Create class with attribute
public class PersegiPanjang {
int panjang = 10;
int lebar = 5;
}Add method to the class that has been created
...
public int volume(int p, int l) {
return p*l;
}
...Add constructor to the class that has been created
public PersegiPanjang(int panjang, int lebar) {
this.panjang = panjang;
this.lebar = lebar;
}Do encapsulation to the PersegiPanjang class with changing attribute to private and add setter and getter for attribute
...
private int panjang;
private int lebar;
...
public int getPanjang() {
return panjang;
}
public void setPanjang(int panjang) {
this.panjang = panjang;
}
public int getLebar() {
return lebar;
}
public void setLebar(int lebar) {
this.lebar = lebar;
}
...Do Inheritance with create new PersegiPanjangRun class
public class PersegiPanjangRun extends PersegiPanjang{
public PersegiPanjangRun(int panjang, int lebar) {
super(panjang, lebar);
}
public int getValuePanjang(){
return this.getPanjang();
}
public void setValuePanjang(int panjang){
this.setPanjang(panjang);
}
public static void main(String[] args) {
PersegiPanjangRun main = new PersegiPanjangRun(5,5);
main.setPanjang(10);
System.out.println(main.getValuePanjang());
}
}Do Implements with creating creature interface and creating cat class
Creature Interface
public interface Creature {
public void speak();
public void walk();
public void eat();
public void sleep();
}Cat Class
public class Cat implements Creature{
@Override
public void speak() {
System.out.println("Miaaww");
}
@Override
public void walk() {
System.out.println("Walk with catwalk style");
}
@Override
public void eat() {
System.out.println("Eat meat, fish, and little bit grass for cleaning fur in the stomach");
}
@Override
public void sleep() {
System.out.println("Do a lot of sleep at day and little bit at night");
}
}
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