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on October 11, 2020

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Tutorial #11: Modifier Types

Visible to the package, the default. No modifiers are needed. Visible to the class only (private). Visible to the world (public). Visible to the package and all sub-classes (protected). To use a modifier, you include its keyword in the definition of a class, method, or variable. The modifier precedes the rest of the statement. public class className { // ... } private boolean myFlag ; static final double weeks = 9.5 ; protected static final int BOXWIDTH = 42 ; public static void main ( String [] arguments ) { // body of method } Access Modifiers Visibility Public Visible to All classes. Protected Visible to classes with in the package and the sub-classes of other package. No Access Modifier (Default) Visible to the classes with the package private Visible with in the class. It is not accessible outside the class.

Tutorial #4: Loop Control

A loop statement allows us to execute a statement or group of statements multiple times and following is the general form of a loop statement in most of the programming languages − Sr.No. Loop & Description 1 while loop Repeats a statement or group of statements while a given condition is true. It tests the condition before executing the loop body. 2 for loop Execute a sequence of statements multiple times and abbreviates the code that manages the loop variable. 3 do...while loop Like a while statement, except that it tests the condition at the end of the loop body. Sr.No. Control Statement & Description 1 break statement Terminates the loop or switch statement and transfers execution to the statement immediately following the loop or switch. 2 continue statement Causes the loop to skip the remainder of its body and immediately retest its condition prior to reiterating. Syntax for(de

Tutorial # 8 : Constructors

1. Constructors Each time an object is created using new() keyword at least one constructor (it could be default constructor) is invoked to assign initial values to the data members of the same class. Type Of Constructors 1.1 No-argument constructor: A constructor that has no parameter is known as default constructor. If we don’t define a constructor in a class, then compiler creates default constructor(with no arguments) for the class. And if we write a constructor with arguments or no-arguments then the compiler does not create a default constructor. Default constructor provides the default values to the object like 0, null, etc. depending on the type. 1.2 Parameterized Constructor: A constructor that has parameters is known as parameterized constructor. If we want to initialize fields of the class with your own values, then use a parameterized constructor. Practice Code Here :- Code 1

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