Java Records - A Plain Data Carriers!
Java Records
- A record is a `restricted form of a class`
- It's ideal for `plain data carriers`
- classes that contain data `not meant to be altered`
- fundamental methods such as `constructors and accessors`.
- `Plain Old Java Class` (POJO) and `Data Transfer Object` (DTO)
- Since `JDK14`
Employee Class
```java
public class Employee {
private String name;
private double salary;
public Employee(String name, double salary){
this.name = name;
this.salary = salary;
}
public String getName(){
return name;
}
public double getSalary(){
return salary;
}
public String toString(){
return "[Name: "+name +", Salary: "+salary+"]";
}
}
```
Staff Class
```java
record Staff(String name, double salary){}
```
Test Class
```java
public class EmployeeTest {
public static void main(String[] args) {
Employee emp =new Employee("Kumar", 37161.50);
System.out.println(emp.toString());
Staff staff = new Staff("Kamal", 65755.50);
System.out.println(staff.name());
}
}
```