IP Lab programs

AWTControls.java

import java.awt.*;
import java.awt.event.*;
import java.applet.*;
/*
<applet code="AWTControls" width=500 height=550>
</applet>
*/
public class AWTControls extends Applet
                         implements ActionListener, ItemListener,
                         AdjustmentListener
{
   String btnMsg = "";
   String lstMsg = "";
   Button btnHard, btnSoft;
   Checkbox chkC, chkCPP, chkJava;
   CheckboxGroup cbgCompany;
   Checkbox optTcs, optInfosys, optSyntel;
   Scrollbar horzCurrent, vertExpected;
   TextField txtName, txtPasswd;
   TextArea txtaComments = new TextArea("", 5, 30);
   Choice chCity;
   List lstAccompany;

   public void init()
   {
      Label lblName = new Label("Name: ");
      Label lblPasswd = new Label("Password: ");
      Label lblField = new Label("Field of Interest: ");
      Label lblSkill = new Label("Software Skills: ");
      Label lblDreamComp = new Label("Dream Company: ");
      Label lblCurrent = new Label("Current %: ");
      Label lblExpected = new Label("Expected %: ");
      Label lblCity = new Label("Preferred City: ");
      Label lblAccompany = new Label("Accompanying Persons: ");

      txtName = new TextField(15);
      txtPasswd = new TextField(15);
      txtPasswd.setEchoChar('*');
      btnHard = new Button("Hardware");
      btnSoft = new Button("Software");
      chkC = new Checkbox("C");
      chkCPP = new Checkbox("C++");
      chkJava = new Checkbox("Java");
      cbgCompany = new CheckboxGroup();
      optTcs = new Checkbox("Tcs", cbgCompany, true);
      optInfosys = new Checkbox("Infosys", cbgCompany, false);
      optSyntel = new Checkbox("Syntel", cbgCompany, false);
      horzCurrent = new Scrollbar(Scrollbar.VERTICAL, 0, 1, 1, 101);
      vertExpected = new Scrollbar(Scrollbar.HORIZONTAL, 0, 1, 1, 101);
      chCity = new Choice();
      chCity.add("Chennai");
      chCity.add("Bangalore");
      chCity.add("Hyderabad");
      chCity.add("Trivandrum");
      lstAccompany = new List(4, true);
      lstAccompany.add("Father");
      lstAccompany.add("Mother");
      lstAccompany.add("Brother");
      lstAccompany.add("Sister");
      add(lblName);
      add(txtName);
      add(lblPasswd);
      add(txtPasswd);
      add(lblField);
      add(btnHard);
      add(btnSoft);
      add(lblSkill);
      add(chkC);
      add(chkCPP);
      add(chkJava);
      add(lblDreamComp);
      add(optTcs);
      add(optInfosys);
      add(optSyntel);
      add(lblCurrent);
      add(horzCurrent);
      add(lblExpected);
      add(vertExpected);
      add(txtaComments);
      add(lblCity);
      add(chCity);
      add(lblAccompany);
      add(lstAccompany);
      btnHard.addActionListener(this);
      btnSoft.addActionListener(this);
      chkC.addItemListener(this);
      chkCPP.addItemListener(this);
      chkJava.addItemListener(this);
      optTcs.addItemListener(this);
      optInfosys.addItemListener(this);
      optSyntel.addItemListener(this);
      horzCurrent.addAdjustmentListener(this);
      vertExpected.addAdjustmentListener(this);
      chCity.addItemListener(this);
      lstAccompany.addItemListener(this);
   }

   public void actionPerformed(ActionEvent ae)
   {
      String str = ae.getActionCommand();
      if(str.equals("Hardware"))
      {
         btnMsg = "Hardware";
      }
      else if(str.equals("Software"))
      {
         btnMsg = "Software";
      }
      repaint();
   }

   public void adjustmentValueChanged(AdjustmentEvent ae)
   {
      repaint();
   }

   public void itemStateChanged(ItemEvent ie)
   {
      repaint();
   }

   public void paint(Graphics g)
   {
      g.drawString("Detailed Profile:-", 10, 300);
      g.drawString("Field of Interest: " + btnMsg, 10, 320);
      g.drawString("Software Skill(s): ", 10, 340);
      g.drawString("C: " + chkC.getState(), 10, 360);
      g.drawString("C++: " + chkCPP.getState(), 10, 380);
      g.drawString("Java: " + chkJava.getState(), 10, 400);
      g.drawString("Dream Company: "
            + cbgCompany.getSelectedCheckbox().getLabel(), 10, 420);
      g.drawString("Current %: " + horzCurrent.getValue(), 10, 440);
      g.drawString("Expected %: " + vertExpected.getValue(), 10, 460);
      g.drawString("Name: " + txtName.getText(), 10, 480);
      g.drawString("Password" + txtPasswd.getText(), 10, 500);
      g.drawString("Preferred City: " + chCity.getSelectedItem(), 10, 520);
      int idx[];
      idx = lstAccompany.getSelectedIndexes();
      lstMsg = "Accompanying persons: ";
      for(int i = 0; i < idx.length; i++)
         lstMsg += lstAccompany.getItem(idx[i]);
      g.drawString(lstMsg, 10, 540);
   }
}

BorderLayoutDemo.java

import java.awt.*;
import java.awt.event.*;
import java.applet.*;
// <applet code="BorderLayoutDemo" width="600" height="250"></applet>
public class BorderLayoutDemo extends Applet {
   public void init() {
      setLayout(new BorderLayout());
      add(new Button("KCG College of Technology"), BorderLayout.NORTH);
      add(new Button("Karapakkam, Chennai-97."), BorderLayout.SOUTH);
      add(new Button("Mission"), BorderLayout.EAST);
      add(new Button("Vision"), BorderLayout.WEST);
      String msg = "KCG College of Technology was established\n"
           + "in the year 1998 under the Hindustan Group of institutions \n"
           + "whose members have had consumate experience in the fields of \n"
           + "education and industry";
      add(new TextArea(msg), BorderLayout.CENTER);
   }  
}

CardLayoutDemo.java

import java.awt.*;
import java.awt.event.*;
import java.applet.*;
// <applet code="CardLayoutDemo" width="300" height="100"></applet>
public class CardLayoutDemo extends Applet
                  implements ActionListener, MouseListener{
   Checkbox chkVB, chkASP, chkJ2EE, chkJ2ME;
   Panel pnlTech;
   CardLayout cardLO;
   Button btnMicrosoft, btnJava;
   public void init() {
      btnMicrosoft = new Button("Microsoft Products");
      btnJava = new Button("Java Products");
      add(btnMicrosoft);
      add(btnJava);
      cardLO = new CardLayout();
      pnlTech = new Panel();
      pnlTech.setLayout(cardLO);
      chkVB = new Checkbox("Visual Basic");
      chkASP = new Checkbox("ASP");
      chkJ2EE = new Checkbox("J2EE");
      chkJ2ME = new Checkbox("J2ME");
      Panel pnlMicrosoft = new Panel();
      pnlMicrosoft.add(chkVB);
      pnlMicrosoft.add(chkASP);
      Panel pnlJava = new Panel();
      pnlJava.add(chkJ2EE);
      pnlJava.add(chkJ2ME);
      pnlTech.add(pnlMicrosoft, "Microsoft");
      pnlTech.add(pnlJava, "Java");
      add(pnlTech);
      btnMicrosoft.addActionListener(this);
      btnJava.addActionListener(this);
      addMouseListener(this);
   }
   public void mousePressed(MouseEvent me)
   {
      cardLO.next(pnlTech);
   }
   public void mouseClicked(MouseEvent me){}
   public void mouseEntered(MouseEvent me){}
   public void mouseExited(MouseEvent me){}
   public void mouseReleased(MouseEvent me){}
   public void actionPerformed(ActionEvent ae)
   {
      if(ae.getSource() == btnMicrosoft)
      {
         cardLO.show(pnlTech, "Microsoft");
      }
      else
      {
         cardLO.show(pnlTech, "Java");
      }
   }
}

FlowLayoutDemo.java

import java.awt.*;
import java.awt.event.*;
import java.applet.*;
// <applet code="FlowLayoutDemo" width="300" height="300"> </applet>
public class FlowLayoutDemo extends Applet implements ItemListener {
   Checkbox chkWinXP, chkWinVista, chkMac, chkLinux;
   public void init() {
      setLayout(new FlowLayout(FlowLayout.LEFT));
      Label lblOS = new Label("Operating System(s) Knowledge");
      chkWinXP = new Checkbox("Windows XP");
      chkWinVista = new Checkbox("Windows Vista");
      chkMac = new Checkbox("Macintosh");
      chkLinux = new Checkbox("Linux");
      add(lblOS);
      add(chkWinXP);
      add(chkWinVista);
      add(chkMac);
      add(chkLinux);
      chkWinXP.addItemListener(this);
      chkWinVista.addItemListener(this);
      chkMac.addItemListener(this);
      chkLinux.addItemListener(this);
   }
   public void itemStateChanged(ItemEvent ie) {
      repaint();
   }
   public void paint(Graphics g) {
      g.drawString("Operating System(s) Knowledge: ", 10, 130);
      g.drawString("Windows XP: "+chkWinXP.getState(), 10, 150);
      g.drawString("Windows Vista: "+chkWinVista.getState(), 10, 170);
      g.drawString("Macintosh: "+chkMac.getState(), 10, 190);
      g.drawString("Linux: "+chkLinux.getState(), 10, 210);
   }
}

GridBagLayoutDemo.java

import java.awt.*;
import java.applet.*;
//<applet code="GridBagLayoutDemo" width="800" height="300"></applet>
public class GridBagLayoutDemo extends Applet {
   GridBagLayout gb = new GridBagLayout();
   public void init() {
      setLayout(gb);
      GridBagConstraints cons = new GridBagConstraints();
      cons.fill = GridBagConstraints.BOTH;
      Label lbl1 = new Label("First");
      cons.gridx = 0;
      cons.gridy = 0;
      cons.gridwidth = 1;
      cons.gridheight = 1;
      cons.weightx = 0;
      cons.weighty = 1;
      add(lbl1);
      Button btn1 = new Button("Button 1");
      cons.gridx = 1;
      cons.gridy = 0;
      cons.weightx = 1;
      gb.setConstraints(btn1, cons);
      add(btn1);
      Button btn2 = new Button("Button 2");
      cons.gridx = 1;
      cons.gridy = 1;
      cons.weightx = 1;
      gb.setConstraints(btn2, cons);
      add(btn2);
      Label lbl2 = new Label("Second");
      cons.gridx = 4;
      cons.gridy = 0;
      gb.setConstraints(lbl2, cons);
      add(lbl2);
      Button btn3 = new Button("Button 3");
      cons.gridx = 2;
      cons.gridy = 0;
      gb.setConstraints(btn3, cons);
      add(btn3);
      TextField tf = new TextField("TextField");
      cons.gridx = 0;
      cons.gridy = 2;
      cons.gridwidth = 4;
      cons.gridheight = 1;
      cons.fill = GridBagConstraints.HORIZONTAL;
      cons.anchor = GridBagConstraints.CENTER;
      gb.setConstraints(tf, cons);
      add(tf);
   }
}

GridLayout.java

import java.awt.*;
import java.applet.*;
// <applet code="GridLayoutDemo" width="300" height="300"></applet>
public class GridLayoutDemo extends Applet {
   public void init() {
      setLayout(new GridLayout(4,4));
      setFont(new Font("Sans Serif", Font.BOLD, 24));
      for(int i = 1; i <= 15; i++)
         add(new Button("" + i));
   }
}