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Learning Paths

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Start with a structured path and move from fundamentals to job-ready skills.

Java40 Tutorials

Beginner to Advanced

The most in-demand backend language in Hyderabad's job market — from your first program to interview-level internals.

Core JavaOOPCollectionsMultithreadingJava 8+JVM
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Data AnalyticsComing Soon

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Turn raw data into business decisions with the analyst toolkit.

ExcelSQLPower BIData Visualization
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Data ScienceComing Soon

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Statistics, Python and machine learning with real datasets.

PythonStatisticsMachine LearningProjects
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Modern Track

Practical AI skills for the roles companies are hiring for next.

AI FundamentalsGenerative AILLMsAI Agents
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Start with Java

A Structured Path Through Java

From your first Java program to interview-level concepts — 40 published tutorials across 8 topic clusters.

01Basics9 tutorialsSyntax, variables, operators, loops, arrays and strings — your foundation.VariablesData TypesOperatorsLoopsExplore Cluster →02OOP5 tutorialsThe four pillars every interviewer starts with.Classes & ObjectsInheritancePolymorphismAbstractionExplore Cluster →03Collections11 tutorialsList, Set and Map deeply — including HashMap internals.ListSetMapArrayListExplore Cluster →04Exception Handling2 tutorialsWrite code that fails safely and predictably.try-catch-finallyChecked ExceptionsUnchecked ExceptionsExplore Cluster →05Multithreading4 tutorialsThreads, synchronization and the classic concurrency traps.ThreadsThread LifecycleSynchronizationDeadlockExplore Cluster →06Java 85 tutorialsThe functional style modern Java codebases are written in.LambdaFunctional InterfacesStreamsOptionalExplore Cluster →07JVM & Memory3 tutorialsWhat actually happens when your code runs.JVM ArchitectureMemory ManagementGarbage CollectionExplore Cluster →08Modern Java1 tutorialsRecords, sealed classes and pattern matching.Java 17 FeaturesExplore Cluster →

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Your Learning Journey

01Learn

Understand technical concepts with practical explanations and runnable examples.

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02Practice

Solve logical thinking and coding problems to make concepts stick.

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03Interview

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04Get Job Ready

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Most Searched

Popular Java Tutorials

BasicsWhat is Java?A plain-English introduction to Java: what it is, how it runs, where companies use it, and how you can write your first program today.beginner6 min readBasicsJDK vs JRE vs JVM: What's the Difference?The JDK contains the JRE, which contains the JVM. Here is what each layer actually does, with the compile-and-run flow every interviewer expects you to explain.beginner6 min readBasicsJava Data Types Explained with ExamplesMaster all 8 primitive types, understand reference types, and learn the casting rules that decide whether your Java code compiles, overflows or behaves.beginner7 min readOOPJava OOP Concepts: The Four Pillars ExplainedEncapsulation, inheritance, polymorphism and abstraction explained with one running example, so the four pillars become working knowledge instead of definitions.beginner7 min readCollectionsJava Collections Framework: The Complete MapOne mental map of the entire Collections Framework: the interface hierarchy, the workhorse implementations, complexity trade-offs, and the rules for picking the right one.intermediate6 min readCollectionsHashMap in Java: Operations, Iteration and Best PracticesA practical guide to HashMap in Java — every core operation, all the iteration patterns, and the best practices that keep production code fast and bug-free.intermediate5 min readCollectionsHow HashMap Works Internally in JavaThe complete internal story of Java's HashMap — hash computation, bucket indexing, collision handling, treeification at threshold 8, and the 0.75 load factor resize.advanced9 min readMultithreadingMultithreading in Java: Threads, Runnable and ExecutorsHow to run code on multiple threads in Java — from extending Thread, to Runnable lambdas, to the ExecutorService pools you will actually use at work.intermediate5 min readJava 8Java Streams: filter, map, collect and BeyondFrom your first filter-map-collect pipeline to groupingBy, reduce and parallel streams — a practical, interview-focused guide to the Java Stream API.intermediate5 min readJVM & MemoryJava Memory Management: Heap, Stack and MetaspaceWhere do your objects, local variables and class metadata actually live? A practical map of JVM memory with runnable examples and the flags that control each region.advanced7 min read
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