You can have this printed for the final

Make classes:

• name instance variables
  • use instance variables as this.variable name
• encapsulate with private (fence off anyone of another class from ever using these directly)
• create constructors: public methodname (type var, type var){ }
  • constructors are special methods with no return type and methodname the same as the class name
• methods using "this" are not static
  • static means the method cannot use instance variables (cuts off "this")
  • public [static] returnType methodname (type var, type var){ }

Use classes

• Instances: Scanner, Point, DecimalFormatter, Random, plus classes you create
• Fully Static classes: Math
• Create instances using constructor:
  • classname variable = new classname(var, var);
• Call methods of an instance:
  • variable = object identifier.methodname(var, var);
    
• if the method is not static, you cannot call it from [class ], you must use [object identifier].

Arrays

• One element (value) per index
• index starts at 0
• Create array variable type with type[ ] variable_name
• Fill with a new array with variable_name = new type[ size ]
• Access element with variable_name [ index ];
• get length with variable_name.length;

• Define a method

  public static return_type method_name (type parm1, type parm2)
  {
  ...
  ...
  return expression;
  }

• Call a method:
  • object_or_class.method_name(parm1, parm2);
  • Call Math methods (and save their results into variables)
    • absolute value ex: myDoubleVar= Math.abs(#);
    • random ex: myDoubleVar = Math.random();
    • minimum: Math.min(#,#)
    • maximum: Math.max(#,#)
    • raise to a power: Math.pow(#,#) : Note: The first number is raised to the second number
      
    • knows PI and E
• Setup to read something from the screen:
  • In Java: there are 2 commands needed:
    
  • before the class starts, import the scanner class using: import java.util.Scanner;
  • inside the method, create a scanner object using: Scanner kbd = new Scanner(System.in);
• Read something from the screen:
  • example to get the whole line: myStringVar = kbd.nextLine();
  • example to get the next word: myStringVar = kbd.next();
  • example to get the next double: mydoubleVar = kbd.nextDouble();
  • example to get the next int: myIntVar = kbd.nextInt();
    
• Random - 
  
  import java.util.Random;
  Call Random Generator constructor : Random myGen = new Random();
  Ask your random generator for a new random number from 0 to int: myGen.nextInt(some int);

• Graphic - writing on Fang's canvas
  

To set up fang:

import fang2.core.*;
import fang2.sprites.*;
import java.awt.*;
import java.awt.geom.*;

Your class must extend GameLoop ex: public class Wackadot extends GameLoop

Steps to add shapes to the panel:

• Override startGame()

  @Override
  public void startGame()

• Create a Sprite (a shape): Sprite yourvar = new OvalSprite(.1,.1) // RectangleSprite(l,w) // LineSprite(x,y, x,y)
• Adjust location - setLocation(x,y)
• Adjust color - setColor(Color.RED)
• Adjust scale - setScale (.1) (1 is larger, .01 is smaller)
• Add your shape to the canvas - canvas.addSprite(yourvar)

• Structures:
  • for (starter; test; incrementer){}
  • while(test){}
    
  • if (test) {}else if (test) {} else {}
  • || means OR
  • && means AND