定义两个重载的方法，分别求圆和长方形的面积。 效果图： //climg.mukewang.com/583fea8d0001febf05000108.jpg 任务： 1、定义两个求面积的重载方法，圆周率可以用Math.PI表示 2、在主方法中调用方法并将结果输出。 注意：当圆的半径为4.5，长方形长和宽分别为8和5时，可得到如效果图所示的结果

以下是针对您的问题的代码：

public class AreaCalculator {
    public static void main(String[] args) {
        double circleArea = getArea(4.5);
        double rectangleArea = getArea(8, 5);
        System.out.println("圆的面积是：" + circleArea);
        System.out.println("长方形的面积是：" + rectangleArea);
    }

    public static double getArea(double radius) {
        return Math.PI * radius * radius;
    }

    public static double getArea(double length, double width) {
        return length * width;
    }
}

输出：

圆的面积是：63.61725123519331
长方形的面积是：40.0

希望这个回答能够帮到您！

相关问题

<image mode="widthFix" src="https://wimg.588ku.com/gif/20/10/21/91fea40cf6f139fd6ff3a78675546c45.gif"></image> 图片展示的方式我想换成自适应

好的，你可以将 `mode="widthFix"` 改成 `mode="aspectFit"`，这样图片就会自适应展示了。代码如下：

<image mode="aspectFit" src="https://wimg.588ku.com/gif/20/10/21/91fea40cf6f139fd6ff3a78675546c45.gif"></image>

树莓派4b使用pip安装paddle时出现错误：python -m pip install paddle -i https://pypi.tuna.tsinghua.edu.cn/simple --no-cache-dirDefaulting to user installation because normal site-packages is not writeable Looking in indexes: https://pypi.tuna.tsinghua.edu.cn/simple, https://www.piwheels.org/simple Collecting paddle Downloading https://pypi.tuna.tsinghua.edu.cn/packages/55/cf/e4b6b9a54d2f072e4491e34317bf5f5fea260da8a3072e641832dc9ce770/paddle-1.0.2.tar.gz (579 kB) ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 579.0/579.0 kB 1.8 MB/s eta 0:00:00 Installing build dependencies ... done Getting requirements to build wheel ... error error: subprocess-exited-with-error × Getting requirements to build wheel did not run successfully. │ exit code: 1 ╰─> [19 lines of output] Traceback (most recent call last): File "/usr/local/lib/python3.8/site-packages/pip/_vendor/pyproject_hooks/_in_process/_in_process.py", line 353, in <module> main() File "/usr/local/lib/python3.8/site-packages/pip/_vendor/pyproject_hooks/_in_process/_in_process.py", line 335, in main json_out['return_val'] = hook(**hook_input['kwargs']) File "/usr/local/lib/python3.8/site-packages/pip/_vendor/pyproject_hooks/_in_process/_in_process.py", line 118, in get_requires_for_build_wheel return hook(config_settings) File "/tmp/pip-build-env-_506dkis/overlay/lib/python3.8/site-packages/setuptools/build_meta.py", line 341, in get_requires_for_build_wheel return self._get_build_requires(config_settings, requirements=['wheel']) File "/tmp/pip-build-env-_506dkis/overlay/lib/python3.8/site-packages/setuptools/build_meta.py", line 323, in _get_build_requires self.run_setup() File "/tmp/pip-build-env-_506dkis/overlay/lib/python3.8/site-packages/setuptools/build_meta.py", line 487, in run_setup super(_BuildMetaLegacyBackend, File "/tmp/pip-build-env-_506dkis/overlay/lib/python3.8/site-packages/setuptools/build_meta.py", line 338, in run_setup exec(code, locals()) File "<string>", line 3, in <module> File "/tmp/pip-install-514wqan3/paddle_7c2bfe27eaa349ecb89b325af305b6fa/paddle/__init__.py", line 5, in <module> import common, dual, tight, data, prox ModuleNotFoundError: No module named 'common' [end of output] note: This error originates from a subprocess, and is likely not a problem with pip. error: subprocess-exited-with-error × Getting requirements to build wheel did not run successfully. │ exit code: 1 ╰─> See above for output. note: This error originates from a subprocess, and is likely not a problem with pip.

这个错误可能是由于缺少一些依赖项或者环境配置不正确导致的。你可以尝试以下几种方法来解决这个问题：

1. 确保你的pip版本是最新的，可以运行 `python -m pip install --upgrade pip` 来更新到最新版本。
2. 确保你的系统中已经安装了必要的依赖项，如gcc、g++、make等。
3. 可以尝试使用conda来安装paddle，具体操作可以参考Paddle官方文档：https://www.paddlepaddle.org.cn/install/quick
4. 如果以上方法都不能解决问题，可以尝试从源码编译PaddlePaddle，具体操作可以参考PaddlePaddle官方文档：https://www.paddlepaddle.org.cn/documentation/docs/zh/install/compile/linux-compile.html