16 Questions
What is a similarity between Java and C/C++?
Syntax
What is a benefit of Java's formal OOP type system?
Better code structure and consistency
Why is Java considered network-friendly?
Due to built-in networking operations
What is a benefit of Java's robustness?
Improved security against malicious code
What does the JVM 'verifier' check for?
Code structure and correctness
What is the purpose of Java's dynamic checking?
To detect and prevent common bugs and security problems
Why does Java have slightly worse performance than C?
Due to its additional checking for errors
What is a benefit of Java's memory management?
Improved security against buffer overflow
What led to a completely new way of looking at software development?
The massive growth of the Internet and the World-Wide Web
What were some of the limitations of C and C++?
They were compiled, had no robust memory model, and no garbage collector
What is one of the ways Java makes things easier for the programmer?
By putting more work on the CPU
What is one of the original Java buzzwords?
Simple
What is the core language of Java responsible for?
Handling variables, arrays, and objects
What is the role of the JVM in Java?
To run the core language
What is one of the benefits of Java's standard library classes?
They provide off-the-shelf code to perform basic tasks
What is the result of Java programmers having access to a large set of standard library classes?
They are more productive
Study Notes
Java Features
- Java emerged in 1995 as a response to the growth of the Internet and World-Wide Web, catering to the need for software that can run on different platforms like Windows, Linux, and Solaris.
Design Goals of Java
- Java aimed to address the limitations of languages like C and C++, which had compiled, no robust memory model, no garbage collector, and limited support of built-in libraries.
Java Buzzwords
- Java is described as a simple, object-oriented, distributed, interpreted, robust, secure, architecture-neutral, portable, high-performance, multithreaded, and dynamic language.
Java Language and Libraries
- Java consists of two parts: the core language (variables, arrays, objects) and the libraries (standard library classes that provide "off the shelf" code).
- The Java Virtual Machine (JVM) runs the core language.
- The core language is simple enough to run on small devices like phones, smart cards, and PDAs.
- Java libraries include useful built-in classes like String, ArrayList, HashMap, StringTokenizer, and Date.
Simple
- Java has a similar syntax to C/C++, but is simpler with no operator overloading, no pointers, and no multiple inheritance.
- Java's memory management is simpler than C or C++.
Object-Oriented
- Java is fundamentally based on object-oriented programming (OOP) notions of classes and objects.
- Java uses a formal OOP type system that must be obeyed at compile-time and run-time.
Distributed/Network Oriented
- Java is network-friendly due to its portable, threaded nature, and built-in networking operations in the Java libraries.
Robust/Secure/Safe
- Java is robust, secure, and safe, with features like:
- Verification of code structure by the JVM "verifier" to prevent unintentional errors and malicious code.
- Dynamic checking at runtime for pointer and array access to prevent memory errors.
- Prevention of common bugs and security problems like buffer overflow.
- Easier debugging due to runtime checks that catch errors.
Introduction to Java language features, covering design goals and platform independence.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
