Are You a Java Genius?

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Questions and Answers

What is Java?

  • A programming language (correct)
  • A core library
  • A virtual machine
  • A runtime

What year was Java developed?

  • 1990
  • 1985
  • 2000
  • 1995 (correct)

What is Java's syntax based on?

  • Ruby
  • C (correct)
  • Python
  • JavaScript

What makes Java secure?

<p>It runs in a virtual machine sandbox (A)</p> Signup and view all the answers

What makes Java portable?

<p>It uses Java bytecode (A)</p> Signup and view all the answers

What makes Java high performance?

<p>It uses just-in-time compiler (A)</p> Signup and view all the answers

What is multithreading in Java?

<p>The ability to run multiple threads of activity (A)</p> Signup and view all the answers

What makes Java robust?

<p>All of the above (B)</p> Signup and view all the answers

What does it mean for Java to be platform-independent?

<p>It can run on multiple platforms without recompiling (D)</p> Signup and view all the answers

What is the difference between Java and C++?

<p>Java is platform-independent (A)</p> Signup and view all the answers

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Study Notes

  • Java was developed by Sun Microsystems in 1995.
  • Java is a programming language with a virtual machine, core libraries, and a runtime.
  • Java is simple, secure, portable, high performance, multithreaded, architecture-neutral, robust, distributed, dynamic, and platform-independent.
  • Java's syntax is based on C++ but without complicated features like explicit pointers and operator overloading.
  • Java is secure because it runs in a virtual machine sandbox and has no explicit pointers.
  • Java is portable because it uses Java bytecode that can be carried to any platform.
  • Java is high performance due to the use of just-in-time compiler and optimized bytecode.
  • Java is multithreaded, allowing for concurrent threads of activity.
  • Java is robust due to strong memory management, automatic garbage collection, and exception handling.
  • Java is platform-independent, meaning it can be run on multiple platforms without recompiling.

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