46 lines
1.3 KiB
Java
46 lines
1.3 KiB
Java
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package Test
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abstract class TaxCalculator {
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protected double income
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public TaxCalculator(double income {
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this.income = income
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}
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public abstract double calculateTax()
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public double afterTaxIncome() {
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return income - calculateTax()
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}
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class FlatTaxCalculator extends TaxCalculator {
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private static final double RATE = 0.15
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public FlatTaxCalculator(double income) super(income)
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public double calculateTax() {
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return income * RATE
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}
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public class TaxApp {
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static class BracketTaxCalculator extends TaxCalculator {
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public BracketTaxCalculator(double income)
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super(income)
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public double calculateTax() {
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if (income <= 10000) return income * 0.10
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else if (income <= 50000) return (10000 * 0.10) + ((income - 10000) * 0.20)
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else return (10000 * 0.10) + (40000 * 0.20) + ((income - 50000) * 0.30)
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}
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}
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public static void main(String[] args) {
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double income = 60000
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TaxCalculator flat = new FlatTaxCalculator(income)
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double flatTax = flat.calculateTax()
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double flatAfterTax = flat.afterTaxIncome()
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TaxCalculator bracket = new BracketTaxCalculator(income)
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double bracketTax = bracket.calculateTax()
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double bracketAfterTax = bracket.afterTaxIncome()
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}
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}
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