What should be there in a Java Class? Understand the Class Components
What should be there in a Java Class? Understand the Class Components
#tamilkaruvoolam #javaclass #crudeoil
Java Class Components
Class Template
Properties
Constructors
Getters and Setters
toString()
CRUD: Create / Retrieve / Update / Delete
For Create - Use Parameterized Constructor
For Update - Use Setter Methods
For Retrieve - Use Getter / toString Method
For Delete - Set object as NULL
Since, this tutorial focuses on basics, hashCode() method has not been used.
Source Code
/**
Demo Class for Employee
@author Anthoniraj Amalanathan
@since 24-Aug-2022
*/
class Employee {
private String name;
private Double salary;
public Employee() {
}
public Employee(String name, Double salary) {
this.name = name;
this.salary = salary;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public Double getSalary() {
return salary;
}
public void setSalary(Double salary) {
this.salary = salary;
}
@Override
public String toString() {
return "Employee [name=" + name + ", salary=" + salary + "]";
}
}
/**
Employee Test Class
@author Anthoniraj Amalanathan
@since 24-Aug-2022
*/
public class EmployeeTest {
public static void main(String[] args) {
Employee employee = new Employee("Kumar", 123456.50);
System.out.println(employee.toString());
System.out.println(employee.getSalary());
employee.setSalary(8576857.50);
System.out.println(employee.toString());
}
}