How to Create Custom Class in Java?

// Java Program to Creating our Own Custom Class // Importing input output classes import java.io.*; // Class 1 // Helper class class Employee {  // Member variables of this class  // first attribute  int id;  // second attribute  int salary;  // third attribute  String name;  // Member function of this class  // Method 1  public void printDetails()  {  // Print and display commands  System.out.println("My id is " + id);  System.out.println("This is my name " + name);  }  // Method 2  public int getSalary()  {  // Simply returning the salary  return salary;  } } // Class 2 // Main class class Custom {  // Main driver method  public static void main(String[] args)  {  // Display message only  System.out.println("This is the custom class");  // Creating object of custom class in the main()  // method Instantiating a new Employee object  Employee harry = new Employee();  // Again creating object of custom class and  // instantiating a new Employee object  Employee robin = new Employee();  // Initializing values for first object created  // above  harry.id = 23;  harry.salary = 100000;  harry.name = "Ritu bhatiya";  // Initializing values for second object created  // above  robin.id = 25;  robin.salary = 150000;  robin.name = "Amit thripathi";  // Printing object attributes by  // calling the method as defined in our class  harry.printDetails();  robin.printDetails();  // Calling the method again of our class and  // storing it in a variable  int salary = robin.getSalary();  // Print and display the above salary  System.out.println("Salary of robin : " + salary  + "$");  System.out.println("ID : " + harry.id);  } }