Java

Java Interview Questions and Answers 1 | Basic Level – PLM Developer

Here are the few basic level Java Interview Questions and Answers. In this post-interview, questions started with OOP’s questions because Object-Oriented Programming System knowledge is the basics to understand programming languages like C++, Java, and Python. The interview questions and answers provided in this post mostly useful for freshers and 1-2 experienced candidates. Java Interview …

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Graph Data Structure in Java – PLM Developer

In mathematical terminology, the Graph is a pictorial representation of or a diagram represents data. The graph is a non-linear data structure. Hierarchical data structure. The graph data structure contains vertices and edges. In this data, structure vertices mean Nodes and edges means a relationship between two nodes. The connection between Nodes is called edges. …

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Vector Class In Java | Methods Of Vector Class | PLM Developer

Vector is a resizable array in java. Unlike arrays, there is no size limit for Vector. Vector adjusts it’s capacity automatically while adding or removing the objects at runtime. Hence it is known as a dynamic array. Vector is a class that extends AbstractList and implements List interface. The behavior of Vector: Vector maintains insertion …

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ArrayList Class in Java | PLM Developer

ArrayList is a resizable array in java. Unlike arrays, there is no size limit for ArrayList. ArrayList adjusts it’s capacity automatically while adding or removing the objects at runtime. Hence it is known as a dynamic array. ArrayList is a class that extends AbstractList and implements List interface. The Behavior of ArrayList: ArrayList maintains insertion …

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What is Static | Static keyword in Java | PLM Developer

static is a keyword in java applicable for variables, methods, and nested classes. A static method belongs to the class itself; hence it is also referred to as a class method. A static method cannot access non-static methods or variables of a class. Local variables cannot declare as static variables. Static Method: If a method …

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What is Exception | Exception Handling in Java | PLM Developer

An exception is an unwanted or unexpected event. It pretends the normal flow of the program instructions, which can cause the application to stop abnormally. The Exception may occur due to developing mistakes by writing code, or the user enters invalid data. Exception Hierarchy: Throwable class is the root class for all classes in Exception. …

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