Class in Java: Learn More about Java Classes with Sample Java Codes

public static dataType methodName()//this how to make a static method
{
}

className.staticMethodName(); //this is how to access a static method

//java class



package samlejava;

class javaClass {
     public String Schedule(String room, String section)//method1
    {
        return room +" "+" "+ section + " "+" ";
    }

    public String Schedule(String subject,String day, String time)//overloaded methodName
    {
        return subject +" "+" "+day+ " "+" "+ time+" "+" ";
    }

     public static String Schedule(String teacher)//overloaded methodName with a type static
    {
        return teacher;
    }

}

//main class



package samlejava;

import java.util.Scanner;

public class Main {


    public static void main(String[] args) {
        Scanner readInput = new Scanner(System.in);

        System.out.print("Enter your Name: ");
        String name= readInput.nextLine();

        System.out.print("Add a Subject: ");
        String subject= readInput.nextLine();

        System.out.print("Add a Section: ");
        String section= readInput.nextLine();

        System.out.print("Add a Room for the Section: ");
        String room= readInput.nextLine();


        System.out.print("Add Day for the Subject: ");
        String day= readInput.nextLine();

        System.out.print("Add time for Subject: ");
        String time= readInput.nextLine();

        System.out.print("Add teacher for the Subject: ");
        String teacher= readInput.nextLine();

        javaClass iAccess = new javaClass();//access javaClass class,instamtiate object

        System.out.println();
        System.out.println(name + "Here is a new Subject Schedule for You!");
        System.out.println();
        System.out.println("Room" + " " + " " + "Section" + " " +" " +
                "Subject" + " " +" " + "Day" + " "+" " +
                 "TIme" + " " + " " + "Teacher" );
        System.out.println();
        System.out.print (iAccess.Schedule(room, section));//access method1
        System.out.print (iAccess.Schedule(subject, day, time));//access method2
        System.out.print (javaClass.Schedule(teacher));//this is how static works

    }

}

//java class



package constructor;


public class constructor {

    String fName;
    String lName;
    String gender;
    int age;

    public constructor() //empty constructor initialized variables
    {
        fName= " ";
        lName= " ";
        gender = " ";
        age= 0;
    }
    public constructor(String firstName, String lastName)//constructor1 return fName and lName
    {                                                  
        fName = firstName;
        lName = lastName;

        System.out.print(firstName+ " " + lastName);
    }
    public constructor(String Sex, int Age)//overloading the constructor Name return gender & age
    {                                       
        gender = Sex;
        age = Age;
        System.out.print( Sex+ " : " + Age);
    }
     public constructor(String firstName, String lastName,String Sex, int Age)//overloading 2 return all
    {                                                                   
        fName = firstName;
        lName = lastName;
        gender = Sex;
        age = Age;

        System.out.print(firstName+ " " + lastName + ": " + Sex+ " : " + Age +" yrs. old");
    }

    public constructor(constructor copyCons)// copy the last constructor
    {
       fName = copyCons.fName;
       lName = copyCons.lName;
       gender = copyCons.gender;
       age = copyCons.age;

       System.out.print(fName+ " " + lName+ ": " + gender+ " : " + age +" yrs. old");
    }
}

//main class



package constructor;

import java.util.Scanner; //import scanner for input Stream

public class Main {

  
    public static void main(String[] args) {

        Scanner input = new Scanner(System.in);//instantiate object to input

        System.out.print("Enter first name: ");
        String fName = input.nextLine(); // read the string input

        System.out.print("Enter last name: ");
        String lName = input.nextLine(); // read the string input

        System.out.print("Enter gender: ");
        String gender = input.nextLine(); // read the string input

        System.out.print("Enter Age: ");
        
         
        int age = input.nextInt(); // read the integer input
        System.out.println("RESULT FROM 3RD CONSTRUCTOR");
        constructor access1 = new constructor(fName, lName, gender, age); //accesslast constructor;
        System.out.println();
        System.out.println("RESULT FROM COPY CONSTRUCTOR");
        constructor access2 = new constructor(access1); // access copy constructor
       


    }

}