实现Student类的equals重载函数

[java]代码库

//测试类
public class StudentDemo {

	public static void main(String[] args) {
		Student s1 = new Student("000","张三",18);
		Student s2 = new Student("000","张三",18);//随便改
		boolean flag = s1.equals(s2);
		System.out.println(flag);
	}
}

//实现类Student
public class Student {

	//私有成员
	private String id;
	private String name;
	private int age;

	//带参构造函数
	public Student(String id, String name, int age) {
		super();
		this.id = id;
		this.name = name;
		this.age = age;
	}

	//无参构造函数
	public Student() {
		super();
		// TODO Auto-generated constructor stub
	}

	public String getId() {
		return id;
	}

	public void setId(String id) {
		this.id = id;
	}

	public String getName() {
		return name;
	}

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

	public int getAge() {
		return age;
	}

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

	@Override
	public String toString() {
		return "Student [id=" + id + ", name=" + name + ", age=" + age + "]";
	}

	public boolean equals(Object obj) {
		if (this == obj) 
			return true;
		if (obj == null) 
			return false; 
		if (getClass() != obj.getClass())  
			return false; 
		Student s = (Student) obj;
		if (id != s.id)  
			return false; 
		if (age != s.age)  
			return false; 
		if (name == null) {
			if (s.name != null) 
				return false; 
			} else if (!name.equals(s.name)) 
				return false; 
		return true;
	}

}