java for IB

♨️ IB Java Examination Tool Subset (JETS)

♨️ Foundations of JAVA Programming (PDF)

JAVA 1: Data Types

Data Types (Primitive - non-Primitive)
Basic operations with numbers and texts (...\n)
Constants - Defaults - Twice?
Naming conventions + Comments
ASCI table - char numbers! |Link|
Casting - Widening/Narrowing Casting

♨️ Class presentation |Link|
📋 Java Worksheet #1 |Link|

JAVA 2: Operators in java

Arithmetic operators (+, -, *, /, %)
Assignment Operators (=, +=, -=, *=......)
Comparison Operators (==, !=, >, <, >=, <=)
Logical Operators (&&, ||, !)

♨️ Class presentation |Link|
📋 Java Worksheet #2 |Link|

JAVA 3: Java Strings

String myText = "I am a text";
- String Length - .length()
- toUpperCase() and toLowerCase()
- txt.indexOf("locate")) | .substring()
- String Concatenation +, firstName.concat(lastName)
- Java Special Characters \, n, r, t, b,...
- .equals() | .charAt() | replace () |.compareTo()
- compareToIgnoreCase(String)
- import.util.Scanner;
- myobj.close();

♨️ Class presentation |Link|
📋 Java Worksheet #3 |Link|
🌐 All Java String methods |Link|

JAVA 4: Java Math

Math.max(5, 10); // result 10
Math.min(7,2); // result 2
Math.sqrt(64); // result = 8
Math.pow(2, 4); // result = 16
Math.abs(-4.7); // reult = 4.7
Math.random(); // 0.0 to 1.0
int randomNum = (int)(Math.random() * 101); // 0 to 100
(Math.round(0.60)); // result = 1;

♨️ Class presentation |Link |
📋 Java Worksheet #4 |Link|
🌐 All Java Math Methods |Link|

JAVA 5: Java if...else...

if
else
else if
switch

♨️ Class presentation |Link|
📋 Java Worksheet |---|
🌐 W3Schools: Java If...else... |Link|

JAVA 6: Java Loop

while Loop
do-while Loop
for Loop
Enhanced for Loop in Arrays (for-each Loop)

♨️ Class presentation |Link|
📋 Java Worksheet #6 |Link|
🌐 W3Schools: loop in Java |Link|

JAVA 7: Java Array

String myArray[ ] = {"apple, "banana", "orange"};

♨️ Class presentation |Link|
📋 Java Worksheet #7|Link|
🌐 W3Schools: array in Java |Link|

JAVA 8: Java Methods

Java Methods ✔
Java Method Parameters ✔
Java Method Overloading ✔
Java Scope ✔
Java Recursion (HL Only) ✔

♨️ Class presentation|Link|
📋 Java Worksheet #8a |Link| #8b|Link| #8c|Link|
📋 Java Worksheet 9|Link|
🌐 W3Schools: methods in Java |Link|

JAVA 9: Scanner and IBIO classes

Input in JAVA ➡ import java.util.Scanner;
Output in JAVA ➡ system.out.println();
Input in JAVA ➡ IBIO.inputString("Enter your name: ");
Output in JAVA ➡ BIO.output(userInput);

♨️ Class presentation|Link|
📋 Java Worksheet |---|
🌐 IB Java Examination Tool Subset (JETS) |Link|

JAVA 10: using GUI in netbeans

Building a Java Counter with JFrame in NetBeans.
- Button
- Label
- setText(Integer.toString(myCount));

JAVA 11: using GUI in netbeans #2

Building a Java User Interface with JFrame in NetBeans.
- Button
- Label
- ...equals();
- JFrame Popup
  - JOptionPane.showMessageDialog(null, "Message", "Title", JOptionPane.WARNING_MESSAGE);
  - JOptionPane.showConfirmDialog(null, "Would you like to delete the record?","Delete Confiration!", JOptionPane.YES_NO_OPTION);
  - Documentation |Link|

JAVA 12: using GUI in netbeans #3

Building a Java Number generator with JFrame in NetBeans.
- Button - Label - Java Array
  - btnAverage.setEnabled(true); // Enable the "Average" button
  - Integer.parseInt(); // Convert text to int
  - String.valueOf(), // Convert int to String
  - String[] myArray = new String[5]; // Declare a String array with 5 empty slots
  - ...getText();
  - ...setText();

Java Core Topics

Variables: primitive variable types, text strings, and constants
Data input from the keyboard with the Scanner and IBIO classes
Operators: arithmetic, relational, and logical
Control flow: conditional statements
Control flow: loops
Functions: input and output values, formal and actual parameters
Java objects: methods of the Math, Random numbers
Java objects: methods of String, and StringBuffer classes
Pseudocode methods for collections
Functions: call by value and call by reference
Reading from and writing into text files

Java OOP Topics

Java objects: introduction to Object-Oriented Programming
Variables: instance variables and static variables
Java objects: 1D and 2D arrays
Java programs with command line parameters
Java objects: the ArrayList and the LinkedList classes
Object-Oriented Programming: Encapsulation
Object-Oriented Programming: Inheritance
Object-Oriented Programming: Polymorphism
Method overloading (compile time polymorphism)
Method overriding (run time polymorphism)
The relationships between Java classes, and their UML diagrams

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