Java Variables and Method

Posted by  Nitin Kushwaha
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Java Variables:-

Variables are used for storing the data values.

Various types of variables are:

  •  String
  •  int
  •  float
  • char
  •  Boolean

Declaration of Variables:-

Type variable = value;


String name = “Nitin”;

System.out.println (name);
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A parameter used in Java Program:-

  • class keyword used to declare a class in java.2
  • The public keyword is used to access inside the class outside the class inside the method anywhere.
  •  static is used when we declare any method as static. There is no need to create an object to call the static method.
  •  void means that it does not contain any value.
  •  main represents the starting point of the program.
  •  String args [] is used for line command.
  • System.out.println is used to print the statement.
  •  Private Java private keyword is an access modifier. It is used to indicate that a method or variable may be accessed only in the class in which it is declared


class Student
public static void main (String args [])
System.out.println (“I Love you”);

Compile by-java

Run by- Student Java

I Love You.

Java Methods:-

  • A method is a block of code which only runs when it is called.
  • You can pass data, known as parameters, into a method.
  • Methods are also known as a function.
  • If we define the code once and use it many times.
  • The method followed by parenthesis ().
  • Java provides some pre-defined method such as System.out.println (). But we can also create own method.


public class Student
static void Mymethod()
System.out.println(“I am fine”);
public static void main(String args[])
I am fine.