Click here to watch in Youtube :
https://www.youtube.com/watch?v=RTC-WPdjweE&list=UUhwKlOVR041tngjerWxVccw
Employee.java
HashSetExample.java
https://www.youtube.com/watch?v=RTC-WPdjweE&list=UUhwKlOVR041tngjerWxVccw
Employee.java
public class Employee { private String name; private int age; private int salary; public Employee( String name, int age, int salary ) { super(); this.name = name; this.age = age; this.salary = salary; } 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; } public int getSalary() { return salary; } public void setSalary( int salary ) { this.salary = salary; } @Override public String toString() { return "Employee [name=" + name + ", age=" + age + ", salary=" + salary + "]"; } }
import java.util.HashSet; /* * Storing user-defined class objects. */ public class HashSetExample { public static void main(String[] args) { HashSet<Employee> hashSet = new HashSet<Employee>(); Employee john = new Employee("John", 32, 40000); Employee david = new Employee("David", 42, 80000); Employee peter = new Employee("Peter", 52, 150000); hashSet.add(john); hashSet.add(david); hashSet.add(peter); System.out.println("hashSet : " + hashSet + "\n"); /* * Using for each loop getting each employee object from the hashSet */ for (Employee employee : hashSet) { System.out.println("-------------------------------------"); System.out.println(employee.toString()); System.out.println("Name : " + employee.getName()); System.out.println("Age : " + employee.getAge()); System.out.println("Salary : " + employee.getSalary()); } } }
hashSet : [Employee [name=Peter, age=52, salary=150000], Employee [name=John, age=32, salary=40000], Employee [name=David, age=42, salary=80000]] ------------------------------------- Employee [name=Peter, age=52, salary=150000] Name : Peter Age : 52 Salary : 150000 ------------------------------------- Employee [name=John, age=32, salary=40000] Name : John Age : 32 Salary : 40000 ------------------------------------- Employee [name=David, age=42, salary=80000] Name : David Age : 42 Salary : 80000
https://sites.google.com/site/javaee4321/java-collections/HashSetDemoUserDefined.zip?attredirects=0&d=1
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