Java中Boolean引发缺陷的解决

Boolean b = newBoolean(boolean value);
Boolean b = newBoolean(String s);

// Java program to demonstrate parseBoolean() method
public class Test
{
    public static void main(String[] args)
    {
        // parsing different Strings
        boolean b1 = Boolean.parseBoolean("True");
        boolean b2 = Boolean.parseBoolean("TruE");
        boolean b3 = Boolean.parseBoolean("False");
        boolean b4 = Boolean.parseBoolean("FALSE");
        boolean b5 = Boolean.parseBoolean("qualityassurance");
        System.out.println(b1);
        System.out.println(b2);
        System.out.println(b3);
        System.out.println(b4);
        System.out.println(b5);
    }
}
​
true
true
false
false
false

import lombok.Data;
/**
 * @author qualityassurance
 * @version Payment.java, v 0.1 2023年03月19日 15:52
 */
@Data
public class Payment {
    /**
     * 支付金额
     */
    private int amount;
    /**
     * 是否可以用折扣
     */
    private Boolean isDiscount;
}

public class DiscountFunction {
​
    public int  calculateAmount(Payment payment){
        /**
         * 若isDiscount=true,则价格砍半
         */
        if (payment.getIsDiscount().booleanValue()){
            return payment.getAmount()/2;
        }
        return payment.getAmount();
    }
}

public class DiscountFunctionTest {
​
    /**
     * 若isDiscount=true,则价格砍半
     */
    @Test
    public void isDiscountTest(){
        Payment payment = new Payment();
        payment.setAmount(1000);
        payment.setIsDiscount(true);
        DiscountFunction discountFunction = new DiscountFunction();
        int amount = discountFunction.calculateAmount(payment);
        Assert.assertEquals(payment.getAmount()/2, amount);
    }
​
    /**
     * 若isDiscount=false,则价格不变
     */
    @Test
    public void isNotDiscountTest(){
        Payment payment = new Payment();
        payment.setAmount(1000);
        DiscountFunction discountFunction = new DiscountFunction();
        int amount = discountFunction.calculateAmount(payment);
        Assert.assertEquals(payment.getAmount(), amount);
    }
}