Uploaded September 2025 | Updated September 2026, 2 weeks ago
#python #coding #programming
A Pandas DataFrame is a two-dimensional, tabular data structure that works like a spreadsheet with rows and columns.
#python #coding #programming
A Pandas DataFrame is a two-dimensional, tabular data structure that works like a spreadsheet with rows and columns.

![Learn Java getters and setters in 10 minutes! 🔐
#java #javatutorial #javacourse
public class Main {
public static void main(String[] args) {
// They help protect object data and add rules for accessing or modifying them.
// GETTERS = Methods that make a field READABLE.
// SETTERS = Methods that make a field WRITEABLE.
Car car = new Car(Charger, Yellow, 10000);
car.setColor(Blue);
car.setPrice(5000);
System.out.println(car.getColor() + + car.getModel() + + car.getPrice());
}
}
public class Car {
private String model;
private String color;
private int price;
Car(String model, String color, int price){
this.model = model;
this.color = color;
this.price = price;
}
String getModel(){
return this.model;
}
String getColor(){
return this.color;
}
String getPrice(){
return $ + this.price;
}
void setColor(String color){
this.color = color;
}
void setPrice(int price){
this.price = price;
}
} Learn Java getters and setters in 10 minutes! 🔐](https://i.ytimg.com/vi/OjrR_C_UPjc/mqdefault.jpg)

![Code a simple java shopping cart program in 6 minutes! 🛒
#java #javatutorial #javacourse
import java.util.Scanner;
public class Main {
public static void main(String[] args) {
// SHOPPING CART PROGRAM
Scanner scanner = new Scanner(System.in);
String item;
double price;
int quantity;
char currency = $;
double total;
System.out.print(What item would you like to buy?: );
item = scanner.nextLine();
System.out.print(What is the price for each?: );
price = scanner.nextDouble();
System.out.print(How many would you like?: );
quantity = scanner.nextInt();
total = price * quantity;
System.out.println(nYou have bought + quantity + + item +/s);
System.out.println(Your total is + currency + total);
scanner.close();
}
} Code a simple java shopping cart program in 6 minutes! 🛒](https://i.ytimg.com/vi/P8CVPIaRmys/mqdefault.jpg)
![Learn Java anonymous classes in 5 minutes! 🕵️♂️
#java #javatutorial #javacourse
public class Main {
public static void main(String[] args) {
// Anonymous class = A class that doesnt have a name. Cannot be reused.
// Add custom behavior without having to create a new class.
// Often used for one time uses (TimerTask, Runnable, callbacks)
Dog dog1 = new Dog();
Dog dog2 = new Dog(){
@Override
void speak(){
System.out.println(Scooby Doo says *Ruh Roh*);
}
};
dog1.speak();
dog2.speak();
}
}
public class Dog {
void speak(){
System.out.println(The dog goes *woof*);
}
} Learn Java anonymous classes in 5 minutes! 🕵️♂️](https://i.ytimg.com/vi/P_iOnmdww8E/mqdefault.jpg)

![How to WRITE FILES with Java in 8 minutes! ✍
#java #javatutorial #javacourse
import java.io.FileNotFoundException;
import java.io.FileWriter;
import java.io.IOException;
public class Main {
public static void main(String[] args) {
// How to write a file using Java (4 popular options)
// FileWriter = Good for small or medium-sized text files
// BufferedWriter = Better performance for large amounts of text
// PrintWriter = Best for structured data, like reports or logs
// FileOutputStream = Best for binary files (e.g., images, audio files)
String filePath = test.txt;
String textContent =
Roses are Red
Violets are Blue
BOOTY BOOTY BOOTY
ROCKIN EVERWHERE!
;
try(FileWriter writer = new FileWriter(filePath)){
writer.write(textContent);
System.out.println(File has been written);
}
catch(FileNotFoundException e){
System.out.println(Could not locate file location);
}
catch(IOException e){
System.out.println(Could not write file);
}
}
} How to WRITE FILES with Java in 8 minutes! ✍](https://i.ytimg.com/vi/Pg0aoSbrqOE/mqdefault.jpg)


![Java arithmetic is easy! 🧮
#java #javatutorial #javacourse
public class Main {
public static void main(String[] args) {
// Arithmetic Operators
int x = 10;
int y = 2;
int z;
z = x + y; // ADDITION
z = x - y; // SUBTRACTION
z = x * y; // MULTIPLICATION
z = x / y; // DIVISION
z = x % y; // MODULUS
System.out.println(z);
}
} Java arithmetic is easy! 🧮](https://i.ytimg.com/vi/QAD5unRlCyo/mqdefault.jpg)
