belajar menggunakan operator aritmatika dengan java

import java.util.Scanner;

public class nilai

{

public static void main(String args[]);

{

Scanner masuk=new Scanner(System.in);

float tgs,uts,uas,nilai;

String nama,nomor;

System.out.print("masukkan nama anda:");

nama=masuk.nextLine();

System.out.print("masukankan nomor anda:");

nomor=masuk.nextLine();

System.out.print("masukkan nilai tugas:");

tgs=masuk.nextFloat();

System.out.print("masukkan nilai uts:");

uts=masuk.nextFloat();

System.out.print("masukkan nilai uas:");

uas=masuk.nextFloat();

tgs=0.2f*tgs;

uts=0.3f*uts;

uas=0.5f*uas;

nilai=tgs+uts+uas;

System.out.println("Hasil perhitungan Nilai");

System.out.println("==================");

System.out.println("Nama:"+nama);

System.out.println("Nomor:"+nomor);

 System.out.println("Nilai Tugas:"+tgs);

System.out.println("Nilai Uts:"+uts);

System.out.println("Nilai Uas:"+uas);

System.out.println("TOTAL Nilai:"+nilai);

}

}

Algoritma pemprograman menggunakan java. L.N.Hananingrum 

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mobil ala java

mungkin bagi orang awam java sangat sulit. disini kalian biasa membuat gambar-gambar dua dimensi dari java menjadi bergerak ikuti caranya:

import java.awt.*;

import java.awt.event.*;

import java.awt.geom.Ellipse2D;

import java.awt.geom.Line2D;

import java.awt.geom.Rectangle2D;

import java.util.Timer;

import java.util.TimerTask;

import javax.swing.*;

public class Gabungan3 extends JFrame{

    private JPanel buttonPanel;

    private Mobil gambar;

    private JButton btGerak;

    public JTextField masukan;

    private int faktor, a;

    public int sensorDepan, sensorBelakang;

    Timer timer = new Timer();

public Gabungan3() {

    super("Mobil Genius");

    gambar= new Mobil();

    gambar.setBackground(Color.white);

            masukan  = new JTextField();

            masukan.setText("1");

     btGerak = new JButton( "Start" );

     btGerak.addActionListener(new ActionListener() {

     public void actionPerformed( ActionEvent event ) {

     gerakkan(true);

     }

     });

        buttonPanel = new JPanel();

        buttonPanel.setLayout( new GridLayout( 1, 3 ) );

        buttonPanel.add(masukan);

        buttonPanel.add(btGerak);

        Container container = getContentPane();

        container.add( gambar, BorderLayout.CENTER );

        container.add( buttonPanel, BorderLayout.SOUTH);

        setSize(800, 230);

        setVisible( true );

     }

     public static void main( String args[] ){

     Gabungan3 application = new Gabungan3();

                  application.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE );

}

class putar extends TimerTask{

private boolean mundur;

public void run()

{

try{                      faktor=Integer.parseInt(masukan.getText());

if(mundur){

a -= faktor;

gambar.draw(Mobil.GERAK, a);

if(sensorBelakang <= 40)

     mundur = false;

}else{

a += faktor;

           gambar.draw(Mobil.GERAK, a);

           if(sensorDepan >= 739)

           mundur = true;

               }

           }catch(Exception e){}

      }

      }

public void gerakkan(boolean laju){

if(laju){

     masukan.setText("1");

timer.schedule(new putar(), 10, 1);

}

else if (laju == false)

masukan.setText("0");

}

       class Mobil extends JPanel {

           public final static int GERAK = 1;

           private int shape;

           int transformasi = 0;

Color warna;

@Override

public void paintComponent( Graphics g ) {

super.paintComponent( g );

Graphics2D g2=(Graphics2D) g ;

            int mX1 = 90, mY1 = 60;

            int mX2 = 180, mY2 = 60;

            int mX3 = 230, mY3 = 90;

            int mX4 = 260, mY4 = 100;

            int mX5 = 270, mY5 = 110;

            int mX6 = 270, mY6 = 130;

            int mX7 = 230, mY7 = 130;

            int mX8 = 210, mY8 = 110;

            int mX9 = 190, mY9 = 130;

            int mX10 = 110, mY10 = 130;

            int mX11 = 90, mY11 = 110;

            int mX12 = 70, mY12 = 130;

            int mX13 = 40, mY13 = 130;

            int mX14 = 40, mY14 = 120;

            int mX15 = 50, mY15 = 120;

            int mX16 = 50, mY16 = 100;

            int mX17 = 60, mY17 = 100;

            int kX1 = 76, kY1 = 90;

            int kX2 = 90, kY2 = 90;

            int kX3 = 90, kY3 = 70;

            int kX4 = 100, kY4 = 90;

            int kX5 = 140, kY5 = 90;

            int kX6 = 140, kY6 = 70;

            int kX7 = 100, kY7 = 70;

            int kX8 = 150, kY8 = 90;

            int kX9 = 210, kY9 = 90;

            int kX10 = 180, kY10 = 70;

            int kX11 = 150, kY11 = 70;

            int rX1 = 190, rY1 = 110;

            int rX2 = 70, rY2 = 110;

            int vX1 = 200, vY1 = 120;

            int vX2 = 80, vY2 = 120;

Rectangle2D tembok1 = new Rectangle2D.Float(740, 50, 20, 100);

            Rectangle2D tembok2 = new Rectangle2D.Float(20, 50, 20, 100);

            warna = new Color(234, 107, 72);

            g2.setPaint(warna);

            g2.fill(tembok1);

            g2.fill(tembok2);

            g2.draw(tembok1);

            g2.draw(tembok2);

            Line2D jalan = new Line2D.Float(40, 150, 740, 150);

            warna = new Color(0, 0, 0);

            g2.setColor(warna);

            g2.setPaint(warna);

            g2.fill(jalan);

            g2.setPaint(warna);

            g2.draw(jalan);

            warna = new Color(80, 164, 245);

            g2.setColor(warna);

            Polygon mobil = new Polygon();

              mobil.addPoint(mX1 + transformasi, mY1);

              mobil.addPoint(mX2 + transformasi, mY2);

              mobil.addPoint(mX3 + transformasi, mY3);

              mobil.addPoint(mX4 + transformasi, mY4);

              mobil.addPoint(mX5 + transformasi, mY5);

              mobil.addPoint(mX6 + transformasi, mY6);

              mobil.addPoint(mX7 + transformasi, mY7);

              mobil.addPoint(mX8 + transformasi, mY8);

              mobil.addPoint(mX9 + transformasi, mY9);

              mobil.addPoint(mX10 + transformasi, mY10);

              mobil.addPoint(mX11 + transformasi, mY11);

              mobil.addPoint(mX12 + transformasi, mY12);

              mobil.addPoint(mX13 + transformasi, mY13);

              mobil.addPoint(mX14 + transformasi, mY14);

              mobil.addPoint(mX15 + transformasi, mY15);

              mobil.addPoint(mX16 + transformasi, mY16);

              mobil.addPoint(mX17 + transformasi, mY17);

            g2.fill(mobil);

            g2.drawPolygon(mobil);

            warna = new Color(0, 0, 0);

            g2.setColor(warna);

            Polygon kaca1 = new Polygon();

              kaca1.addPoint(kX1 + transformasi, kY1);

              kaca1.addPoint(kX2 + transformasi, kY2);

              kaca1.addPoint(kX3 + transformasi, kY3);

            g2.fill(kaca1);

            g2.drawPolygon(kaca1);

            Polygon kaca2 = new Polygon();

              kaca2.addPoint(kX4 + transformasi, kY4);

              kaca2.addPoint(kX5 + transformasi, kY5);

              kaca2.addPoint(kX6 + transformasi, kY6);

              kaca2.addPoint(kX7 + transformasi, kY7);

            g2.fill(kaca2);

            g2.drawPolygon(kaca2);

            Polygon kaca3 = new Polygon();

              kaca3.addPoint(kX8 + transformasi, kY8);

              kaca3.addPoint(kX9 + transformasi, kY9);

              kaca3.addPoint(kX10 + transformasi, kY10);

              kaca3.addPoint(kX11 + transformasi, kY11);

            g2.fill(kaca3);

            g2.drawPolygon(kaca3);

Ellipse2D roda1 = new Ellipse2D.Float(rX1 + transformasi,rY1,40,40);

Ellipse2D roda2 = new Ellipse2D.Float(rX2 + transformasi,rY2,40,40);

            g2.fill(roda1);

            g2.fill(roda2);

            g2.draw(roda1);

            g2.draw(roda2);

Ellipse2D velg1 = new Ellipse2D.Float(vX1 + transformasi,vY1,20,20);

Ellipse2D velg2 = new Ellipse2D.Float(vX2 + transformasi,vY2,20,20);

            warna = new Color(255,255,255);

            g2.setPaint(warna);

            g2.fill(velg1);

            g2.fill(velg2);

            g2.draw(velg1);

            g2.draw(velg2);

  g2.draw(velg2);

g2.drawString("Mobilku", 130 + transformasi, 110);

sensorDepan = mX5 + transformasi;

sensorBelakang = mX14 + transformasi;

if ( shape == GERAK){

transformasi += transformasi;

     }

}

public void draw( int shapeToDraw, int fak)

{

shape = shapeToDraw;

transformasi = fak;

repaint();

     }

  }

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