[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;

}

}