Computer Systems Topic – JVM and Java Bytecode Dr. Mian M. Hamayun M.M.Hamayun@cs.bham.ac.uk Credits to: Ata Kaban & Steve Vickers Lecture Objectives Develop a basic understanding how Java Virtual Machine works and what is bytecode Understand the role of stack frames in method Calls Understand the mapping of high-level Java code to low level Bytecode […]
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Computer Systems Week 3 (part 1) Compilation, Interpretation & Overview of Java Virtual Machine Lecture Objective To introduce the basic concepts of compilation, interpretation and Java Virtual Machine. Slide #2 of 38 Lecture Outline u Levels of Programming Languages u High Level to Low Level Translation u High Level Program Execution u Compilation vs. Interpretation
Operating System Structures & User Interface Lecture Objective / Overview In this lecture, we shall see: uOperating System Services uSystem Calls / OS Relationship uOS Design and Implementation uOperating System Structure uUser Classes & Interfaces Slide #2 of 38 What is part of an Operating System? u When you install an OS, what do you
THE EXPERT’S VOICE® IN JAVA Java Design Patterns A Tour with 23 Gang of Four Design Patterns in Java Vaskaran Sarcar Java Design Patterns A Tour of 23 Gang of Four Design Patterns in Java Vaskaran Sarcar Java Design Patterns: A tour of 23 gang of four design patterns in Java Copyright © 2016 by
#I CMPSC 461: Programming Language Concepts Instructor: Danfeng Zhang W369 Westgate Building TAs and LAs Teaching Assistants: • Zeyu Ding (Head TA, dxd437@psu.edu) • Ashish Kumar (azk640@psu.edu) • Madhav Deshpande (mzd574@psu.edu) • Namitha Nambiar (nmn5265@psu.edu) Learning Assistants: • Liang Leo (hql5432@psu.edu) • Jianyu He (jvh6056@psu.edu) Office hours will be announced before next week Course Mode:
Asymptotic Analysis of Algorithms EECS2030 B: Advanced Object Oriented Programming Fall 2019 CHEN-WEI WANG Measuring “Goodness” of an Algorithm 1. Correctness : ○ Does the algorithm produce the expected output? ○ Use JUnit to ensure this. 2. Efficiency: ○ Time Complexity: processor time required to complete ○ Space Complexity: memory space required to store data
Asymptotic Analysis of Algorithms EECS2030 B: Advanced Object Oriented Programming Fall 2018 CHEN-WEI WANG Algorithm and Data Structure ● A ○ A systematic way to store and organize data in order to facilitate access and modifications ○ Never suitable for all purposes: it is important to know its strengths and limitations ● A well-specified computational
COMP 250 INTRODUCTION TO COMPUTER SCIENCE Week 3-1: Errors, exceptions, and try catch blocks Giulia Alberini, Fall 2020 WHAT ARE WE GOING TO DO IN THIS VIDEO? Errors and Exceptions Try/catch blocks KIND OF ERRORS Stylistic Errors The functionality of your code is not affected. Your code is hard to read.
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COMP 250 INTRODUCTION TO COMPUTER SCIENCE Week 13-1 : Maps Giulia Alberini, Fall 2020 Slides adapted from Michael Langer’s WHAT ARE WE GOING TO DO IN THIS VIDEO? Maps MAP (MATHEMATICS) “domain” A map is a set of pairs { (𝑥, 𝑓(𝑥)) }. “codomain” Each 𝑥 in domain maps to exactly one 𝑓(𝑥) in
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COMP 250 INTRODUCTION TO COMPUTER SCIENCE Week 4-4 : OOD7 Polymorphism Giulia Alberini, Fall 2020 WHAT ARE WE GOING TO DO IN THIS VIDEO? OOD7 instanceof Intro to Polymorphism Abstract Classes and Methods A LITTLE ABOUT instanceof The instanceof operator is used to test whether an object is an instance of the
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