Create 02A Objects' methods

ClassName variableName = new ClassName("str1", "str2", int3);

CONSTRUCTOR

System.out.println("<menu item i>");

String[] arrKeys = numbers.keySet().toArray(new String[0]); Arrays.sort(arrKeys);

containsKey get

Create 20. Phone book 2: Searching for a number

public static void addNumber(HashMap<String,String> numbers)

Create 18b. Add numbers to list 2

Create 18a 3 Types Exceptions, TRY-CATCH, throws FileNotFoundException

Rename Week 2: Methods, strings and lists/[GradingIssue] 22. Letter pyramid to Week 2: Methods, strings and lists/[FIXED] 22. Letter pyramid

Create 17b. Read numbers from a file

String row = reader.nextLine(); String[] chunks = row.split(","); Integer.valueOf(chunk);

Scanner reader = new Scanner(new File("fileName.txt")); list.add(reader.nextLine());

Scanner reader = new Scanner(new File("fileName.txt")); list.add(reader.nextLine());

Create 16a Files and exceptions

abs exp log floor max signum negateExact

Math.PI; Math.pow

Create 14b Starsquare

StringBuilder str = new StringBuilder("<urStr>");

r.nextInt(39)

Random.nextInt(upToButNotIncl)

HashMap<String, Integer>; put get containsKey keySet(=k ONLY)

for (String city : cityNTemps.keySet())

HashMap<String, Integer> map = new HashMap<>();

HashMap<String, Integer>; put get containsKey keySet(= k-v pair)

Create 10. Array from list

Create 9b. Sum of array elements

String[] names = new String[16]; arr.length; list.size(); str.length();

newList.addAll(list1); Collections.sort(newList)

"" + someInt; Integer.parseInt(str)

Create 6B. Create a list

ArrayList<String> list = new ArrayList<>();

Collections.min/max, THEN go through list to find secondSmallest

eg change order

get, remove

ArrayList<Integer> lista = new ArrayList<>(); for (int l : pa) lista.add(l);

someMethod(ArrayList<Integer> list)

GradingIssue

equals

equals

Create 1b. Calculator

obj1.equals(obj2)

ArrayList REFERENCE TYPE AND ENVELOPE CLASS

String REFERENCE TYPE

Update Week 2: Methods, strings and lists/22. Letter pyramid

Create 22. Letter pyramid

Rename Week 1: Types, condition clauses and loops/4. Match expressions and results to Week 1: Types, condition clauses and loops/4. Match expressions and results AND DATATYPE

Create 21. Clean up string

Create 20. Doubles