amitshekhariitbhu/from-java-to-kotlin

Features

• Java-to-Kotlin Syntax Comparisons - Provides side-by-side comparisons of Java and Kotlin syntax for every major language construct.
• Java and Kotlin Boilerplates - Pairs each Java language feature with its idiomatic Kotlin counterpart for migration.
• Collection Filtering - Applies lambda-based filter and forEach directly on collections, replacing Java streams.
• Data Class Generators - Demonstrates Kotlin data class syntax that auto-generates equals, hashCode, toString, and copy methods.
• Kotlin Data Class Declarations - Shows Kotlin data class declarations that auto-generate equals, hashCode, toString, and copy.
• Safe Casting - Shows Kotlin's safe-cast operator combining type checking and smart casting.
• Safe Navigation Operators - Demonstrates Kotlin's safe-call operator and let block for chaining nullable operations.
• Data Class Copy Functions - Demonstrates Kotlin's data class copy() function for cloning with property overrides.
• Multi-Line - Shows Kotlin's triple-quoted raw strings for multi-line literals with margin trimming.
• Cheat Sheets - Offers a compact reference for expressing common Java patterns in Kotlin.
• Side-by-Side Comparisons - Presents Java and Kotlin code in parallel columns for direct syntax comparison.
• Single-Expression Function Bodies - Demonstrates Kotlin's single-expression function syntax with inferred return types.
• Destructuring Assignments - Shows Kotlin destructuring declarations for unpacking collections and data classes into variables.
• Instance Initialization - Compares Java instance initializers with Kotlin's init blocks for class construction logic.
• Default Parameter Assignments - Compares Java overloaded methods with Kotlin's default parameter values in function signatures.
• Kotlin Extension Functions - Shows Kotlin extension functions that add methods to existing classes without inheritance.
• Collection Pipeline Lambdas - Shows Kotlin's lambda-based collection pipelines as a replacement for Java stream chains.
• Kotlin Resources - Teaches Kotlin by presenting familiar Java code alongside its Kotlin translation.
• Range Expression Conditions - Shows Kotlin's in operator and range expressions for concise conditional checks.
• String Interpolation - Compares Java string concatenation with Kotlin's dollar-sign string interpolation.
• Range-Based Loop Iteration - Compares Java for-loops with Kotlin's range expressions, downTo, until, and step modifiers.
• When Expression Pattern Matching - Demonstrates Kotlin's when expression for pattern matching with ranges and conditions.
• Enum Property Definitions - Demonstrates Kotlin enums with constructor parameters and properties, replacing Java field-based enums.
• Safe-Call Null Operators - Demonstrates Kotlin's safe-call operator and let block for concise nullable value handling.
• Mutable and Immutable Declarations - Shows Kotlin's var and val keywords for mutable and immutable variable declarations.
• Ternary Expression Evaluators - Provides side-by-side comparisons of Java ternary operators and Kotlin if-else expressions.
• Collection Creation Utilities - Use listOf, mapOf, and the to infix function to build lists and maps without explicit constructors.
• Collection Sorting Utilities - Uses sortedWith and lambda-based comparators to sort lists, replacing Java's Collections.sort.
• Anonymous Object Expressions - Shows Kotlin's object expression for creating anonymous class instances.
• Named Bitwise Functions - Demonstrates Kotlin's named functions for bitwise operations as an alternative to symbolic operators.

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