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Inheritance in Java programming with example | Zhullyblog

INHERITANCE INHERITANCE as said earlier in the Introduction to Java programming is a process in which a class acquires or inherits the properties and functionalities of another class. SYNTAX class Super { //Properties } class Sub extends Super { } From the syntax, there is a line where we have : sub extends super . This means that the sub class inherits the super class. Inheritance happens in our real world and there is no difference with programming. Human being inherit some of parent properties/qualities so, it works like that in Java Inheritance. The class that inherits the properties and function is called a child class or sub class. And the class whose properties are inherited are parent class or super class . The inheritance mechanism allows the child class to reuse the properties of the parent class. So the question is,how are the properties of a class Inherited by another? And that question bring us to ...... extend keyword. EXTEND KEYWORD The extend is the keyw

If, if..else , if..else..if statement in Java

If , If...else , nested if statement in Java The If statement generally is used to test a condition. It is used to check whether a condition is true or false before executing a statement. For example, you might want to check if x is equal to y , if yes then add x and y or otherwise. There are other examples like - You might want to allow user to only register their profile only if they are of certain age. And the example goes on and on. The if statement isn't just about testing alone, I would say it is needed in every program. The truth is, you can't just let users enter anything they like, there has to be rules and regulations, for example, if you have a form that allows user to enter their username and phones number, the colon for phone must accept only numbers and if the user does not follow up with the rules, an error must be displayed. This is where if statement is in use. Let's see how it works in Java Syntax for If statement if ( expression ) { //Statement ;

Continue statement in Java

CONTINUE STATEMENT IN JAVA The continue statement is used basically within a loop control to jump immediately to the end of statement or loop. It is used in both for loop and while and do...while loop etc. GENERAL SYNTAX The syntax is one of the simplest. It's just continue followed by semicolon. continue; Examples Continue keyword in For loop public class sample{ public static void main(String args[]){ for (int x=0; x<=10; x++) { if (x==8) { continue; } System.out.print(x +" "); } } } Result Continue keyword in While loop public class sample{ public static void main(String args[]){ int x=0; while (x <=10) { if (x==1) { x++; continue; } System.out.print(x +" "); x++; } } } Result Java Basics Introduction to Java programming Java Syntax How to declare a variable in Java Java data types Java Operators

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