Introduction

Advanced Programming

SUT • Spring 2019

Outline

  • Course information

  • Programming paradigm

  • Introduction to Java

  • Java History

  • Java Characteristics

Course Information

Topics

  • Introduction to java language

    • Java syntax, operators, conditions, loops, …

    • Strings

    • Arrays

  • Object Oriented Programming

    • Interface

    • Inheritance

    • Polymorphism

  • Software Quality

    • Refactoring

    • Test

    • Pattern

Topics

  • Advanced Java Programming

    • Exception Handling

    • Generics

    • Collections

    • Threads

    • Files and Streams

    • Networking

    • Reflection

    • ...

Grades

Final Exam 5 points
Midterm Exam 3 points
Quizzes/Take Homes 2 points
Home work 4 points + (20% bonus)
Project 6 points + (20% bonus)

Resources

Tutorials

Programming paradigm

Programming paradigm

  • Imperative

    • state the order in which operations occur

    • they allow side effects

#include <iostream>

int n;

int function_one(){
  n += 1;
  n *= 2;
}

int function_two(){
  n *= 3;
}

int main(){
  cin >> n;
  function_one();
  function_two();
  cout  << n << endl;
  return 0;
}

Programming paradigm

from functools import reduce


items = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]

def map_function(x):
    return x * x

def filter_function(x):
    return x % 2 == 0

def reduce_function(x, y):
    return x + y

filtered_items = filter(filter_function, items)
mapped_items = map(map_function, filtered_items)
print(reduce(reduce_function, mapped_items))

Programming paradigm

  • Declarative

    • do not state the order in which to execute

<!DOCTYPE html>
<html>
  <head>
    <title>This is a title</title>
  </head>
  <body>
    <p>Hello world!</p>
  </body>
</html>

Programming paradigm

  • Object Oriented

    • code is organized into objects that contain state

    • States only modified by the code that is part of the object





 

class Number{
  private int a = 0;

  public void add(int b) {
    this.a += b;
  }
}

Java History

Java History

  • Java was created in 1991

    • by James Gosling in Sun Micro systems

  • Initially called Oak

    • in honor of the tree outside Gosling's window

  • Its name was changed to Java

    • because there was already a language called Oak.

  • Sun Micro systems released the first public implementation as Java 1.0 in 1995

  • Java syntax is similar to C and C++.

Java Motivation

  • The need for platform independent language

  • To be embedded in various consumer electronic products

    • like toasters and refrigerators

  • Platform independent?!

    • Hardware

    • Operating System

Java Motivation

  • At the same time, the World Wide Web and the Internet were gaining popularity.

  • Java could be used for internet programming.

  • Why?

    • Platform independence

  • Creation of Applets

The Java technology

  • A programming language

    • Java can create all kinds of applications

  • A development environment

    • A compiler (javac)

    • An interpreter (java)

    • A documentation generator (javadoc)

    • …

  • Compare it to C++

High-Level Languages

Java Virtual Machine

Compile and Execution Stages

  • Compare to C++ and Assembly

  • .NET Framework

Java is Popular

  • Some reports on programming languages popularity

  • According to

    • Job advertisements

    • Book sales

    • Finding code on the web

    • …

  •  

Java is Popular

Java is Popular

Characteristics of Java

  • Java is simple

  • Java is object-oriented

  • Java is architecture-neutral

  • Java is portable

  • Java is interpreted

  • Java is multi threaded

  • Java is secure

  • Java is robust

First Example

  • Create a file named First.java

    • Java class files have .java extension

    • Note to naming convention

  • Copy this lines to the file

    • Note: File name and class name should be the same.

public class First{
    public static void main(String[] args) {
        System.out.println("Hello World!");
    }
}

TODO

  • Download and install JDK

    • JDK 9

  • Write a program that prints your name on the console

  • Compile and run the program

Title Text

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