ME)
-.mtj.tmp/
-
-# Package Files #
-*.jar
-*.war
-*.nar
-*.ear
-*.zip
-*.tar.gz
-*.rar
-
-# virtual machine crash logs, see http://www.java.com/en/download/help/error_hotspot.xml
-hs_err_pid*
-
-### VisualStudioCode ###
-.vscode/*
-!.vscode/settings.json
-!.vscode/tasks.json
-!.vscode/launch.json
-!.vscode/extensions.json
-
-### VisualStudioCode Patch ###
-# Ignore all local history of files
-.history
-
-### Gradle ###
-.gradle
-build/
-
-# Ignore Gradle GUI config
-gradle-app.setting
-
-# Avoid ignoring Gradle wrapper jar file (.jar files are usually ignored)
-!gradle-wrapper.jar
-
-# Cache of project
-.gradletasknamecache
-
-# # Work around https://youtrack.jetbrains.com/issue/IDEA-116898
-# gradle/wrapper/gradle-wrapper.properties
-
-### Gradle Patch ###
-**/build/
-
-# End of https://www.gitignore.io/api/java,gradle,eclipse,intellij,visualstudiocode
\ No newline at end of file
diff --git a/phonebook/build.gradle b/phonebook/build.gradle
deleted file mode 100644
index 214ea8ead3ad540e622efeeada4c170ea8c66362..0000000000000000000000000000000000000000
--- a/phonebook/build.gradle
+++ /dev/null
@@ -1,42 +0,0 @@
-/*
- * This file was generated by the Gradle 'init' task.
- *
- * This generated file contains a sample Java project to get you started.
- * For more details take a look at the Java Quickstart chapter in the Gradle
- * User Manual available at https://docs.gradle.org/6.3/userguide/tutorial_java_projects.html
- */
-
-plugins {
- // Apply the java plugin to add support for Java
- id 'java'
-
- // Apply the application plugin to add support for building a CLI application.
- id 'application'
-}
-
-repositories {
- // Use jcenter for resolving dependencies.
- // You can declare any Maven/Ivy/file repository here.
- jcenter()
-}
-
-dependencies {
- // This dependency is used by the application.
- implementation 'com.google.guava:guava:28.2-jre'
-
- // Use JUnit Jupiter API for testing.
- testImplementation 'org.junit.jupiter:junit-jupiter-api:5.6.0'
-
- // Use JUnit Jupiter Engine for testing.
- testRuntimeOnly 'org.junit.jupiter:junit-jupiter-engine:5.6.0'
-}
-
-application {
- // Define the main class for the application.
- mainClassName = 'io.fp.phonebook.App'
-}
-
-test {
- // Use junit platform for unit tests
- useJUnitPlatform()
-}
diff --git a/phonebook/gradle/wrapper/gradle-wrapper.jar b/phonebook/gradle/wrapper/gradle-wrapper.jar
deleted file mode 100644
index 490fda8577df6c95960ba7077c43220e5bb2c0d9..0000000000000000000000000000000000000000
Binary files a/phonebook/gradle/wrapper/gradle-wrapper.jar and /dev/null differ
diff --git a/phonebook/gradle/wrapper/gradle-wrapper.properties b/phonebook/gradle/wrapper/gradle-wrapper.properties
deleted file mode 100644
index 41dfb87909a877d96c3af4adccce4c7a301b55a2..0000000000000000000000000000000000000000
--- a/phonebook/gradle/wrapper/gradle-wrapper.properties
+++ /dev/null
@@ -1,5 +0,0 @@
-distributionBase=GRADLE_USER_HOME
-distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-7.4-bin.zip
-zipStoreBase=GRADLE_USER_HOME
-zipStorePath=wrapper/dists
diff --git a/phonebook/gradlew b/phonebook/gradlew
deleted file mode 100644
index 2fe81a7d95e4f9ad2c9b2a046707d36ceb3980b3..0000000000000000000000000000000000000000
--- a/phonebook/gradlew
+++ /dev/null
@@ -1,183 +0,0 @@
-#!/usr/bin/env sh
-
-#
-# Copyright 2015 the original author or authors.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-# https://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-
-##############################################################################
-##
-## Gradle start up script for UN*X
-##
-##############################################################################
-
-# Attempt to set APP_HOME
-# Resolve links: $0 may be a link
-PRG="$0"
-# Need this for relative symlinks.
-while [ -h "$PRG" ] ; do
- ls=`ls -ld "$PRG"`
- link=`expr "$ls" : '.*-> \(.*\)$'`
- if expr "$link" : '/.*' > /dev/null; then
- PRG="$link"
- else
- PRG=`dirname "$PRG"`"/$link"
- fi
-done
-SAVED="`pwd`"
-cd "`dirname \"$PRG\"`/" >/dev/null
-APP_HOME="`pwd -P`"
-cd "$SAVED" >/dev/null
-
-APP_NAME="Gradle"
-APP_BASE_NAME=`basename "$0"`
-
-# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
-DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
-
-# Use the maximum available, or set MAX_FD != -1 to use that value.
-MAX_FD="maximum"
-
-warn () {
- echo "$*"
-}
-
-die () {
- echo
- echo "$*"
- echo
- exit 1
-}
-
-# OS specific support (must be 'true' or 'false').
-cygwin=false
-msys=false
-darwin=false
-nonstop=false
-case "`uname`" in
- CYGWIN* )
- cygwin=true
- ;;
- Darwin* )
- darwin=true
- ;;
- MINGW* )
- msys=true
- ;;
- NONSTOP* )
- nonstop=true
- ;;
-esac
-
-CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
-
-# Determine the Java command to use to start the JVM.
-if [ -n "$JAVA_HOME" ] ; then
- if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
- # IBM's JDK on AIX uses strange locations for the executables
- JAVACMD="$JAVA_HOME/jre/sh/java"
- else
- JAVACMD="$JAVA_HOME/bin/java"
- fi
- if [ ! -x "$JAVACMD" ] ; then
- die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
-
-Please set the JAVA_HOME variable in your environment to match the
-location of your Java installation."
- fi
-else
- JAVACMD="java"
- which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
-
-Please set the JAVA_HOME variable in your environment to match the
-location of your Java installation."
-fi
-
-# Increase the maximum file descriptors if we can.
-if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
- MAX_FD_LIMIT=`ulimit -H -n`
- if [ $? -eq 0 ] ; then
- if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
- MAX_FD="$MAX_FD_LIMIT"
- fi
- ulimit -n $MAX_FD
- if [ $? -ne 0 ] ; then
- warn "Could not set maximum file descriptor limit: $MAX_FD"
- fi
- else
- warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
- fi
-fi
-
-# For Darwin, add options to specify how the application appears in the dock
-if $darwin; then
- GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
-fi
-
-# For Cygwin or MSYS, switch paths to Windows format before running java
-if [ "$cygwin" = "true" -o "$msys" = "true" ] ; then
- APP_HOME=`cygpath --path --mixed "$APP_HOME"`
- CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
- JAVACMD=`cygpath --unix "$JAVACMD"`
-
- # We build the pattern for arguments to be converted via cygpath
- ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
- SEP=""
- for dir in $ROOTDIRSRAW ; do
- ROOTDIRS="$ROOTDIRS$SEP$dir"
- SEP="|"
- done
- OURCYGPATTERN="(^($ROOTDIRS))"
- # Add a user-defined pattern to the cygpath arguments
- if [ "$GRADLE_CYGPATTERN" != "" ] ; then
- OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
- fi
- # Now convert the arguments - kludge to limit ourselves to /bin/sh
- i=0
- for arg in "$@" ; do
- CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
- CHECK2=`echo "$arg"|egrep -c "^-"` ### Determine if an option
-
- if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then ### Added a condition
- eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
- else
- eval `echo args$i`="\"$arg\""
- fi
- i=`expr $i + 1`
- done
- case $i in
- 0) set -- ;;
- 1) set -- "$args0" ;;
- 2) set -- "$args0" "$args1" ;;
- 3) set -- "$args0" "$args1" "$args2" ;;
- 4) set -- "$args0" "$args1" "$args2" "$args3" ;;
- 5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
- 6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
- 7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
- 8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
- 9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
- esac
-fi
-
-# Escape application args
-save () {
- for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
- echo " "
-}
-APP_ARGS=`save "$@"`
-
-# Collect all arguments for the java command, following the shell quoting and substitution rules
-eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
-
-exec "$JAVACMD" "$@"
diff --git a/phonebook/gradlew.bat b/phonebook/gradlew.bat
deleted file mode 100644
index 62bd9b9ccefea2b65ae41e5d9a545e2021b90a1d..0000000000000000000000000000000000000000
--- a/phonebook/gradlew.bat
+++ /dev/null
@@ -1,103 +0,0 @@
-@rem
-@rem Copyright 2015 the original author or authors.
-@rem
-@rem Licensed under the Apache License, Version 2.0 (the "License");
-@rem you may not use this file except in compliance with the License.
-@rem You may obtain a copy of the License at
-@rem
-@rem https://www.apache.org/licenses/LICENSE-2.0
-@rem
-@rem Unless required by applicable law or agreed to in writing, software
-@rem distributed under the License is distributed on an "AS IS" BASIS,
-@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-@rem See the License for the specific language governing permissions and
-@rem limitations under the License.
-@rem
-
-@if "%DEBUG%" == "" @echo off
-@rem ##########################################################################
-@rem
-@rem Gradle startup script for Windows
-@rem
-@rem ##########################################################################
-
-@rem Set local scope for the variables with windows NT shell
-if "%OS%"=="Windows_NT" setlocal
-
-set DIRNAME=%~dp0
-if "%DIRNAME%" == "" set DIRNAME=.
-set APP_BASE_NAME=%~n0
-set APP_HOME=%DIRNAME%
-
-@rem Resolve any "." and ".." in APP_HOME to make it shorter.
-for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
-
-@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
-set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
-
-@rem Find java.exe
-if defined JAVA_HOME goto findJavaFromJavaHome
-
-set JAVA_EXE=java.exe
-%JAVA_EXE% -version >NUL 2>&1
-if "%ERRORLEVEL%" == "0" goto init
-
-echo.
-echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
-echo.
-echo Please set the JAVA_HOME variable in your environment to match the
-echo location of your Java installation.
-
-goto fail
-
-:findJavaFromJavaHome
-set JAVA_HOME=%JAVA_HOME:"=%
-set JAVA_EXE=%JAVA_HOME%/bin/java.exe
-
-if exist "%JAVA_EXE%" goto init
-
-echo.
-echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
-echo.
-echo Please set the JAVA_HOME variable in your environment to match the
-echo location of your Java installation.
-
-goto fail
-
-:init
-@rem Get command-line arguments, handling Windows variants
-
-if not "%OS%" == "Windows_NT" goto win9xME_args
-
-:win9xME_args
-@rem Slurp the command line arguments.
-set CMD_LINE_ARGS=
-set _SKIP=2
-
-:win9xME_args_slurp
-if "x%~1" == "x" goto execute
-
-set CMD_LINE_ARGS=%*
-
-:execute
-@rem Setup the command line
-
-set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
-
-@rem Execute Gradle
-"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS%
-
-:end
-@rem End local scope for the variables with windows NT shell
-if "%ERRORLEVEL%"=="0" goto mainEnd
-
-:fail
-rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
-rem the _cmd.exe /c_ return code!
-if not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
-exit /b 1
-
-:mainEnd
-if "%OS%"=="Windows_NT" endlocal
-
-:omega
diff --git a/phonebook/settings.gradle b/phonebook/settings.gradle
deleted file mode 100644
index 43621cc760e4afdf4cb9308dd5ac963f116b471d..0000000000000000000000000000000000000000
--- a/phonebook/settings.gradle
+++ /dev/null
@@ -1,10 +0,0 @@
-/*
- * This file was generated by the Gradle 'init' task.
- *
- * The settings file is used to specify which projects to include in your build.
- *
- * Detailed information about configuring a multi-project build in Gradle can be found
- * in the user manual at https://docs.gradle.org/6.3/userguide/multi_project_builds.html
- */
-
-rootProject.name = 'campus'
diff --git a/phonebook/src/main/java/io/fp/phonebook/App.java b/phonebook/src/main/java/io/fp/phonebook/App.java
deleted file mode 100644
index 0e4c991520e2ca813ada9fc12c17969569bcca93..0000000000000000000000000000000000000000
--- a/phonebook/src/main/java/io/fp/phonebook/App.java
+++ /dev/null
@@ -1,32 +0,0 @@
-package io.fp.phonebook;
-
-public class App {
- public static void main(String... args){
- PhoneBook b1 = new PhoneBook();
-
- try {
- b1.createContact("Michi Be", 111, 888, 999);
- b1.createContact("Martin Pat", 222);
- b1.createContact("Michi Be", 333);
- b1.createContact("Martin Pat", 444);
- } catch (Exception e) {
- e.printStackTrace();
- }
-
- System.out.println("Ausgabe Person mit Nummer 222 und restliche Nummern.");
- System.out.println("Name: " + b1.getPerson(222) + " Numbers: " + b1.getPhoneNumbers(b1.getPerson(222)));
- System.out.println();
- System.out.println("Ausgabe gesamtes Buch.");
- System.out.println(b1.getBook());
- System.out.println();
-
- System.out.println("Ausgabe Nummern l�schen von Michi Be.");
- System.out.println(b1.deleteEntriesOfAPerson("Michi Be"));
- System.out.println();
- System.out.println("Ausgabe Nummer 222 l�schen.");
- System.out.println(b1.deleteEntryByPhoneNumber(222));
- System.out.println();
- System.out.println("Ausgabe gesamtes Buch.");
- System.out.println(b1.getBook());
- }
-}
diff --git a/phonebook/src/test/java/io/fp/phonebook/test.keep b/phonebook/src/test/java/io/fp/phonebook/test.keep
deleted file mode 100644
index e69de29bb2d1d6434b8b29ae775ad8c2e48c5391..0000000000000000000000000000000000000000
diff --git a/src/phonebook/App.java b/src/phonebook/App.java
new file mode 100644
index 0000000000000000000000000000000000000000..1ff325c5e41b46cc3ef5b8ecd59d13f4fa7cc0fb
--- /dev/null
+++ b/src/phonebook/App.java
@@ -0,0 +1,32 @@
+package phonebook;
+
+public class App {
+ public static void main(String... args) {
+ PhoneBook b1 = new PhoneBook();
+
+ try {
+ b1.createContact("Michi", 111, 888, 999);
+ b1.createContact("Martin", 222);
+ b1.createContact("Michi", 333);
+ b1.createContact("Martin", 444);
+ } catch (Exception e) {
+ e.printStackTrace();
+ }
+
+ System.out.println("Retrieve name and other numbers of person with number 222");
+ System.out.println("Name: " + b1.getPerson(222) + " Numbers: " + b1.getPhoneNumbers(b1.getPerson(222)));
+ System.out.println();
+ System.out.println("Retrieve entire book");
+ System.out.println(b1.getBook());
+ System.out.println();
+
+ System.out.println("Delete numbers of Michi and print them:");
+ System.out.println(b1.deleteEntriesOfAPerson("Michi"));
+ System.out.println();
+ System.out.println("Delete phone number 222 and print owner name:");
+ System.out.println(b1.deleteEntryByPhoneNumber(222));
+ System.out.println();
+ System.out.println("Retrieve entire book");
+ System.out.println(b1.getBook());
+ }
+}
diff --git a/phonebook/src/main/java/io/fp/phonebook/PhoneBook.java b/src/phonebook/PhoneBook.java
similarity index 67%
rename from phonebook/src/main/java/io/fp/phonebook/PhoneBook.java
rename to src/phonebook/PhoneBook.java
index 5747027f92bd51210f796bee9875dcdf1968a8cc..0272e429e12528b6508b4d41be3b99581682bfd8 100644
--- a/phonebook/src/main/java/io/fp/phonebook/PhoneBook.java
+++ b/src/phonebook/PhoneBook.java
@@ -1,90 +1,100 @@
-package io.fp.phonebook;
+package phonebook;
+
import java.util.*;
/**
- * An object that manages contacts. For this purpose it is using the TreeMap implementation.
+ * An object that manages contacts. For this purpose it is using the TreeMap
+ * implementation.
* A phone book cannot contain duplicate phone numbers (<strong>K</strong>eys),
* but it can contain duplicate persons (<strong>V</strong>alues).
*/
public class PhoneBook {
private SortedMap<Integer, String> book;
-
+
/**
* Initializes the variable {@link book} in the constructor.
*/
public PhoneBook() {
- book = new TreeMap<Integer, String>();
+ book = new TreeMap<Integer, String>();
}
/**
* Creates a new contact entry in the phone book.
* Generates for every key element <tt>phoneNumbers</tt> a map entry.
- * If even a single phone number is already in use in the phone book this method will throw a {@link PhoneBookException}.
+ * If even a single phone number is already in use in the phone book this method
+ * will throw a {@link PhoneBookException}.
* No numbers should be added at all, if a {@link PhoneBookException} is thrown.
*
- * @param person name of the contact person
+ * @param person name of the contact person
* @param phoneNumbers all phone numbers of the contact person
- * @throws PhoneBookException if an entered phone number is already in use. The exception message contains the related number and the person's name which is using this number.
+ * @throws PhoneBookException if an entered phone number is already in use. The
+ * exception message contains the related number and
+ * the person's name which is using this number.
*/
- public void createContact(String person, Integer... phoneNumbers) throws PhoneBookException{
- for(Integer num : phoneNumbers){
- if(book.containsKey(num)){
- throw new PhoneBookException("Number '"+num+ "' is already used by "+book.get(num));
+ public void createContact(String person, Integer... phoneNumbers) throws PhoneBookException {
+ for (Integer num : phoneNumbers) {
+ if (book.containsKey(num)) {
+ throw new PhoneBookException("Number '" + num + "' is already used by " + book.get(num));
}
}
- for(Integer num : phoneNumbers){
- book.put(num, person);
+ for (Integer num : phoneNumbers) {
+ book.put(num, person);
}
}
- /**
+ /**
* Returns the person's name to which the specified phone number is mapped,
* or {@code null} if this phone book contains no mapping for the phone number.
+ *
* @param phoneNumber of the person
- * @return person's name
+ * @return person's name
*/
- public String getPerson(Integer phoneNumber){
+ public String getPerson(Integer phoneNumber) {
return book.get(phoneNumber);
- }
+ }
/**
* Returns a set of all phone numbers of a specified person.
+ *
* @param person specified person
* @return all phone numbers of the person
*/
- public Set<Integer> getPhoneNumbers(String person){
+ public Set<Integer> getPhoneNumbers(String person) {
Set<Integer> foundPhoneNumbers = new HashSet<Integer>();
- for(Map.Entry<Integer,String> entry : book.entrySet()){
- if(entry.getValue().equals(person)){
- foundPhoneNumbers.add((Integer)entry.getKey());
+ for (Map.Entry<Integer, String> entry : book.entrySet()) {
+ if (entry.getValue().equals(person)) {
+ foundPhoneNumbers.add((Integer) entry.getKey());
}
}
return foundPhoneNumbers;
}
/**
- * Deletes the phone book entry which matches the specified phone number and returns the persons's name of the deleted entry,
+ * Deletes the phone book entry which matches the specified phone number and
+ * returns the persons's name of the deleted entry,
* or {@code null} if this phone book contains no mapping for the phone number.
+ *
* @param phoneNumber of the entry which will be deleted
* @return the person's name of the deleted entry
*/
- public String deleteEntryByPhoneNumber(Integer phoneNumber){
+ public String deleteEntryByPhoneNumber(Integer phoneNumber) {
return book.remove(phoneNumber);
}
/**
* Deletes all phone book entries of a specified person.
+ *
* @param person of the entries which will be deleted
* @return the phone numbers of the deleted entry
*/
- public Set<Integer> deleteEntriesOfAPerson(String person){
-
+ public Set<Integer> deleteEntriesOfAPerson(String person) {
+
Set<Integer> removedPhoneNumbers = new HashSet<Integer>();
- for(Map.Entry<Integer,String> entry : book.entrySet()) {
- if(entry.getValue().equals(person)){
- removedPhoneNumbers.add((Integer)entry.getKey());
+ for (Map.Entry<Integer, String> entry : book.entrySet()) {
+ if (entry.getValue().equals(person)) {
+ removedPhoneNumbers.add((Integer) entry.getKey());
}
}
book.keySet().removeAll(removedPhoneNumbers);
@@ -94,12 +104,13 @@ public class PhoneBook {
/**
* Deletes all entries of the phone book.
*/
- public void clearPhoneBook(){
+ public void clearPhoneBook() {
book.clear();
}
/**
* Returns the map of the phone book.
+ *
* @return map with contact entries
*/
public SortedMap<Integer, String> getBook() {
@@ -130,6 +141,4 @@ public class PhoneBook {
return false;
return true;
}
-
-
-}
+}
\ No newline at end of file
diff --git a/phonebook/src/main/java/io/fp/phonebook/PhoneBookException.java b/src/phonebook/PhoneBookException.java
similarity index 94%
rename from phonebook/src/main/java/io/fp/phonebook/PhoneBookException.java
rename to src/phonebook/PhoneBookException.java
index 16868df7c4e1212e84041b3c50f24d230f7e3966..b21d81f10b400badc06b344a3498caa52b098804 100644
--- a/phonebook/src/main/java/io/fp/phonebook/PhoneBookException.java
+++ b/src/phonebook/PhoneBookException.java
@@ -1,4 +1,4 @@
-package io.fp.phonebook;
+package phonebook;
/**
* Thrown to indicate that something in a method of a {@link PhoneBook} has been failed.
*/