Challenge: Income Tax Calculation

Tâche

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Implement a program that calculates taxes based on income brackets, applying different tax rates depending on the income level.

If the income is over 100,000, the tax rate is 25%.
If the income is between 50,000 and 100,000, the tax rate is 15%.
If the income is below 50,000, the tax rate is 5%.

Set the appropriate values in if and else if for the income conditions.
Multiply the amount by the appropriate percentage in each case to get the correct tax amount.
In the calculateTaxes method, iterate through the income array using a for-each loop.
Add the tax for each income to the result list by using the taxFunction functional interface passed as a parameter.
Store the result of the calculateTaxes method in the taxes variable.

Solution

solution

package com.example;

import java.util.List;

import java.util.Arrays;

import java.util.ArrayList;

import java.util.function.Function;

public class Main {

public static void main(String[] args) {

// List of incomes

List<Double> incomes = Arrays.asList(120000.0, 80000.0, 40000.0, 150000.0);

// Function to calculate tax

Function<Double, Double> calculateTax = income -> {

if (income > 100000) {

return income * 0.25; // 25% tax

} else if (income >= 50000) {

return income * 0.15; // 15% tax

} else {

return income * 0.05; // 5% tax

}

};

// Apply the function to all incomes

List<Double> taxes = calculateTaxes(incomes, calculateTax);

// Print the results

taxes.forEach(tax -> System.out.println("Tax: " + tax));

}

public static List<Double> calculateTaxes(List<Double> incomes, Function<Double, Double> taxFunction) {

List<Double> result = new ArrayList<>();

for (Double income : incomes) {

result.add(taxFunction.apply(income)); // Apply the tax calculation function

}

return result;

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Section 1. Chapitre 7

package com.example;

import java.util.List;

import java.util.Arrays;

import java.util.ArrayList;

import java.util.function.Function;

public class Main {

public static void main(String[] args) {

// List of incomes

List<Double> incomes = Arrays.asList(120000.0, 80000.0, 40000.0, 150000.0);

// Function to calculate tax

Function<Double, Double> calculateTax = income -> {

if (income > ___) {

return income * ___; // 25% tax

} else if (income >= ___) {

return income * ___; // 15% tax

} else {

return income * ___; // 5% tax

}

};

// Apply the function to all incomes

List<Double> taxes = ___;

// Print the results

taxes.forEach(tax -> System.out.println("Tax: " + tax));

}

public static List<Double> calculateTaxes(List<Double> incomes, Function<Double, Double> taxFunction) {

List<Double> result = new ArrayList<>();

for (Double income : ___) {

result.___(taxFunction.___(___)); // Apply the tax calculation function

}

return result;