使用反射为setter方法赋值

public class ReflectExample {
    private String name;
    private int age;

    public void setName(String name) {
        this.name = name;
    }

    public void setAge(int age) {
        this.age = age;
    }

    public static void main(String[] args) throws Exception {
        ReflectExample example = new ReflectExample();

        Class<?> clazz = example.getClass();
        Method setNameMethod = clazz.getMethod("setName", String.class);
        Method setAgeMethod = clazz.getMethod("setAge", int.class);

        setNameMethod.invoke(example, "John");
        setAgeMethod.invoke(example, 25);

        System.out.println("Name: " + example.name);
        System.out.println("Age: " + example.age);
    }
}