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grc-cohort-22 / derusting Public

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De-rusting Java PR - Jaron#26

Open

Jaronie wants to merge 63 commits intogrc-cohort-22:maingrc-cohort-22/derusting:mainfrom

Jaronie:mainJaronie/derusting:mainCopy head branch name to clipboard

Conversation Commits63 (63)Checks Files changed

Open

De-rusting Java PR - Jaron#26
Jaronie wants to merge 63 commits intogrc-cohort-22:mainfrom
Jaronie:main

Commits

Commits on Mar 21, 2026

Importing Arrays
Jaronie
committed
Added 4 elements into the array with different String variables
Jaronie
committed
Variable storing index 2 value
Jaronie
committed
Length of array stored in int variable
Jaronie
committed
For loop printing each array item
Jaronie
committed
For each loop printing out each array item
Jaronie
committed
Importing Java List
Jaronie
committed
Empty ArrayList created, also import changed to ArrayList
Jaronie
committed
3 elements added to list
Jaronie
committed
Printing index 1 of ArrayList
Jaronie
committed
Using set() to replace an index value
Jaronie
committed
using add() to a value to index 0, extending the arraylist length
Jaronie
committed
Checking if a certain string exists within the list
Jaronie
committed
Iterating using traditional loop, printing values and indexes on separate lines.
Jaronie
committed
importing collections
Jaronie
committed
Sorting the list
Jaronie
committed
Using a for-each loop to iterate the list
Jaronie
committed
HashMap imported
Jaronie
committed
Created HashMap
Jaronie
committed
Type variable changed to Map
Jaronie
committed
Import Map util
Jaronie
committed
Added 3 key pairs in the map
Jaronie
committed
Stored key value into a variable
Jaronie
committed
map size stored into a variable
Jaronie
committed
Replaced second key value
Jaronie
committed
Checking if the map contains a given key
Jaronie
committed
Checking if map contains a given value
Jaronie
committed
Using keySet() to iterate through keys with a for each loop.
Jaronie
committed
Using values() to grab values of map, and storing them in type Integer value
Jaronie
committed
Iterating each entry using Map.Entry type variable for the map, and printing them.
Jaronie
committed
Negative float variable created
Jaronie
committed
Last change: adding print lines under booleans checking for key/value.
Jaronie
committed
Created a remainder variable with modulus
Jaronie
committed
if/else statement checking for an even number.
Jaronie
committed
Using integer division to divide a number.
Jaronie
committed
Printing the result of integer division
Jaronie
committed
Public and private instance variables made in Person
Jaronie
committed
Created a person constructer with String name, and int age parameters.
Jaronie
committed
toString() method created
Jaronie
committed
Instance method birthYear created
Jaronie
committed
Instance of person object created
Jaronie
committed
New instance of Person object
Jaronie
committed
Printing person1 object
Jaronie
committed
Printing person2 object
Jaronie
committed
Storing person1 name into a variable
Jaronie
committed
Storing person1 birthYear into a variable
Jaronie
committed
Printing person1 birthYear
Jaronie
committed
Import java util HashSet
Jaronie
committed
HashSet variable made
Jaronie
committed
MySert -> MySet. Also, added 3 elements to set.
Jaronie
committed
Boolean checking if a String value exists in set.
Jaronie
committed
removing value from set
Jaronie
committed
Iterating over each element, printed on a separate line.
Jaronie
committed
String variable made
Jaronie
committed
New string made from concatenation
Jaronie
committed
char variable finding what character is at index 3
Jaronie
committed
Checking if string contains a substring
Jaronie
committed
Iterating through string to print each character
Jaronie
committed
Importing ArrayList
Jaronie
committed
New ArrayList variable
Jaronie
committed
Multiple string elements added to list
Jaronie
committed
Using join() to join entire arrayList into one string separated by commas
Jaronie
committed
Using .equals() and a boolean to check if two strings are equal
Jaronie
committed

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