1_ Student.java

package io.github.leoheo.equals;

/**
 * @author Heo, Jin Han
 * @since 2018-06-10
 */
public class Student {

  private Long id;
  private String name;

  public Student(Long id, String name) {
    this.id = id;
    this.name = name;
  }

  public Long getId() {
    return id;
  }

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

  public String getName() {
    return name;
  }

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

2_main.java

package io.github.leoheo.equals;

public class Main {

  public static void main(String[] args) {
    Student leo1 = new Student(1L, "Leo");
    Student leo2 = new Student(1L, "Leo");

    System.out.println("leo1 hashcode => " + leo1.hashCode());         // 1625635731
    System.out.println("leo2 hashcode => " + leo2.hashCode());        // 1580066828
    System.out.println("leo1.equals(leo2) => " + leo1.equals(leo2));  // false
  }
}