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HW7
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‎HomeWork7/1.Sonuc Raporu.pdf‎

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‎HomeWork7/Q1.java‎

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class Cinema {
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private String name;
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public Cinema() {}
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public Cinema(String name) {
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this.name=name;
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System.out.print(name);
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}
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}
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public class Q1 {
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public Q1(String movie) {}
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public static void main(String[] args) {
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Cinema cnm=new Cinema("Hızlı ve Öfkeli 5");
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// System.out.print(new Q1("Another Trilogy").name);
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}
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/*
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* Constructor tanimlamasinda parametreli contructor tanimlamasi yaparken oncelikler default
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* contructor olusturulmalidi aksi halde hata verecektir.
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* Cevap C
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*
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*/
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}

‎HomeWork7/Q11.java‎

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class Computer {
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protected final int process() {return 5;}
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}
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public class Q11 extends Computer{
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public final int process() {return 3;}
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public static void main(String[] args) {
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System.out.print(new Q11().process());
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}
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/*
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* Final olan bir method override edilemez derleme hatasi alınır.
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* Cevap C
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*/
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}

‎HomeWork7/Q12.java‎

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import java.io.FileNotFoundException;
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import java.io.IOException;
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class School{
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public int getNumberOfStudentPerClassroom(String...students) throws IOException {
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return 3;
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}
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public int getNumberOfStudentPerClassroom() throws IOException {
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return 9;
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}
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}
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public class Q12 extends School {
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public int getNumberOfStudentPerClassroom() throws FileNotFoundException {
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return 2;
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}
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public static void main(String[] args) throws IOException {
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School school =new Q12();
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System.out.print(school.getNumberOfStudentPerClassroom());
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}
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/*
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* Tanimlanan sinif override edildiği icin türetilmis sınıfın degil kendi ozelligi kendi methodunun return type ni dondurur.
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* Cevap B
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* Cevap B
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*/
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}

‎HomeWork7/Q14.java‎

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interface Run{
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default void walk() {
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System.out.print("Walking and running!");
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}
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}
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interface Jog {
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default void walk() {
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System.out.print("Walking and jogging");
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}
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}
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public class Q14 implements Run,Jog{
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public void walk() {
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System.out.print("Spriting!");
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}
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public static void main(String[] args) {
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new Q14().walk();
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}
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/*
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* Cevap C
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*/
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}

‎HomeWork7/Q16.java‎

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class Ship {
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protected int weight=3;
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private int height=5;
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public int getWeight() {return weight;}
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public int getHeigh() {return height;}
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}
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public class Q16 extends Ship {
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public int weight=2;
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public int height=4;
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public void printDetails() {
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System.out.print(super.getWeight()+"-"+super.getHeigh());
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}
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public static void main(String[] args) {
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new Q16().printDetails();
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}
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/*
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*Super ifades ust class ta tanımlamıs oldugumuz methodu cagırmakta kullanıyoruz.
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*Cevap C
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*/
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}

‎HomeWork7/Q18.java‎

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abstract class Triangle {
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abstract String getDescription();
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}
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class RightTriagle extends Triangle {
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protected String getDescription() {
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return "rt";//g1
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}
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}
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public abstract class Q18 extends RightTriagle {//G2
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public String getDescription() {return "irt";}
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public static void main(String[] args) {
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final Triangle shape=new Q18();//g3
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System.out.print(shape.getDescription());
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/*
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* Cevap C
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*/
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}
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}

‎HomeWork7/Q19.java‎

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interface Horn {
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public Integer play();
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}
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abstract class Woodwind {
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public Short play() {
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return 3;
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}
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}
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public final class Q19 extends Woodwind implements Horn{
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public Number play() {
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return null;
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}
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public static void main(String[] args) {
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}
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/*
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* Cevap D
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*/
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}

‎HomeWork7/Q21.java‎

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abstract class Book {
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protected static String material ="papyrius";
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public Book() {}
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public Book(String meterial) {
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this.material=meterial;
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}
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}
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public class Q21 extends Book{
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public static String material="celluose";
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public Q21() {
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super();
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}
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public String getMaterial() {return super.material;}
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public static void main(String[] args) {
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System.out.print(new Q21().getMaterial());
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}
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/*
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* Cevap A
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*/
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}

‎HomeWork7/Q24.java‎

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interface Sphere { default String getName() { return "Unknown"; }}
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abstract class Planet { abstract String getName(); }
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public class Q24 extends Planet implements Sphere{
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public Q24() {super();}
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public String getName() { return "Mars"; }
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public static void main(final String[] probe) {
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System.out.print(((Planet)new Q24()).getName());
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}
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}
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/*
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* interfaceler implementes edilir.Abstractlar class lar ise extends edilir.
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*/

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