为什么调用不了私有print方法异常说权限不够
public class Employee {
	private String name;
	public String sex;
	protected int age;
	double salary;
	private Employee() {
		super();
	}
	public Employee(String name, String sex, int age, double salary) {
		super();
		this.name = name;
		this.sex = sex;
		this.age = age;
		this.salary = salary;
	}
	public void show(String name) {
		System.out.println("员工信息如下：姓名="+name+",性别="+sex+",年龄="+age+",薪资"+salary);
	}
	private String print() {
		return "How are you!";
	}
}



import java.lang.reflect.Constructor;
import java.lang.reflect.Field;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.lang.reflect.Modifier;

public class Test {

	public static void main(String[] args) throws InstantiationException, IllegalAccessException, IllegalArgumentException, InvocationTargetException, NoSuchMethodException, SecurityException {
		//获取Class对象
		Class emp=Employee.class;
		
		
		//修饰符
		int i=emp.getModifiers();
		String str=Modifier.toString(i);
		System.out.println("访问修饰符"+str);
		//包名
		Package package1=emp.getPackage();
		System.out.println("包名"+package1);
		//全限定名
		String str2=emp.getName();
		System.out.println("全限定名"+str2);
		//类名
		String str3=emp.getSimpleName();
		System.out.println("类名"+str3);
		
		
		//public修饰的构造方法数量 
		Constructor[] constructors=emp.getConstructors();
		int num=0;
		for (Constructor constructor : constructors) {
			num++;
		}
		System.out.println("public修饰的构造方法数量"+num);
		//获取有参构造方法的参数个数。
		Constructor[] declaredConstructors=emp.getDeclaredConstructors();
		for (Constructor constructor : declaredConstructors) {
			int num2=constructor.getParameterCount();
			if(num2>0) {
				System.out.println("有参构造方法的参数个数"+num2);
			}		
		}	
		
		
		//获取类中所有public成员变量的个数
		Field[] field=emp.getFields();
		int num3=0;
		for (Field field2 : field) {
			num3++;
		}
		System.out.println("获取类中所有public成员变量的个数"+num3);
		//本类中所有成员变量的个数
		Field[] declaredfields=emp.getDeclaredFields();
		int num4=0;
		for (Field field2 : declaredfields) {	
			num4++;
		}
		System.out.println("本类中所有成员变量的个数"+num4);
		
		
		
		//根据方法名获取print方法，并通过相关方法调用显示方法的返回值
		
		Method[] method=emp.getDeclaredMethods();
		for (Method method2 : method) {
			System.out.println(method2);
		}
	
		//创建对象		
		Object obj= emp.getDeclaredConstructor().newInstance();
		Method print=emp.getDeclaredMethod("print");
		print.setAccessible(true);
		Object invoke = print.invoke(obj);
		System.out.println(invoke);
		
	}

}
erp如何与内容系统对接(JAVA)

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