	public class User {
	String name;
	int age;
	String city;

	User(String name, int age, city) {
	this.name = name;
	this.age = age;
	this.city = city;
	}

	@Override
	public boolean equals(Object obj) {
	if (this == obj)
	return true;
	if (obj == null \|\| getClass() != obj.getClass())
	return false;
	User user = (User) obj;
	return age == user.age && name.equals(user.name) && city.equals(user.city);
	}
	}

	// Usage
	User user1 = new User("John", 30, "New York");
	User user2 = new User("John", 30, "New York");

	System.out.println(user1.equals(user2)); // true

view raw diffExamples.java hosted with ❤ by GitHub

A simple Object diff example in Java