java使用反射判断两个对象是否改变,判断两个对象的字段值是否一致

package org.springblade.common.utils;

import java.lang.reflect.Field;

class Student {
    private String name;
    private int age;
    private String major;

    public Student(String name, int age, String major) {
        this.name = name;
        this.age = age;
        this.major = major;
    }

    public static boolean isFieldValuesChanged(Object obj1, Object obj2) {
        if (obj1 == null || obj2 == null || obj1.getClass() != obj2.getClass()) {
            return true;
        }
        Class<?> clazz = obj1.getClass();
        Field[] fields = clazz.getDeclaredFields();
        for (Field field : fields) {
//            if(!field.getName().equals("updateTime")){
				field.setAccessible(true);
				try {
					Object value1 = field.get(obj1);
					Object value2 = field.get(obj2);
					if (value1 == null) {
						if (value2 != null) {
							return true;
						}
					} else if (!value1.equals(value2)) {
						return true;
					}
				} catch (IllegalAccessException e) {
					e.printStackTrace();
				}
		//	}
        }
        return false;
    }
}

public class ReflectionComparisonExample {
    public static void main(String[] args) {
        Student student1 = new Student("Alice", 20, "Computer Science");
        Student student2 = new Student("Alice", 20, "Computer Science");
        Student student3 = new Student("Alice", 20, "Mathematics");

        System.out.println(Student.isFieldValuesChanged(student1, student2)); // false
        System.out.println(Student.isFieldValuesChanged(student1, student3)); // true
    }
}

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