Tutorial Java part -4

/*Contoh interface*/


public class Person{
    private String name;
    private String address;
    private String city;
    private int age;
    private char gender;

    /* Konstruktor */
    /**
     * Inisialisasi objek Person dengan nilai awal string kosong dan 0 untuk age
     */
    protected Person() {
        name = "";
        address = "";
        city = "";
        age = 0;
        gender = 'F';
    }
    /**
     * Inisialisasi objek Person dengan nilai yang diberikan
     */
    protected Person(String varName, String varAddress, String varCity, int varAge, char varGender) {
        name = varName;
        address = varAddress;
        city = varCity;
        age = varAge;
        gender = varGender;
    }
   
    //setter
    /**
     * Mengubah nama
     * @param varName nilai baru untuk nama
     */
    protected void setName (String varName){
        name = varName;
    }
   
    /**
     * Mengubah Alamat
     * @param varAddress nilai baru untuk alamat
     */
    protected void setAddress (String varAddress) {
        address = varAddress;
    }

    /**
     * Mengubah Kota
     * @param varCity nilai baru untuk kota
     */
    protected void setCity (String varCity) {
        city = varCity;
    }

    /**
     * Mengubah Umur
     * @param varAge nilai baru untuk umur
     */
    protected void setAge (int varAge) {
        age = varAge;
    }
    /**
     * Mengubah jenis kelamin
     * @param varGender nilai baru untuk jenis kelamin
     */
    protected void setGender (char varGender) {
        gender = varGender;
    }
   
    //getter
    /**
     * Mengambil nilai nama
     * @return name nama
     */
    protected String getName (){
        return name;
    }
   
    /**
     * Mengambil nilai alamat
     * @return address address
     */
    protected String getAddress (){
        return address;
    }

    /**
     * Mengambil nilai kota
     * @return city city
     */
    protected String getCity (){
        return city;
    }

    /**
     * Mengambil nilai umur
     * @return name umur
     */
    protected int getAge (){
        return age;
    } 
    /**
     * Mengambil nilai jenis kelamin
     * @return gender jenis kelamin
     */
    protected int getGender (){
        return gender;
    } 

    /**
     * Mengambil nilai Person
     * @return str gabungan seluruh nilai atribut
     */
    public String toString(){
        String str =
            "name      : "+ name + "\n"+
            "address   : "+ address + "\n"+
            "city      : "+city + "\n"+
            "age      : "+age + "\n";
        return str;
    }
}



/**
 * @author Frans Tuani Ryerson SIburian
 */
public class Instructor extends Person {
    private String subject;
    private String title;
    private int salary;

     /**
     * Inisialisasi objek Instructor dengan nilai awal string kosong dan 0 untuk age dan salary
     * Konstruktor secara default memanggil super()
     */
    public Instructor() {
        subject = "";
        title = "";
        salary = 0;
    }
    /**
     * Inisialisasi objek Instructor dengan nilai yang diberikan
     * Pemanggilan konstruktor berparameter dari kelas parent harus ditulis
     * Jika tidak akan memanggil super()
     */
    public Instructor (String varName, String varAddress,
            String varCity, int varAge, char varGender,
                String varSubject, String varTitle, int varSalary) {
    super(varName, varAddress, varCity, varAge, varGender);
        subject =  varSubject;
        title = varTitle;
        salary = varSalary;
   
    }
    /**
     * Mengubah mata kuliah
     * @param varSubject nilai baru untuk mata kuliah
     */
    public void setSubject (String varSubject) {
        subject = varSubject;
    }
    /**
     * Mengubah gelar
     * @param varTitle nilai baru untuk gelar
     */
    public void setTitle (String varTitle) {
        title= varTitle;
    }
     /**
     * Mengubah gaji
     * @param varSalary nilai baru untuk gaji
     */
    public void setSalary (int varSalary) {
        salary = varSalary;
    }
    /**
     * Mengambil nilai nama
     * @return name nama
     */
    public String getSubject () {
        return subject;
    }
    /**
     * Mengambil nilai gelar
     * @return title gelar
     */
    public String getTitle () {
        return title;
    }
    /**
     * Mengambil nilai gaji
     * @return salary gaji
     */
    public int getSalary () {
        return salary;
    }
     /**
     * Mengambil nilai Instructor
     * @return str gabungan seluruh nilai atribut
     */
    public String toString(){
        String str =
            super.toString()+"\n"+
            "Subject   : "+ subject          + "\n"+
            "Title    : "+ title + "\n"+
            "Salary   : "+ salary;
        return str;
    }
   }



public class DemoInheritance
{
    public static void main(String []args)
    {
    Instructor instructor1 = new Instructor ("Umar Bakri", "Jl. Lurus No. 1", "Bandung", 30, 'L', "Strategi Algoritmik", "ST", 10000000);

        System.out.println(instructor1.getName());
        System.out.println(instructor1.getAge());
        System.out.println(instructor1.getCity());
        System.out.println(instructor1.getAge());
        System.out.println(instructor1.getSubject());
        System.out.println(instructor1.getTitle());
        System.out.println(instructor1.getSalary());
      
        System.out.println(instructor1);
        instructor1.setName("Umar Bakri Tobing");
        System.out.println(instructor1.toString());
    }
}

Tutorial Java part -3

class Point{
private int x;
private int y;

Point (int a, int b){
x = a;
y = b;}

Point(){
x = 0;
y = 0;}
public Point(Point P){
x = P.x;
y = P.y;}
public void setAbsis (int a){
x = a;}
public void setOrdinat (int b){
y = b;}
int getAbsis(){
return x;}
int getOrdinat(){
return y;}
public void tulisPoint(){
System.out.println("("+ x + "," + y +")");}
public Point plus(Point P1, Point P2){
this.x = P1.x + P2.x;
this.y = P1.y + P2.y;
return this;
}

public Point minus(Point P1, Point P2){
this.x = P1.x - P2.x;
this.y = P1.y - P2.y;
return this;
}
public Point dotProduct(Point P1, Point P2){
this.x = P1.x * P2.x;
this.y = P1.y * P2.y;
return this;
}
public Point crossProduct(Point P1, Point P2){
this.x = P1.x * P2.y;
this.y = P1.y * P2.x;
return this;
}
boolean EQ (Point P1, Point P2){
return((P1.x == P2.x) && (P1.y == P2.y));
}

boolean NEQ (Point P1, Point P2){
return((P1.x != P2.x) &&(P1.y != P2.y));}
boolean LT (Point P1, Point P2){
return((P1.x < P2.x) &&(P1.y < P2.y));}
boolean GT (Point P1, Point P2){
return((P1.x > P2.x) && (P1.y > P2.y));
}
boolean isOrigin (Point P){
return((P.x == 0) && (P.y == 0));}
boolean isOnSbX (Point P){
return(P.y == 0);}
boolean isOnSbY (Point P){
return(P.x == 0);}
int kuadran (Point P){
if (!isOrigin(P) && (!isOnSbX(P)) && (!isOnSbY(P))){
    if((P.x > 0) && (P.y > 0)){return 1;}
    else if((P.x > 0) && (P.y < 0)) {return 2;}
    else if((P.x < 0) && (P.y < 0)){return 3;}
    else {return 4;}
} else {return -999;}
}
public Point nextX (Point P){
this.x = P.x + 1;
this.y = P.y;
return this;}
Point nextY (Point P){
this.x = P.x;
this.y = P.y + 1;
return this;}
Point plusDelta (int deltaX, int DeltaY){
this.x = x + deltaX;
this.y = y + DeltaY;
return this;}

Point mirrorOf (Point P, boolean SbX, boolean SbY){
Point temp = new Point();
if(SbX && !SbY){
temp.x = -1 * P.x;
temp.y = P.y;}
else if(!SbX && SbY){
temp.x = P.x;
temp.y = -1 * P.y;}
else if(SbX && SbY){
temp.x = -1 * P.x;
temp.y = -1 * P.y;}
else{
temp.x = P.x;
temp.y = P.y;}

return temp;
}
float jarak0 (Point P){
int pangkat2x,pangkat2y,result;
pangkat2x = (P.x) * (P.x);
pangkat2y = (P.y) * (P.y);
result = pangkat2x + pangkat2y;
float a = (float)Math.sqrt(result);
return a;}

Point hslGeser (Point P, int Deltax, int deltaY){
Point temp = new Point();
temp.x = P.x + Deltax;
temp.y = P.y +deltaY;

return temp;}

void  geserKeSbX (Point P){
P.x = 0;}

void geserKeSbY (Point P){
P.y = 0;}}


/*class driver*/


class PointTestDrive{
public static void main (String[] args){


Point A = new Point();
Point B = new Point (1,3);
Point C = new Point (7,9);

A.tulisPoint();
A.plus(B,C);
A.tulisPoint();
A.minus(B,C);
A.tulisPoint();
A.dotProduct(B,C);
A.tulisPoint();
A.crossProduct(B,C);
A.tulisPoint();
System.out.println("Apakah B dan C sama" + " " + A.EQ(B,C) );
System.out.println("Apakah B dan C sama" + " " + A.NEQ(B,C) );
System.out.println("Apakah B dan C sama" + " " + A.LT(B,C) );
System.out.println("Apakah B dan C sama" + " " + A.GT(B,C) );
System.out.println("Apakah B dan C sama" + " " + A.isOrigin(B) );
System.out.println("Apakah B dan C sama" + " " + A.isOnSbX(C) );
System.out.println("Apakah B dan C sama" + " " + A.isOnSbY(B) );
System.out.println("Apakah B dan C sama" + " " + A.kuadran(C) );
A.nextX(C);
A.tulisPoint();
A.nextY(B);
A.tulisPoint();

B.plusDelta(2,8);
B.tulisPoint();
B=A.mirrorOf(B,true,false);

B.tulisPoint();
float a = A.jarak0(B);
System.out.println("ini nilai dari a" +"  " +a);
A.hslGeser(B,3,4);
A.tulisPoint();
A.geserKeSbX(B);
A.tulisPoint();
A.geserKeSbY(B);
A.tulisPoint();


}}

Tutorial Java part - 2

public class Computer{private String monitorSpec;
private String mouseSpec;
private String keyboardSpec;

public void setMonitorSpec(String monitor){
monitorSpec = monitor;
}

public void setMouseSpec(String mouse){
mouseSpec = mouse;
}

public void setKeyboardSpec(String keyboard){
keyboardSpec = keyboard;}

public String getMonitorSpec(){
return monitorSpec;
}

public String getMouseSpec(){
return mouseSpec;
}

public String getKeyboardSpec(){
return keyboardSpec;}

public String toString(){
return "merek monitor anda" + " " + getMonitorSpec() + " " + "Merek mouse anda adalah" + " " + getMouseSpec() + " " + "Merek keyboard anda adalah " + getKeyboardSpec() ;
}


public String start(){
return "Computer is turn on… " ;}

public String shutDown(){
return "Computer is turn off";}

}




/*untuk kelas drivernya*/
class ComputerTestDrive{
public static void main(String[] args){
Computer P = new Computer();
P.setMonitorSpec("Dell");
P.setMouseSpec("optikal mouse");
P.setKeyboardSpec("sony");
System.out.println("\n" + P.toString());;
System.out.println( P.start());
System.out.println( P.shutDown());
}
}

Tutorial Java part-1.2

public class BeerSong{
    public static void main (String[] args){
        int beerNum = 99;
        int temp = 0;
        String word = "bottles";
        while (beerNum > 0) {
       
       
        System.out.println(beerNum + " " + word + " of beer on the wall" + "," + beerNum + word +" of beer");
        beerNum = beerNum - 1;
        System.out.println("Take one Down and pass it arround, " + " " + beerNum + " " + word + " of beer on the wall \n");
        temp = temp + 1;
       
        if (beerNum == 1) {        System.out.println(beerNum + " " + word + " of beer on the wall" + "," + beerNum + word +" of beer");
        beerNum = beerNum - 1;
        System.out.println("Take one Down and pass it arround, " + " " + "no More " + word + " of beer on the wall \n");
        temp = temp + 1;
        if (beerNum == 0){
            System.out.println("No more" +word + "of beer on the wall, no more " +word + " of beer.");
            System.out.println("Go to the store and buy some more " + temp + " " + word + " of beer.");             }
           
            }
       
}

       
       
        }
        }
       

Tutorial Java part-1

public class AnakAyam{
    public static void main (String[] args){
        int ayam = 100;
        String akhir = "induknya";
       
        while (ayam > 0) {
       
        System.out.println("anak ayam turun " + ayam);
        ayam = ayam - 1;
if (ayam == 0){
            System.out.println("anak ayam mati satu tinggal " + akhir);
               
                break;}   
    System.out.println("Mati satu tinggal " + " " + ayam  + "\n");
       
       
           
        }
       
        }
        }