Learnitweb

• Prevent singleton pattern from serialization in Java
• Object cloning in Java
• Comparator in Java
• Comparable in Java
• hashCode method in Java
• Rules of declaring package, import and class in source file
• Create, compile, run and understand Hello World program in Java
• Predefined annotation types in Java
• Packages in Java
• Java legal identifiers, keywords and code conventions
• Random number generation in Java
• What Is RandomAccess Interface?
• Features of Java
• Java – Try with Resources

enum

• enum in Java
• enum in Java – constructor, methods and interface
• Java enum ordinal() method
• Iterating over Enum Values in Java
• Comparing enum members in Java
• What is EnumSet?

Inner Class

• Static Nested Class in Java
• Anonymous Inner Class in Java
• Local class in Java
• Inner class in Java

Annotation

• @Override annotation in Java
• @Deprecated annotation in Java
• Custom annotation in Java
• Annotations in Java – an introduction

Serialization

• Difference between Externalization and Serialization
• Externalization in Java
• Serialization with respect to inheritance
• Custom serialization in Java
• Object graph in Serialization
• Serialization of multiple objects in same file
• static transient field and final transient field
• transient keyword in Java and example
• Serialization and Deserialization example
• Serialization and Deserialization in Java

Collections

• HashSet in Java
• Dequeue in Java
• Stack in Java
• Generics in Java – An introduction

Multithreading

• What is Thread in Java?
• synchronized in Java
• How to create and run a thread in Java
• Race condition in Java with examples
• Thread.join() method in Java with examples
• Java Thread Life Cycle and Thread States
• Thread priority and yield method
• Fork/Join framework in Java
• CyclicBarrier in Java
• CountDownLatch in Java
• Semaphore in Java
• BlockingQueue in Java
• Executor framework in Java – an introduction
• Thread interruption in Java
• An introduction to ThreadLocal in Java
• volatile keyword in Java
• ConcurrentHashMap in Java
• CopyOnWriteArrayList in Java

Java 8

• Spliterator in Java
• Sort a stream in Java
• How to convert Array to Stream?
• Java 8 StringJoiner
• Java LocalDateTime class with examples
• Java LocalTime class with examples
• LocalDate class in Java with examples
• java.time package in Java 8 – Introduction
• Stream forEachOrdered method in Java with example
• Java 8 forEach with examples
• Java 8 Collectors
• Stream flatMap() in Java with examples
• Java 8 stream map() and example
• Java 8 filter() with examples
• Java Stream generate() method with example
• How to create stream in Java 8
• Java 8 Stream – An Introduction
• Method references in Java
• Primitive type functional interfaces
• BiConsumer interface in Java
• BiFunction interface in Java
• BiPredicate interface in Java
• Supplier interface in Java
• Consumer interface in Java
• Function interface in Java 8
• Java 8 Optional
• Java 8 Predicate with example
• main method inside interface
• static methods in interface
• Difference between interface with default method and abstract class or Java 8 interface vs abstract class
• default methods in interface in case of multiple inheritance
• default method in interface – Java 8
• Local variables referenced from a lambda expression must be final or effectively final
• Difference between anonymous inner class and lambda expression
• Java 8 Runnable example using Lambda expression
• How to write and use a lambda expression in Java 8?
• Java Functional Interface
• Java 8 Lambdas – an introduction
• Stream peek() Method in Java
• Concurrency vs Parallelism
• Parallel streams in Java
• Stream.reduce() in Java
• Collectors partitioningBy() method in Java
• Handling time zones in distributed systems

Java 9

• Private methods in Java 9 interfaces
• Compact Strings in Java 9
• Convenience Factory Methods for Collections
• Metaspace – Class Metadata in Java 8
• Java 9 – Explain differences between JAR file and module
• Need of JPMS – Problems before Java 9
• JPMS modularity and module – an introduction
• Java 9 try-with-resources enhancement
• Java 9 Diamond operator enhancement for anonymous class
• Java 9 SafeVarargs Annotation Enhancements
• Indify String Concatenation
• Stream takeWhile method in Java
• Stream dropWhile method in Java
• Stream iterate method in Java
• Stream ofNullable method in Java
• Java module with example
• Accessibility of class with Java module
• requires transitive in java
• requires static in Java
• Module resolution and module path
• Aggregator module in Java
• The guide to jlink in Java
• Java 9 process API updates

Java 10 and above

• Generations and generational garbage collection in Java
• Selecting a garbage collector for application in Java
• Maximum pause-time and throughput garbage collection in Java
• Garbage collection in Java and types of garbage collectors
• Java 10 Local Variable Type Inference
• Optional.orElseThrow()
• Create unmodifiable copy using copyOf method
• Class Data sharing
• Improved Docker Container Integration with Java 10
• HttpClient in Java 11
• String repeat method
• Java isBlank() method
• String lines() method in Java
• Local-Variable Syntax for Lambda Parameters
• String strip() method in Java
• Epsilon: A No-Op Garbage Collector
• The Z Garbage Collector
• Java 11 Single-File Source-Code Programs
• Java 11 Files.readString() and Files.writeString() methods
• Java Predicate.not() method
• Java Flight Recorder
• Compact Number Formatting in Java
• Java Teeing Collectors
• Comparing file with Files.mismatch() method in Java
• Preview feature in Java
• Text Blocks in Java
• Sealed classes in Java
• Record classes in Java
• Java switch expressions
• Virtual threads in Java – An Introduction
• Java carrier thread example