请帮忙检查一下代码中的错误：package com.enmo.mdi.distributedcomputing.distributed; import java.util.function.Function; import java.lang.reflect.*; public class Algorithm { public Algorithm() throws ClassNotFoundException, NoSuchMethodException, InvocationTargetException, IllegalAccessException { } private Double sum(Double... args) { Double num = 0.0; for (Double d: args){ num += d; } return num; } private String add(String... args) { StringBuilder str = new StringBuilder(); for (String s: args){ str.append(s); } return str.toString(); } public static Object callMethod(String name, Object... args) throws ClassNotFoundException, NoSuchMethodException, InvocationTargetException, IllegalAccessException { Class<?> clazz = Class.forName("com.enmo.mdi.distributedcomputing.distributed.Algorithm"); // 获取方法的Method对象 Method method = clazz.getDeclaredMethod(name, Double.class); method.setAccessible(true); // 调用该方法 return method.invoke(null,args); } public static void main(String[] args) throws ClassNotFoundException, NoSuchMethodException, InvocationTargetException, IllegalAccessException { // sum Double result = (Double) callMethod("sum", 1,2,3,4,5); System.out.println(result); String result1 = (String) callMethod("add", "1", "2", '3'); System.out.println(result1); } }

代码中的问题是：

1. 在调用callMethod()方法时，传入的参数类型不匹配，应该将数字1,2,3,4,5修改为1.0,2.0,3.0,4.0,5.0，即将整型转换为浮点型。对于字符串"3"，应该将其改为字符'3'。

2. 在调用callMethod()方法时，获取方法的Method对象时，应该使用Double[].class和String[].class而不是Double.class和String.class，因为参数是可变的数组。

修改后的代码如下：

package com.enmo.mdi.distributedcomputing.distributed;

import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;

public class Algorithm {

    public Algorithm() throws ClassNotFoundException, NoSuchMethodException, InvocationTargetException, IllegalAccessException {
    }

    private Double sum(Double... args) {
        Double num = 0.0;
        for (Double d: args){
            num += d;
        }
        return num;
    }

    private String add(String... args) {
        StringBuilder str = new StringBuilder();
        for (String s: args){
            str.append(s);
        }
        return str.toString();
    }

    public static Object callMethod(String name, Object... args) throws ClassNotFoundException, NoSuchMethodException, InvocationTargetException, IllegalAccessException {
        Class<?> clazz = Class.forName("com.enmo.mdi.distributedcomputing.distributed.Algorithm");
        // 获取方法的Method对象
        Method method = clazz.getDeclaredMethod(name, Double[].class);
        method.setAccessible(true);
        // 调用该方法
        return method.invoke(null, (Object) args);
    }

    public static void main(String[] args) throws ClassNotFoundException, NoSuchMethodException, InvocationTargetException, IllegalAccessException {
        // sum
        Double result = (Double) callMethod("sum", 1.0, 2.0, 3.0, 4.0, 5.0);
        System.out.println(result);

        String result1 = (String) callMethod("add", "1", "2", "3");
        System.out.println(result1);
    }
}