_review about for loops +Ex: Pay attention to condition inside loop about the array length. _Get some test on eclipse import java.util.Arrays;

public class Aha { private String title; private int ISBN; private Integer[] values;

public Aha(String title, int iSBN, Integer[] values) {
    this.title = title;
    ISBN = iSBN;
    this.values = values;
}

/**
 * @return the title
 */
public String getTitle() {
    return title;
}

/**
 * @param title the title to set
 */
public void setTitle(String title) {
    this.title = title;
}

/**
 * @return the iSBN
 */
public int getISBN() {
    return ISBN;
}

/**
 * @param iSBN the iSBN to set
 */
public void setISBN(int iSBN) {
    ISBN = iSBN;
}

/**
 * @return the values
 */
public Integer[] getValues() {
    return values;
}

/**
 * @param values the values to set
 */
public void setValues(Integer[] values) {
    this.values = values;
}



@Override
public String toString() {
    return "Aha [title=" + title + ", ISBN=" + ISBN + ", values=" + Arrays.toString(values) + "]";
}

*Sharing data between classes Another way to share data is inheritance. _New class keyword: Extends _New method/ data visibility keyword: protected +This data item/ method is visible both inside the class and to classes that extend this class. +Also visible to other classes in the same package _UML Terminology +Subclass: Child class Get direct access to all of the public and protected +Superclass: Parent class, Base class => Product Practise Modeling relationships Ex: Shape: superclass Ex2: Name: super class of first name, last name, middle name **Inherited can be bad if done incorrectly _Inherited is widely used in Java *From one class Public Aha( String title, ISBN, value) { This.title = title; SetISBN(ISBN); This.value = value } Public Aha() { Title = “what” ISBN =9; This.value = new Integer[999]; }

*From another class Public class AAAAha extends Aha{ Public AAAAja() { //super(); } Public static void main(String[] args) { Var x = new AAAAha(); } }