Thread: Loops and number programs ZI

public static void main(String[] args) {
 
		int x = 10;
		String num ="";
 
		while(x!=0) {
			num=Integer.toString(x%2)+num;
			x = x/2;
		}
		System.out.print(num);		
	}	
}

public class FromBin{
 
	public static int power(int number, int exp){
 
		int k=1;
		for(int i=1; i<=exp;i++) {
			k*=number;	
		}
		return(k);
	}
 
	public static void main(String[] args) {
 
		int result= 0;
		String number= "0100";
 
		for(int i=0; i<number.length(); i++) {
 
			if(number.charAt(i)=='1') {
				result+=power(2,number.length()-1-i);	
			}
		}
 
		System.out.print(result);
	}
}

import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileReader;
import java.io.InputStreamReader;
 
public class Sum{
 
	public static void main(String[] args) throws Exception {
 
		File file = new File("c:\\user.txt");
		BufferedReader reader = null;
		try {
			reader = new BufferedReader(new FileReader(file));
			String text = null;
 
			int sum = 0;
			while ((text = reader.readLine()) != null) {
				text=text.toLowerCase();
				for(int i=0; i<text.length(); i++) {
					if(text.charAt(i)=='a'|| text.charAt(i)=='e'|| text.charAt(i)=='i'|| text.charAt(i)=='o'||text.charAt(i)=='u') 
					{
						sum++;
					}
				}	
			}
			System.out.println(sum);
 
		}catch (Exception e) {
		}
	}
}

public class BubbleSort {
 
	public static int[] bubblesort(int [] array) {
 
		for(int i = 0; i < array.length - 1; i++) {
 
			for (int j = 0; j <array.length - i - 1; j++) {
 
				if(array[j]<array[j+1]) {
					int tmp = array[j];
					array[j] = array[j+1];
					array[j+1] = tmp;
				}
			}
		}
		return array;
	}
 
	public static void main( String[] args) {
 
		int[] list = {8,4,7,0,1,5,2,3,9,6};
		bubblesort(list);
		for(int k = 0; k < list.length; k++) {
			System.out.print(list[k]);
		}
		System.out.println();
 
		for(int k = list.length-1; k >= 0; k--) {
			System.out.print(list[k]);
		}
	}
}
 
 
//=IF(MOD(SUM(A1:B1);2)=0;"False";"True")

public class EuclidAlg {
 
	public static int NSD (int a, int b) {
 
		if(a>b) {
			return NSD(a-b,b);
		}
		if(a<b) {
			return NSD(a,b-a);
		}
		if(a==b) {
			return a = b;
		}
		return 0;
	}
 
	public static void main(String[] args) {
		System.out.print(NSD(15, 25));
	}
}

		btnSave.addMouseListener(new MouseAdapter() {
			@Override
			public void mouseClicked(MouseEvent arg0) {
				String text = textArea.getText();	
				JFileChooser chooser = new JFileChooser();
				chooser.setCurrentDirectory(new File("/Users"));
			    int retrival = chooser.showSaveDialog(null);
			    if (retrival == JFileChooser.APPROVE_OPTION) {
			    	try {
						BufferedWriter out = new BufferedWriter(new FileWriter(
								chooser.getSelectedFile()+".txt"
								));
						out.write(text);
						out.close();
						} catch(IOException e) {
						e.printStackTrace();
						}
			    }
			}
		});
 
 
		textArea.setFont(textArea.getFont().deriveFont(Font.ITALIC, textArea.getFont().getSize()));
		textArea.setFont(textArea.getFont().deriveFont(Font.BOLD, textArea.getFont().getSize()));

public void mouseClicked(MouseEvent e) {
 
	String sentence = textArea.getText();
	String find = textVyhl.getText();
 
	for(String st : sentence.split(" ")){
		if(st.indexOf(find)!=-1){
			System.out.println(st);
			textArea2.setText(textArea2.getText()+st+'\n');
		}
	}
}

String word = "Hello";
String code = "";
 
for(int i = 0; i < word.length(); i++) {
	char cipher = (char) (word.charAt(i)+2);
	code = code+Character.toString(cipher);
}
 
System.out.println(code);

	 public void paint(Graphics g) {
 
		for(int j = 0; j<4; j++)
		{
 
			 for(int i = 0; i<8; i++)
			    {
			    	if(i%2==0) {
			    		g.setColor(Color.red);
			    	}else {
			    		  g.setColor(Color.black);
					}			
			    	g.fillOval(i*50+10,50+j*100,50,50);
			    }
 
			    for(int i = 0; i<8; i++)
			    {
			    	if(i%2==0) {
			    		g.setColor(Color.black);
			    	}else {
			    		  g.setColor(Color.red);
					}			
			    	g.fillOval(i*50+10,100+j*100,50,50);
			    }
		}
 
 
	}
 
 
 
		JFrame colorFrame = new JFrame();
 
		JPanel colorPane = new JPanel()
				{
					@Override
					public void paintComponent(Graphics g)
					{
 
						for(int j = 0; j<2; j++)
						{
 
							 for(int i = 0; i<4; i++)
							    {
							    	if(i%2==0) {
							    		g.setColor(Color.red);
							    	}else {
							    		  g.setColor(Color.black);
									}			
							    	g.fillRect(i*50+10,0+j*100,50,50);
							    }
 
							    for(int i = 0; i<4; i++)
							    {
							    	if(i%2==0) {
							    		g.setColor(Color.black);
							    	}else {
							    		  g.setColor(Color.red);
									}			
							    	g.fillRect(i*50+10,50+j*100,50,50);
							    }
						}
 
					}
				};
 
	public ChessTour() {
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		setBounds(100, 100, 440, 480);
		contentPane = new JPanel();
		contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
		contentPane.setLayout(new BorderLayout(0, 0));
		setContentPane(contentPane);
		colorFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		colorFrame.add(colorPane);
 
		//colorFrame.getContentPane().add(emptyLabel, BorderLayout.CENTER);
		colorFrame.setSize(230, 250);
		colorFrame.setLocation(540, 160);
		colorFrame.setVisible(true);
 
	}	
 
 
}

		JPanel panel = new JPanel(){
 
			public void paint(Graphics g) {
 
				int rad = Integer.parseInt(textA1.getText());
				int stlp = Integer.parseInt(textA2.getText());
 
					for(int j = 0; j<rad; j++)
					{
						 for(int i = 0; i<stlp; i++)
						    {
						    	g.setColor(Color.red);
						    	g.fillOval(i*40+10,j*40,40,40);
						    }
					}
			}
 
		};	
 
 
 
		JButton btnNa = new JButton("N\u00E1sob");
		btnNa.addMouseListener(new MouseAdapter() {
			@Override
			public void mouseClicked(MouseEvent arg0) {
 
 
				int a = Integer.parseInt(textA1.getText());
				int b = Integer.parseInt(textA2.getText());	
				int c = a*b;
 
				textA3.setText(Integer.toString(c));
				panel.repaint();
				repaint();
 
			}
		});
 
 
		JTextArea textAreaRoz = new JTextArea();	
		JTextArea textAreaVys = new JTextArea();
 
		JButton btnRozlo = new JButton("Rozlo\u017E");
		btnRozlo.addMouseListener(new MouseAdapter() {
			@Override
			public void mouseClicked(MouseEvent arg0) {
 
				textAreaVys.setText("");
				int i = Integer.parseInt(textAreaRoz.getText());
				String vysledok = "";
				for(int j = 1; j<=i; j++) {
					if(i%j==0) {
						vysledok = Integer.toString(j)+"x"+Integer.toString(i/j)+"\n";
						textAreaVys.append(vysledok);
						System.out.print(vysledok);
 
					}
				}
 
			}
		});

public class ListColor extends JFrame {
	Color[] farby =  {Color.RED, Color.YELLOW, Color.BLUE, Color.GRAY, Color.GREEN, Color.ORANGE, Color.BLACK};
 
	private JPanel contentPane;
	private JPanel panel;
	private JPanel panel_1;
	private JPanel panel_2;
	private JPanel panel_3;
	private JPanel panel_4;
	private JPanel panel_5;
	private JPanel panel_6;
	private JButton btnNakresli;
 
	public static void main(String[] args) {
		EventQueue.invokeLater(new Runnable() {
			public void run() {
				try {
					ListColor frame = new ListColor();
					frame.setVisible(true);
				} catch (Exception e) {
					e.printStackTrace();
				}
			}
		});
	}
 
	public ListColor() {
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		setBounds(100, 100, 450, 300);
		contentPane = new JPanel();
		contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
		setContentPane(contentPane);
		contentPane.setLayout(null);
 
		JButton btnNakresli = new JButton("Nakresli");
		btnNakresli.setBounds(298, 129, 89, 23);
		contentPane.add(btnNakresli);
 
		JButton btnPosun = new JButton("Posun");
		btnPosun.setBounds(298, 163, 89, 23);
		contentPane.add(btnPosun);
 
		JPanel panel = new JPanel();
		panel.setBounds(37, 48, 50, 50);
		contentPane.add(panel);
 
		JPanel panel_1 = new JPanel();
		panel_1.setBounds(87, 48, 50, 50);
		contentPane.add(panel_1);
 
		JPanel panel_2 = new JPanel();
		panel_2.setBounds(137, 48, 50, 50);
		contentPane.add(panel_2);
 
		JPanel panel_3 = new JPanel();
		panel_3.setBounds(187, 48, 50, 50);
		contentPane.add(panel_3);
 
		JPanel panel_4 = new JPanel();
		panel_4.setBounds(237, 48, 50, 50);
		contentPane.add(panel_4);
 
		JPanel panel_5 = new JPanel();
		panel_5.setBounds(287, 48, 50, 50);
		contentPane.add(panel_5);
 
		JPanel panel_6 = new JPanel();
		panel_6.setBounds(337, 48, 50, 50);
		contentPane.add(panel_6);
 
		btnNakresli.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent arg0) {
					panel.setBackground(farby[0]);
					panel_1.setBackground(farby[1]);
					panel_2.setBackground(farby[2]);
					panel_3.setBackground(farby[3]);
					panel_4.setBackground(farby[4]);
					panel_5.setBackground(farby[5]);
					panel_6.setBackground(farby[6]);
			}
		});
		btnPosun.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				Color temp = farby[6];
				for (int i = farby.length-1; i>0; i--) {
					farby[i] = farby [i-1];
				}
				farby[0] = temp;
			}
		});
	}
}

		String thisLine = null;
		String text = "";
 
	        try{
	    		BufferedReader br = new BufferedReader( new FileReader( new File(("c:\\users"))));
	    		while ((thisLine = br.readLine()) != null) {
	    			  for(int j = thisLine.length()-1; j>=0; j--) {
	    				  if(thisLine.charAt(j)=='.') {
		    				text = text + "\n";
	    				  }
	    				  text = text + thisLine.charAt(j);
	    				  }
	    		}
	    		br.close();
	    		} catch(Exception e) {
	    		e.printStackTrace();
	    		}
 
	        System.out.print(text);
 
	        JFileChooser chooser = new JFileChooser();
			chooser.setCurrentDirectory(new File("/Users"));
		    int retrival = chooser.showSaveDialog(null);
		    if (retrival == JFileChooser.APPROVE_OPTION) {
		    	try {
					BufferedWriter out = new BufferedWriter(new FileWriter(
							chooser.getSelectedFile()+".txt"));
					out.write(text);
					out.close();
					} catch(IOException e) {
					e.printStackTrace();
					}
		    }

String thisLine = null;
		String name= "";
 
        try{
    		BufferedReader br = new BufferedReader( new FileReader( new File(("c:\\users"))));
    		while ((thisLine = br.readLine()) != null) {
    			  for(int j = thisLine.length()-1; j>=0; j--) {
    				  name = thisLine.charAt(j) + name;
    				  }
    		}
    		br.close();
    		} catch(Exception e) {
    		e.printStackTrace();
    		}
 
		for(int y = 0; y<name.length(); y++) {
 
			for(int x = 0; x<name.length()-y; x++) {
 
				System.out.print(name.charAt(x));
 
			}
			System.out.println();
		}

public class Parentheses extends JFrame {
 
	private JPanel contentPane;
	private JTextField textField;
	private JButton btnOtestuj;
	private JLabel lblNewLabel;
 
	public static void main(String[] args) {
		EventQueue.invokeLater(new Runnable() {
			public void run() {
				try {
					Parentheses frame = new Parentheses();
					frame.setVisible(true);
				} catch (Exception e) {
					e.printStackTrace();
				}
			}
		});
	}
 
	public Parentheses() {
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		setBounds(100, 100, 450, 300);
		contentPane = new JPanel();
		contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
		setContentPane(contentPane);
		contentPane.setLayout(null);
 
		textField = new JTextField();
		textField.setBounds(39, 37, 279, 35);
		contentPane.add(textField);
		textField.setColumns(10);
 
		JButton btnOtestuj = new JButton("Otestuj");
		btnOtestuj.setBounds(335, 43, 89, 23);
		contentPane.add(btnOtestuj);
 
		JLabel lblNewLabel = new JLabel("");
		lblNewLabel.setBounds(359, 95, 46, 40);
		contentPane.add(lblNewLabel);
		btnOtestuj.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent arg0) {
				String text = textField.getText();
				int pocetO = 0;
				int pocetZ = 0;
				for (int i = 0; i < text.length(); i++) {
					if (text.charAt(i) == '(') {
						pocetO++;
					}
					if (text.charAt(i) == ')') {
						pocetZ++;
					}
					if (pocetO == pocetZ) {
						lblNewLabel.setText("Ok");
					}
					if (pocetO < pocetZ) {
						lblNewLabel.setText("Chyba");
						return;
					}
				}
				if (pocetO > pocetZ) {
					lblNewLabel.setText("Chyba");
				}
			};
		});
	}
}
 
//=IF(MOD(SUM(A1:B1);2)=0;"Mistake";"Correct")

String strLine;
	JTextArea textArea = new JTextArea();
	JTextArea textArea2 = new JTextArea();
	String subor = "";
 
	public void readData() {
 
		try {
		BufferedReader br = new BufferedReader((new FileReader(new File("c:\\users"))));
			while ((strLine = br.readLine()) != null)   {
				subor=subor+strLine+"\n";
				textArea.setText(textArea.getText()+strLine + "\n");
			}br.close();
		} catch (IOException e) {
			e.printStackTrace();
		}
	};
 
	public void Prepocitat() {
 
		String [] rozdelenySubor = subor.split("\n");	
 
		for(int i=0; i<rozdelenySubor.length; i++) {
			String [] riadok = rozdelenySubor[i].split(" ");
			System.out.print(rozdelenySubor[i]+"\n");
			int body = Integer.parseInt(riadok[2]);
			System.out.print(body+"\n");
 
			int znamka = 0;
 
			if(body>=9) {
				znamka = 1;
 
			}else if(body>=7) {
				znamka = 2;
 
			}else if(body>=5) {
				znamka = 3;
 
			}else if(body>=3) {
				znamka = 4;
 
			}else if(body>=0) {
				znamka = 5;
 
			};
 
			textArea2.setText(textArea2.getText()+riadok[0]+" "+riadok[1]+" "+znamka + "\n");
 
		}
	};
 
	public StupnicaStudentov() {
 
 
		readData();

public class Sum{
 
	public static void main(String[] args) throws Exception {
 
		File file = new File("c:\\user.txt");
		BufferedReader reader = null;
		try {
			reader = new BufferedReader(new FileReader(file));
			String text = null;
 
			int sum = 0;
			while ((text = reader.readLine()) != null) {
				text=text.toLowerCase();
				for(int i=0; i<text.length(); i++) {
					if(text.charAt(i)=='a'|| text.charAt(i)=='e'|| text.charAt(i)=='i'|| text.charAt(i)=='o'||text.charAt(i)=='u') 
					{
						sum++;
					}
				}	
			}
			System.out.println(sum);
 
		}catch (Exception e) {
		}
	}
}

	JTextArea textAreaDatum = new JTextArea();
	JTextArea textAreaCas = new JTextArea();
	JLabel lblAktualny = new JLabel("Aktu\u00E1lny \u010Das a d\u00E1tum");
	JLabel lblRokov = new JLabel("Rokov:");
	JLabel lblMesiacov = new JLabel("Mesiacov:");
	JLabel lblDn = new JLabel("Dn\u00ED:");
	JLabel lblHodn = new JLabel("Hod\u00EDn:");
	JLabel lblMint = new JLabel("Min\u00FAt:");
	JLabel lblSeknd = new JLabel("Sek\u00FAnd:");	
	JTextArea textAreaRok = new JTextArea();	
	JTextArea textAreaMes = new JTextArea();
	JTextArea textAreaDni = new JTextArea();
	JTextArea textAreaHod = new JTextArea();
	JTextArea textAreaMin = new JTextArea();
	JTextArea textAreaSek = new JTextArea();
	JLabel label = new JLabel("");
 
	DateFormat dateFormat = new SimpleDateFormat("yyyy.MM.dd HH:mm:ss");
	Date date = new Date();
	DateFormat casFormat = new SimpleDateFormat("HH:mm:ss");
	Date cas = new Date();
	DateFormat datumFormat = new SimpleDateFormat("yyyy.MM.dd");
	Date datum = new Date();
 
	String datumNovy = "";
	String denNew = "";
	String test = "";
 
	String sekundy = "";
	Double rok = 365.25;
 
	public void Start() throws ParseException {
 
		datumNovy = textAreaDatum.getText()+" "+textAreaCas.getText();
 
		String denFormat = new SimpleDateFormat("EE").format(dateFormat.parse(datumNovy));
		textAreaDni.setText(denFormat);
 
 
		Calendar calendar = Calendar.getInstance();
		calendar.setTime(dateFormat.parse(datumNovy));
		int dayOfYear = calendar.get(Calendar.DAY_OF_YEAR);
 
		Date dateNovy = dateFormat.parse(datumNovy);
 
		System.out.println(dateNovy);
		System.out.println(datumNovy);
		System.out.println("DEN:"+denFormat);
 
		System.out.println("DEN V ROKU:" + dayOfYear);
 
		long epoch = date.getTime();
		long epochnovy = dateNovy.getTime();
 
		long vysledok = epoch - epochnovy;
 
		long sek = vysledok /1000;
		long min = sek /60;
		long hod = min / 60;
		long dni = min / 1440 ;
		long mes = dni / 30 ;
		long rok = min / 1440 / 365 ;
 
		/*
		LocalDate localDate = date.toInstant().atZone(ZoneId.systemDefault()).toLocalDate();
		int month = localDate.getMonthValue();
		int year = localDate.getYear();
		*/
		//long longlong = dateNovy.getTimeInMillis();
 
		System.out.println("Sekundy="+sek);
		System.out.println("Minuty="+min);
		System.out.println("Hodiny="+hod);
		System.out.println("Dni="+dni);
		System.out.println("Roky="+rok);
 
		textAreaMes.setText(Long.toString(mes));
		textAreaRok.setText(Long.toString(rok));
		textAreaDni.setText(Long.toString(dni));
		textAreaHod.setText(Long.toString(hod));
		textAreaMin.setText(Long.toString(min));
		textAreaSek.setText(Long.toString(sek));
 
	}
 
	public DatumNar() {
 
 
		label.setText(dateFormat.format(date));
 
 
		textAreaDatum.setText(datumFormat.format(datum));
		textAreaCas.setText(casFormat.format(cas));
 
		JButton btnVypotaj = new JButton("Vypo\u010D\u00EDtaj");
		btnVypotaj.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent arg0) {
 
				try {
					Start();
				} catch (ParseException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}
			}
		});

import java.awt.BorderLayout;
import java.awt.EventQueue;
 
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.border.EmptyBorder;
 
public class Pyramida extends JFrame {
 
	private JPanel contentPane;
 
	public static void main(String[] args) {
		EventQueue.invokeLater(new Runnable() {
			public void run() {
				try {
					Pyramida frame = new Pyramida();
					frame.setVisible(true);
				} catch (Exception e) {
					e.printStackTrace();
				}
			}
		});
	}
 
	public Pyramida() {
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		setBounds(100, 100, 500, 500);
		contentPane = new JPanel();
		contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
		contentPane.setLayout(new BorderLayout(0, 0));
		setContentPane(contentPane);
		contentPane.add(new DrawCircle());
	}
 
}
 
 
...
 
import java.awt.event.MouseListener;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
 
public class DrawCircle extends JFrame implements MouseListener { 
 
  private static int x=40;   // leftmost pixel in circle has this x-coordinate
  private static int y=40;   // topmost  pixel in circle has this y-coordinate
  private int c = 1;
  private Color p;
  private Color n;
  public DrawCircle(Color parna, Color neparna) {
    p = parna;
    n = neparna;
	setSize(800,800);
    setLocation(100,100);
    addMouseListener(this); 
    setVisible(true);
  }
 
  // paint is called automatically when program begins, when window is
  //   refreshed and  when repaint() is invoked 
  public void paint(Graphics g) {
    g.fillOval(x,y,64,64);
    for (int i = 0; i<8; i++) {
    	if (i%2 == 0) {
    	    g.setColor(n);
    	    for (int l = 0; l<8; l++) {;
    		if (c%2 == 0) {
    			g.fillOval(x, y, 64, 64);
        		g.setColor(n);
    		}else {
    			g.fillOval(x, y, 64, 64);
        		g.setColor(p);
    		}
    		c++;
    		x+= 64;
    	}
    	x = 40;
		y+= 64;
    	}else {
    	    g.setColor(p);
    	for (int l = 0; l<8; l++) {;
    		if (c%2 == 0) {
    			g.fillOval(x, y, 64, 64);
        		g.setColor(p);
    		}else {
    			g.fillOval(x, y, 64, 64);
        		g.setColor(n);
    		}
    		c++;
    		x+= 64;
    	}
    	x = 40;
		y+= 64;
    }
    }
    y=40;
}
 
  // The next 4 methods must be defined, but you won't use them.
  public void mouseReleased(MouseEvent e ) { }
  public void mouseEntered(MouseEvent e)   { }
  public void mouseExited(MouseEvent e)    { }
  public void mousePressed(MouseEvent e)   { }
  public void mouseClicked(MouseEvent e)   { }
 
 
 
}