Core Java
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Analyze Offline Java Heap Dumps
Java Heap Dumps are snapshots of the memory of a Java process at a particular moment in time. They contain…
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BigInteger multiply vs parallelMultiply
In Java, the BigInteger class in the java.math package is commonly used for handling large integers that exceed the range…
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Memory Management Philosophy: JVM’s Garbage Collection vs JavaScript’s Hidden Costs
Memory management represents one of the most fundamental differences between the JVM and JavaScript runtimes. While both handle memory automatically,…
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The Framework Lifecycle: Java’s Enterprise Standards vs JavaScript’s Flavor of the Month
In the world of enterprise software development, two distinct philosophies govern how frameworks evolve and how developers adopt them. Java’s…
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Fixing the JSONObject Begin With { Error in Java
JSON handling is a core part of modern Java applications, especially when working with REST APIs, configuration files, logging frameworks,…
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How to Resolve the Java IOException: Invalid Keystore Format Error
Working with keystores is a common task for Java developers, especially when configuring SSL/TLS connections or securing sensitive data. A…
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Handling JPA NoResultException When No Entity Is Found
In JPA or Hibernate, the runtime error javax.persistence.NoResultException: No entity found for query occurs when Query.getSingleResult() or TypedQuery.getSingleResult() expects exactly one result,…
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Java JSON to POJO Conversion
JSON is a lightweight format used for data exchange between systems. In Java, mapping JSON to a POJO makes your…
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Random Key, Value, and Entry in Java HashMap
In Java, HashMap is one of the most commonly used data structures for storing key-value pairs. However, unlike lists, a…
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