Previous Code Examples

Author: Programmer-RD-AI

GUI.java

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+import javax.swing.JOptionPane;
+
+public class GUI {
+    public static void main(String[] args) {
+        String name = JOptionPane.showInputDialog("Enter your name: ");
+        JOptionPane.showMessageDialog(null, "Hello " + name);
+        // System.out.println("Ur name is: "+ name);
+        int age = Integer.parseInt(JOptionPane.showInputDialog("Enter your age :"));
+        JOptionPane.showMessageDialog(null, "You are " + age + " years old");
+        double height = Double.parseDouble(JOptionPane.showInputDialog("Entre your height"));
+        JOptionPane.showMessageDialog(null, "You are " + height + " tall");
+    }
+}

If.java

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+public class If{
+    public static void main(String[] args){
+        int age = 18;
+        if (age >= 75){
+            System.out.println("OK boomer!");
+        }
+        else if (age >= 18){
+            System.out.println("You are an adult");
+        }
+        else{
+            System.out.println("You are an child");
+        }
+        return;
+    }
+}

Maths.java

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+import java.util.Scanner;
+
+public class Maths{
+    public static void main(String[] args){
+        Scanner scanner = new Scanner(System.in);
+        System.out.println("Give the a: ");
+        double a = Double.parseDouble(scanner.nextLine());
+        System.out.println("Give the b :");
+        double b = Double.parseDouble(scanner.nextLine());
+        double c = Math.sqrt(Math.pow(a, 2) + Math.pow(b, 2));
+        System.out.println("The Hypotonias is: " + c);
+        scanner.close();
+    }
+
+    public static void Intro(){
+        double x = 3.14;
+        double y = -10;
+        double z = Math.max(x, y); // Math.min(x, y), Math.abs(y), Math.sqrt(x), Math.round(x), Math.ceil(x), Math.floor(x)
+        System.out.println(z);
+        return;
+    }
+}

Operators.java

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+import java.util.Random;
+
+public class Randomm{
+    public static void main(String[] args){
+        Random random = new Random();
+
+        int x = random.nextInt(8);
+        System.out.println(x);
+
+        double y = random.nextDouble();
+        return;
+    }
+}

Randomm.java

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+public class Switch{
+    public static void main(String[] args){
+        // switch is a statement that allows a variable is tested for equality
+        String day = "Friday";
+        switch (day){
+            case "Sunday": System.out.println("It is Sunday!"); break;
+            case "Monday": System.out.println("It is Monday!"); break;
+            case "Tuesday": System.out.println("It is Tuesday!"); break;
+            case "Wednesday": System.out.println("It is Wednesday!"); break;
+            case "Thursday": System.out.println("It is Thursday!"); break;
+            default: System.out.println("That is not a day! :)");
+        }
+    }
+}