使用Constructor获取带参构造时出现java.lang.NoSuchMethodException异常

使用如下代码获取Cat类的带参构造时出现了java.lang.NoSuchMethodException异常

Properties properties = new Properties();
properties.load(
    new FileInputStream("src/com/csdn/reflect/pojo/Properties.properties"));
String bean =  properties.getProperty("bean");
Class c = Class.forName(bean);
Constructor cons = c.getDeclaredConstructor(Integer.class, String.class);

Cat类：

public class Cat {
    private int id;
    private String name;

    public Cat() {
    }

    public Cat(int id, String name) {
        this.id = id;
        this.name = name;
    }

经检查后发现是参数类型指定有问题，在使用Constructor获取带参构造时，引用类型与基本类型不能混用，也就是说构造方法需要int类型，而获取时传入的是Integer类型，所以找不到构造方法，将Integer.class改为int.class编译通过

Properties properties = new Properties();
properties.load(
    new FileInputStream("src/com/csdn/reflect/pojo/Properties.properties"));
String bean =  properties.getProperty("bean");
Class c = Class.forName(bean);
Constructor cons = c.getDeclaredConstructor(int.class, String.class);