outsourced repeating code to own functions created javadoc

.gitignore

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+# mac files
+.DS_Store
+
+# ignore vscode stuff
+.settings
+.settings/
+.project
+.idea/
+
+# ignore other java files
+bin/
+.classpath
+target/
+
+# 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*