注:本文使用New Bing(GPT4.0)演示
Java Software Developer Java软件开发者
I want you to act as a Java software developer.
I will provide you with a list of commands and you will implement them.
My first request is "I need help creating a Java application."
[外链图片转存失败,源站可能有防盗链机制,建议将图片保存下来直接上传(img-F6cmCp13-1680781803341)(https://p3-sign.toutiaoimg.com/tos-cn-i-qvj2lq49k0/3154dd478bcf4428a299fdb7589cde82~tplv-obj.image?traceid=2023040619440086B0D19834A3D07F6624&x-expires=2147483647&x-signature=PxfL24%2B3sij9u48JKD%2BXuvm%2BQbY%3D)]
准备一个不太好的Java代码示例
public int calculateUsingIfElse(int a, int b, String operator) {
int result = 0;
if (operator.equals("add")) {
result = a + b;
} else if (operator.equals("subtract")) {
result = a - b;
} else if (operator.equals("multiply")) {
result = a * b;
} else if (operator.equals("divide")) {
if (b == 0) {
throw new IllegalArgumentException("Cannot divide by zero");
}
result = a / b;
} else if (operator.equals("modulus")) {
if (b == 0) {
throw new IllegalArgumentException("Cannot divide by zero");
}
result = a % b;
} else if (operator.equals("power")) {
result = (int) Math.pow(a, b);
} else if (operator.equals("square root")) {
if (a < 0) {
throw new IllegalArgumentException("Cannot take square root of negative number");
}
result = (int) Math.sqrt(a);
} else if (operator.equals("absolute value")) {
result = Math.abs(a);
} else if (operator.equals("negate")) {
result = -a;
} else {
throw new IllegalArgumentException("Invalid operator");
}
return result;
}
[外链图片转存失败,源站可能有防盗链机制,建议将图片保存下来直接上传(img-PnBNJmed-1680781803342)(https://p3-sign.toutiaoimg.com/tos-cn-i-qvj2lq49k0/1dfaa4fe52974d9d81d06969d0e025d1~tplv-obj.image?traceid=2023040619440086B0D19834A3D07F6624&x-expires=2147483647&x-signature=U2PAN7mTLtW6l%2FaXd6ajFt%2FC4dU%3D)]
让他优化这段代码
[外链图片转存失败,源站可能有防盗链机制,建议将图片保存下来直接上传(img-XWtVv4kL-1680781803342)(https://p3-sign.toutiaoimg.com/tos-cn-i-qvj2lq49k0/4830f34da78446b7b9bbea1b773ec153~tplv-obj.image?traceid=2023040619440086B0D19834A3D07F6624&x-expires=2147483647&x-signature=CqA1g7WWlEKKE2cqrt02AxCWCPk%3D)]
// 定义一个接口,表示不同的运算策略
public interface OperationStrategy {
int apply(int a, int b);
}
// 定义一个枚举,表示不同的运算符和对应的策略
public enum Operator {
ADD((a, b) -> a + b),
SUBTRACT((a, b) -> a - b),
MULTIPLY((a, b) -> a * b),
DIVIDE((a, b) -> {
if (b == 0) {
throw new ArithmeticException("Cannot divide by zero");
}
return a / b;
}),
MODULUS((a, b) -> {
if (b == 0) {
throw new ArithmeticException("Cannot divide by zero");
}
return a % b;
}),
POWER((a, b) -> (int) Math.pow(a, b)),
SQUARE_ROOT((a, b) -> {
if (a < 0) {
throw new ArithmeticException("Cannot take square root of negative number");
}
return (int) Math.sqrt(a);
}),
ABSOLUTE_VALUE(Math::abs),
NEGATE(a -> -a);
private final OperationStrategy strategy;
Operator(OperationStrategy strategy) {
this.strategy = strategy;
}
public int apply(int a, int b) {
return strategy.apply(a, b);
}
}
// 定义一个方法,根据运算符和操作数来计算结果
public int calculateUsingStrategy(int a, int b, String operatorName) {
// 根据运算符名称找到对应的枚举常量,如果没有找到则抛出异常
Operator operator = Operator.valueOf(operatorName.toUpperCase());
if (operator == null) {
throw new IllegalArgumentException("Invalid operator");
}
// 调用枚举常量的apply方法来执行相应的策略
return operator.apply(a,b);
}
让他写个单测
第四步:我们最后让他收下尾——写个单测吧
[外链图片转存失败,源站可能有防盗链机制,建议将图片保存下来直接上传(img-Vtp1Gkkk-1680781803343)(https://p3-sign.toutiaoimg.com/tos-cn-i-qvj2lq49k0/8ccff9e1af85485ea512950bb797a43f~tplv-obj.image?traceid=2023040619440086B0D19834A3D07F6624&x-expires=2147483647&x-signature=BqCduSSI0TaxEIKZ%2FSdyw8FfW7U%3D)]
import org.junit.Test;
import static org.junit.Assert.*;
// 定义一个测试类,用@Test注解标记要执行的测试方法
public class CalculatorTest {
// 定义一个测试方法,用assertEquals方法来验证计算结果是否正确
@Test
public void testAdd() {
int result = calculateUsingStrategy(3, 5, "add");
assertEquals(8, result);
}
// 定义其他的测试方法,分别测试不同的运算符和操作数
@Test
public void testSubtract() {
int result = calculateUsingStrategy(10, 4, "subtract");
assertEquals(6, result);
}
@Test
public void testMultiply() {
int result = calculateUsingStrategy(7, 9, "multiply");
assertEquals(63, result);
}
@Test
public void testDivide() {
int result = calculateUsingStrategy(12, 3, "divide");
assertEquals(4, result);
}
// 定义一个测试方法,用assertThrows方法来验证抛出了预期的异常
@Test
public void testDivideByZero() {
assertThrows(ArithmeticException.class,
() -> calculateUsingStrategy(10,0,"divide"));
}
// 定义其他的测试方法,分别测试不同的异常情况
@Test
public void testModulusByZero() {
assertThrows(ArithmeticException.class,
() -> calculateUsingStrategy(10,0,"modulus"));
}
@Test
public void testSquareRootOfNegativeNumber() {
assertThrows(ArithmeticException.class,
() -> calculateUsingStrategy(-4,-2,"square root"));
}
// 定义一个测试方法,用assertThrows方法来验证抛出了预期的异常
@Test
public void testInvalidOperator() {
assertThrows(IllegalArgumentException.class,
() -> calculateUsingStrategy(10,-2,"foo"));
}
}
最后,数据安全是最大的问题,不要乱贴数据到 ChatGPT,尤其是涉及后端核心存储账户密码、公司核心业务数据、部门核心战略规划等。因为首先,ChatGPT会使用你的问答语料进行训练;其次,你无法预料在什么Prompt提示词下,LLM模型会讲你无意中泄露的信息回答出去。
瑕不掩瑜,ChatGPT为代表的LLM模型,在充当我们无所不知的老师、充当不知疲倦的通用Util代码编写者这些角色时能极大的提高我们的开发效率,尤其在数据分析、前端、单测、重构等领域。
就像文章第一步写的一样,ChatGPT就像是一个百变身份,你可以让他扮演任何角色,而每一个角色都能在这个角色范围内帮助我们获得更美好的生活。
更有意思的用法期待大家的发掘。