First day of Java Foundation

A Java program can be thought of as a collection of a series of objects that work together by invoking each other's methods.

Object: An object is an instance of a class that has state and behavior.

A dog is an object. Status: Color, name, variety, behavior: wagging the tail, barking, eating.

Class: Is a template that describes the behavior and state of a class of objects

Method: The method is the behavior, a class can have many methods. Logical operations, data modifications, and all actions are done in the method.

Instance variables: Each object has a unique instance variable, and the state of the object is determined by the value of these instance variables.

Print String Helloalbert

public class Helloalbert
{

/* First Java program

* It will print the string Helloalbert

*/

public static void Main (String [] args) {

System.out.println ("Helloalbert");//Print Helloalbert

}
}

Error occurred:

Solution: Javac Helloalbert.java

Java Helloalbert

First day of Java Foundation