JAVA Programming, Include 100 Questions & Answers. For Beginners, Learn Coding Fast! Java Crash Course, Quick Start Guide, Tutorial Book, Program Samples, In Easy Steps! An Ultimate Beginner's Guide! by Yao Ray

Author:Yao, Ray [Yao, Ray]
Language: eng
Format: azw3
Publisher: Java programming language, Java code program development, Java taught yourself guide, Java for kids
Published: 2019-04-19T16:00:00+00:00

Hands-On Project: Inheritance

Inheritance Example

Start up Eclipse > Select “myPackage” > new > class > name > InheritanceDemo > Finish.

Write following codes in Eclipse.

package myPackage;

class code1{ // parent class

int x, y;

code1(int a, int b){ // constructor

x = a; y = b;

}

}

class code2 extends code1{ // sub class

code2 (int a, int b){ // constructor

super (a,b); // call the constructor in the parent class

}

}

public class InheritanceDemo {

public static void main(String[] args) { // main function

int result;

code2 number = new code2(100, 200); /* create an object “number”, and call code2 constructor automatically */

result = number.x + number.y;

System.out.println("Sum = " + result);

}

}

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