Java Tutorial
Java is a high-level, object-oriented programming language developed by Sun Microsystems (now owned by Oracle Corporation) in the mid-1990s. It was designed to be simple, platform-independent, and secure, making it suitable for a wide range of applications, from desktop software to web development and enterprise systems.
One of the key features of Java is its "write once, run anywhere" principle, which means that Java code can be compiled into bytecode that can run on any Java Virtual Machine (JVM), regardless of the underlying operating system. This portability has contributed to Java's widespread adoption and popularity.
Java follows an object-oriented programming (OOP) paradigm, which emphasizes the organization of code into reusable objects that interact with each other. This approach promotes code reusability, modularity, and maintainability.
Java comes with a vast standard library, providing pre-built classes and methods that developers can leverage to simplify common programming tasks. The standard library includes modules for input/output operations, networking, graphical user interfaces, database connectivity, and more.
Furthermore, Java has a strong emphasis on security, with built-in features such as automatic memory management (garbage collection) and strict access control mechanisms. These features help prevent common programming errors and enhance the overall stability and security of Java applications.
Java has been widely adopted in various domains, including enterprise software development, Android app development, web development (Java Servlets, JavaServer Pages, and JavaServer Faces), scientific and numerical computing, and more. It has a large and active community of developers, which contributes to the availability of libraries, frameworks, and resources to support Java development.
Our primary objective is to develop a comprehensive and user-friendly resource that effectively empowers Java developers, regardless of their skill level. We highly value your feedback as it plays a crucial role in assisting us in accomplishing this goal. We encourage you to reach out to us without hesitation to share any suggestions or ideas you may have. By working together, we can consistently enhance our platform and deliver a valuable learning experience for the entire Java development community.
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- What is the difference between JDK and JRE?
- What gives Java its 'write once and run anywhere' nature?
- What is JVM and is it platform independent?
- What is Just-In-Time (JIT) compiler?
- What is the garbage collector in Java?
- What is NullPointerException in Java
- Difference between Stack and Heap memory in Java
- How to set the maximum memory usage for JVM?
- What is numeric promotion?
- Why do we need Generic Types in Java?
- What does it mean to be static in Java?
- What are final variables in Java?
- How Do Annotations Work in Java?
- How do I use the ternary operator in Java?
- What is instanceof keyword in Java?
- How ClassLoader Works in Java?
- What are fail-safe and fail-fast Iterators in Java
- What are method references in Java?
- "Cannot Find Symbol" compile error
- Difference between system.gc() and runtime.gc()
- How to convert TimeStamp to Date in Java?
- Does garbage collection guarantee that a program will not run out of memory?
- How setting an Object to null help Garbage Collection?
- How do objects become eligible for garbage collection?
- How to calculate date difference in Java
- Difference between Path and Classpath in Java
- Is Java "pass-by-reference" or "pass-by-value"?
- Difference between static and nonstatic methods java
- Why Java does not support pointers?
- What is a package in Java?
- What are wrapper classes in Java?
- What is singleton class in Java?
- Difference between Java Local Variable, Instance Variable and a Class Variable?
- Can a top level class be private or protected in Java
- Are Polymorphism , Overloading and Overriding similar concepts?
- How to Use Locks in Java
- Why Multiple Inheritance is Not Supported in Java
- Why Java is not a pure Object Oriented language?
- Static class in Java
- Difference between Abstract class and Interface in Java
- Why do I need to override the equals and hashCode methods in Java?
- Why does Java not support operator overloading?
- What’s meant by anonymous class in Java?
- Static Vs Dynamic class loading in Java
- Why am I getting a NoClassDefFoundError in Java?
- How to Generate Random Number in Java
- What's the meaning of System.out.println in Java?
- What is the purpose of Runtime and System class in Java?
- The finally Block in Java
- Difference between final, finally and finalize
- What is try-with-resources in java?
- What is a stacktrace?
- Why String is immutable in Java ?
- What are different ways to create a string object in Java?
- Difference between String and StringBuffer/StringBuilder in Java
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- How do I convert String to Date object in Java?
- How do I create a Java string from the contents of a file?
- What actually causes a StackOverflow error in Java?
- Why is char[] preferred over String for storage of password in Java
- What is I/O Filter and how do I use it in Java?
- Serialization and Deserialization in Java
- Understanding transient variables in Java
- What is Externalizable in Java?
- What is the purpose of serialization/deserialization in Java?
- What is the Difference between byte stream and Character streams
- How to append text to an existing file in Java
- How to convert InputStream object to a String in Java
- What is the difference between Reader and InputStream in Java
- Introduction to Java threads
- What is synchronization Java?
- Static synchronization Vs non static synchronization in Java
- Deadlock in Java with Examples
- What is Daemon thread in Java
- Difference between implements Runnable and extends Thread in Java
- What is the volatile keyword in Java
- What are the basic interfaces of Java Collections Framework
- What are the differences between ArrayList and Vector in Java
- What is the difference between ArrayList and LinkedList?
- What is the difference between List and Set in Java
- Difference between HashSet and HashMap in Java
- Difference between HashMap and Hashtable in Java?
- How does the hashCode() method of java works?
- Difference between capacity() and size() of Vector in Java
- What is a Java ClassNotFoundException?
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