Simple challenge to add a fourth case to the code provided

Documentation

Within the code the Class is defined by 'public Menu', aka the constructor of the object
```
public Menu() {
```

Usage of instance variables

public final String DEFAULT = "\u001B[0m";  // Default Terminal Color
public final String[][] COLORS = { // 2D Array of ANSI Terminal Colors
  {"Default",DEFAULT},
  {"Red", "\u001B[31m"},
  {"Green", "\u001B[32m"},
  {"Yellow", "\u001B[33m"},
  {"Blue", "\u001B[34m"},
  {"Purple", "\u001B[35m"},
  {"Cyan", "\u001B[36m"},
  {"White", "\u001B[37m"},
};

Object calling method main
```
Menu.main(null);
```

Mutation instance

int random = (int) (Math.random() * COLORS.length);  // random logic

Simple code with the console menu and math classes
Mainly trigonomic functions added + random Chinese character maker

import java.lang.Math;
import java.util.*;
public class Menu {
public final String DEFAULT = "\u001B[0m";
public final String[][] COLORS = {
    {"Default",DEFAULT},
    {"Red", "\u001B[31m"},
    {"Green", "\u001B[32m"},
    {"Yellow", "\u001B[33m"},
    {"Blue", "\u001B[34m"},
    {"Purple", "\u001B[35m"},
    {"Cyan", "\u001B[36m"},
    {"White", "\u001B[37m"},
};
public final int NAME = 0;
public final int ANSI = 1;
public Menu() {
    Scanner sc = new Scanner(System.in);
    this.print();
    boolean quit = false;
    while (!quit) {
        try {
            int choice = sc.nextInt();
            System.out.print("" + choice + ": ");
            quit = this.action(choice);
        } catch (Exception e) {
            sc.nextLine();
            System.out.println(e + ": Not a choice");
        }
    }
    sc.close();
}
private void print() {
    System.out.println("-------------------------");
    System.out.println("Java Math");
    System.out.println("-------------------------");
    System.out.println("1 - Degrees to Radians Converter");
    System.out.println("2 - Radians to Tangent");
    System.out.println("3 - Radians to Cosine");
    System.out.println("4 - Radians to Sine");
    System.out.println("5 - Random output of numbers and then converted to ASCII");
    System.out.println("0 - Quit");
    System.out.println("-------------------------");
}
private boolean action(int selection) {
    boolean quit = false;
    Scanner input = new Scanner(System.in);
    switch (selection) {
        case 0:
            System.out.print("Cya");
            quit = true;
            break;
        case 1:
            System.out.println("Enter an amount of degrees: ");
            double degrees = input.nextDouble();
            System.out.println(Math.toRadians(degrees));
        case 2:
            System.out.println("Enter radians: ");
            double radians = input.nextDouble();
            System.out.print("Here is your sine value: " + Math.sin(radians));
            break;
        case 3:
            System.out.println("Enter radians: ");
            radians = input.nextDouble();
            System.out.print("Here is your tangent value: " + Math.tan(radians));
            break;
        case 4:
            System.out.println("Enter radians: ");
            radians = input.nextDouble();
            System.out.print("Here is your cosine value: " + Math.cos(radians));
            break;
        case 5: 
            int random1 = 0;
            int i = 0;
            int l = 0;
            int[] asciiList = new int[10];
            for(i = 0; i < asciiList.length; i++){
                random1 = (int)(Math.random()*100 +20000);
                asciiList[i] = random1;
            }
            System.out.println("Here is your list of random Chinese characters using Math.random: ");
            for(int element: asciiList){
                System.out.print((char)element + ", ");
            }
            break;
        default:
            System.out.print("Unexpected choice, try again.");
    }
    System.out.println(DEFAULT);
    return quit;
}
static public void main(String[] args)  {
    new Menu();
}
}
Menu.main(null);

-------------------------
Java Math
-------------------------
1 - Degrees to Radians Converter
2 - Radians to Tangent
3 - Radians to Cosine
4 - Radians to Sine
5 - Random output of numbers and then converted to ASCII
0 - Quit
-------------------------
5: Here is your list of random Chinese characters using Math.random: 
乱, 乊, 丠, 乗, 乃, 丯, 乮, 乀, 乑, 乥, 
0: Cya

2022-09-01 Java Objects Notes

Control Menu

Documentation

Menu Code