Java language proficiencyAll the exercises are solved using Java 11 - unless stated otherwise.List of SubdomainsIntrodutionStringsBigNumberObject Oriented ProgrammingData StructuresException HandlingAdvancedList of ExercisesSubdomainChallengeMax ScoreMy SolutionIntroductionWelcome to Java!3JavaIntroductionStdin and Stdout I5JavaIntroductionIf-Else10JavaIntroductionStdin and Stdout II10JavaIntroductionOutput Formatting10JavaIntroductionLoops I10JavaIntroductionLoops II10JavaIntroductionDatatypes10JavaIntroductionEnd-of-file10JavaIntroductionStatic Initializer Block10JavaIntroductionInt to String10JavaIntroductionDate and Time15JavaIntroductionCurrency Formatter15JavaStringsStrings Introduction5JavaStringsSubstring5JavaStringsSubstring Comparisons10JavaStringsString Reverse10JavaStringsAnagrams10JavaStringsString Tokens15JavaStringsValid Username Regular Expression20JavaStringsPattern Syntax Checker20JavaStringsTag Content Extractor20JavaStringsRegex25JavaStringsRegex 2 - Duplicate Words25JavaBigNumberBig Integer10JavaBigNumberPrimality Test20JavaBigNumberBigDecimal20JavaObject Oriented ProgrammingInheritanceI5JavaObject Oriented ProgrammingInheritanceII10JavaObject Oriented ProgrammingAbstract Class10JavaObject Oriented ProgrammingInterface10JavaObject Oriented ProgrammingMethod Overriding10JavaObject Oriented ProgrammingMethod Overriding 2 (Super Keyword)10JavaObject Oriented ProgrammingInstanceof keyword10JavaObject Oriented ProgrammingIterator15JavaData Structures1D Array5JavaData Structures2D Array10JavaData StructuresSubarray10JavaData StructuresArrayList10JavaData StructuresMap10JavaData StructuresHashSet10JavaData StructuresSort10JavaData StructuresComparator10JavaData StructuresGenerics15JavaData StructuresList15JavaData StructuresBitSet20JavaData StructuresStack20JavaData StructuresDequeue20JavaData StructuresPriority Queue20JavaData Structures1D Array (part 2)25JavaException HandlingException Handling (Try-catch)10JavaException HandlingException Handling15JavaAdvancedVarargs - Simple Addition15JavaAdvancedReflection - Attributes15JavaAdvancedFactory Pattern15JavaAdvancedSingleton Pattern15JavaAdvancedCan You Access?15JavaAdvancedCovariant Return Types20JavaAdvancedPrime Checker25JavaAdvancedAnnotations25JavaAdvancedLambda Expressions30JavaAdvancedMD530Java