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Jul 7, 2023 · Download or read online over 200 Java programming interview questions and answers for freshers in PDF format. Learn about basic, OOPs, JDBC, Spring, Hibernate, JSP, exception and thread concepts in Java.
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- What Is Java?
- State Some Common Features of Java?
- Why Is Java called An Independent Language?
- Is Java Purely An Object-Oriented Language?
- How Is Java Different from C++?
- What Is A Java Virtual Machine?
- What Is A Java Development Kit?
- What Is The Java Runtime Environment?
- What Is An Array List in Java?
- What Is Vector in Java?
Java is a high-level programming language used to build and develop many software applications ranging from small to large scale. It is an object-oriented programming language and has constantly evolved since its inception. Java is easy to learn and is available for free to download, and developers can access all the related tools with no additiona...
Following are some uses of Java: 1. It is simple and comfortable to use. 2. It comes compiled and interpreted. 3. It is platform-independent. 4. It is object-oriented. 5. It is robust in nature and eliminates errors at the time of runtime. 6. It is secure. 7. It is dynamic. 8. It is extensible. To gain complete knowledge about Java features Java Tr...
Java programming language is developed in a manner where it is independent of any external hardware or software. This is because the compiled code in Java is a byte code that can run on any and every operating system. The program is written in a language- a source code that can be read by humans, and the compiler translates it into the executable c...
No, Java is not a pure object-oriented language. A pure object-oriented language is a language that treats everything within the program as objects. This is not the case with Java because it supports all primitive data types such as float, char(characters), long, bool(booleans), and int(integers) and considers them as non-objects. Another reason wh...
Following are the main differences between Java and C++ 1. C++ is a platform-dependent language, and Java is not. 2. C++ requires the compilation of code, and Java doesn’t. 3. C++ codes are not portable as they need to be compiled on each platform, while Java doesn’t. 4. The management of memory in Java is in control of the system, but C++ allows t...
The run time engine which allows the source code into an executable machine language is called Java Virtual Machine. It is termed “virtual” because of its abstract implementation in software on top of a “real” operating system. It allows the program compiled to be portable and used on any platform, and it consists of both the compiler and the inter...
Java development kit is an environment for software development that is essential for developing Java applications as well as running them. It includes tools for testing programs. Many Java development kits are available for usage, such as Oracle, Open, IBM J9 JDK, etc. The process of installing and setting up the Java Development Kit is easy and q...
The set of components required for developing and running a program is called Java Runtime Environment. It acts as a translator or a facilitator between the operating system and the Java program. It also provides a platform for creating and deploying Java applications.
A resizable array in Java that provides us with dynamic options of arrays is called an array list. It doesn’t need any specifications of size while creating. It also allows the user to access the list randomly. It is helpful in programs where a lot of manipulation is needed.
Vector is a kind of dynamic array (two-dimensional) that can grow or shrink on its own. This means when elements are added to it, they will grow, and when elements are removed, they will reduce or shrink. A vector element can be accessed with the help of an integer index. Vectors are synchronized in nature. This means that a code can be accessed on...
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- What is Java? Explain its meaning and definition. It is one of the most popular programming languages today, with its role in the development of web applications, mobile apps, software, gaming systems, as well as server-side technologies.
- The syntax of Java is based on which programming language? C and C++ programming are the base of the Java syntax.
- How is Java platform independent? Among the list of Java interview questions, you can be asked why Java is called platform independent. You must be ready with the correct answer.
- When was Java developed? Java was developed in the year 1991.
Jun 26, 2024 · Find 200+ core Java interview questions for freshers and experienced professionals with explanations and examples. Learn about Java features, concepts, OOP, multithreading, JVM, JIT, and more.
Mar 11, 2024 · Download PDF of 2024 Core Java interview questions and answers for freshers, intermediate and experienced programmers. Learn about Java fundamentals, OOPs, collections, multithreading, exceptions and more.
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Find the list of 300 core Java interview questions with short and to-the-point answers. The questions are categorized in basics, OOPs, string handling, multithreading, collection, JDBC, etc.
