Notes

LAB1😁😁😁😁😁😁😁😁😁😁😁😁😁😁
import java.io.*;
class gps
{
public static void main (String args[])throws IOException
{
BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
System.out.println("enter the string:");
String S=br.readLine();
System.out.println("enter the index 1:");
int i1=Integer.parseInt(br.readLine());
System.out.println("enter the index 2:");
int i2=Integer.parseInt(br.readLine());
String str=S.substring(i1,i2);
System.out.println("result is ="+str);
}
}
LAB2😁😁😁😁😁😁😁😁😁😁😁😁😁😁😁
import java.io.*;
class student
{
int rno;
String name="honey";
void getno(int n)
{
rno=n;
}
void Putrno()
{
System.out.println("Rno:"+rno);
System.out.println("Name:"+name);
}
}
class test extends student
{
int mark1,mark2;
void getmarks(int m1,int m2)
{
mark1=m1;
mark2=m2;
}
public void Putmarks()
{
System.out.println("Mark1:"+mark1);
System.out.println("Mark2:"+mark2);
}
}
interface Sports
{
int Sportsmark=75;
void Putmarks();
}
class result extends test implements Sports
{
int total;
public void putmarks()
{
System.out.println("Sportmark="+Sportsmark);
}
void display()
{
total=mark1+mark2+Sportsmark;
Putrno();
Putmarks();
Putmarks();
System.out.println("Total marks:"+total);
}
}
class lab2
{
public static void main (String args[])
{
result Stud = new result();
Stud.getno(1000);
Stud.getmarks(75,100);
Stud.display();
}
}
LAB3😁😁😁😆😆😆😅😅😁😁😄
import java.io.*;
import java.lang.*;
class lab3
{
public static void main(String args[])throws IOException
{
int payamt;
DataInputStream in=new DataInputStream(System.in);
System.out.println("nnpay out of bound exception");
System.out.println("* * *");
System.out.println("n enter a basic pay amount");
payamt =Integer.parseInt(in.readLine());
try
{
if(payamt>1000)
throw new payoutofBoundException("Basic pay is out of bound");
else
System.out.println("n given basic pay is:"+payamt);
}
catch(Exception e)
{
System.out.println("caught:"+e);
}
}
}
class payoutofBoundException extends IOException
{
//String s;
payoutofBoundException(String message)
{
// s=message;
System.out.println(message);
}
}
LAB4😂😂😆😆😅😅😁😁😁😁😁😅😆😆
import java.io.*;
class Table5 extends Thread
{
public void run()
{
for (int i=1;i<=5;i++)
{
System.out.println(i+"*5="+(i*5));
if(i==3) stop();
}
System.out.println("EXIT FIVE");
}
}

class Table7 extends Thread
{
public void run()
{
for (int j=1;j<=5;j++)
{
System.out.println(j+"*7="+(j*7));
try
{
sleep(1000);
}
catch(Exception e) { }

}
System.out.println("EXIT SEVEN");
}
}

class Table13 extends Thread
{
public void run()
{
for (int k=1;k<=5;k++)
{
System.out.println(k+"*13="+(k*13));
}
System.out.println("EXIT THIRTEEN");
}
}

class Lab4
{
public static void main(String args[])
{
Table5 t5=new Table5();
Table7 t7=new Table7();
Table13 t13=new Table13();
t5.setPriority(1);
t7.setPriority(5);
t13.setPriority(10);
System.out.println("MULTI THREADED USING PRIORITY");
t5.start();
t7.start();
t13.start();
}
}
LAB 5😄😄😁😁😅😆😆😆😂😂😂😂😅😁
import java.awt.*;
import java.applet.*;
public class shapes extends Applet
{
public void paint(Graphics g)
{
g.drawRect(10,10,60,50);
g.fillRect(10,10,60,50);
g.drawRoundRect(190,10,60,50,15,15);
g.fillRoundRect(70,90,140,100,30,40);
g.drawLine(0,0,100,100);
g.drawOval(10,10,50,50);
g.fillOval(70,90,140,100);
}
}
/*<applet code="shapes"width=300 height=200>
</applet>*/
LAB6😆😂😆😆😅😅😁😄😅😆😂😂
import java.awt.*;
import java.applet.*;
import java.awt.event.*;
public class Lab06 extends Frame implements ActionListener
{
TextField tname,tstreet,tcity,tpin;
Label lname,lstreet,lcity,lpin;
Button b1;
public Lab06()
{
setBackground(Color.gray);
setForeground(Color.red);
FlowLayout f=new FlowLayout();
setLayout(f);

lname=new Label("NAME ");
lstreet=new Label("STREET");
lcity=new Label("CITY ");
lpin=new Label("PINCODE");
tname=new TextField(35);
tstreet=new TextField(35);
tcity=new TextField(35);
tpin=new TextField(35);
b1=new Button("click me");

add(lname);
add(tname);
add(lstreet);
add(tstreet);
add(lcity);
add(tcity);
add(lpin);
add(tpin);
add(b1);
b1.addActionListener(this);
}
public void actionPerformed(ActionEvent e)
{
if(e.getSource()==b1)
{
tname.setText("RABIR");
tstreet.setText("75,JEEVA NAGAR");
tcity.setText("OOTY");
tpin.setText("641017");
}
}
public boolean handleEvent(Event e)
{
if(e.id==Event.WINDOW_DESTROY)
System.exit(0);
return(super.handleEvent(e));
}
public static void main(String args[])
{
Lab06 a=new Lab06();
a.resize(380,300);
a.show();
}
}
LAB 7😄😄😁😅😅😅😂😅😂😁
import java.applet.Applet;
import java.awt.*;
import java.awt.event.*;
public class Prac7 extends Applet implements ActionListener
{
List list1;
TextField Text1;
Button butt;
public void init()
{
Text1=new TextField(40);
add(Text1);
list1=new List(0,true);
list1.add("C");
list1.add("COBOL");
list1.add("C++");
list1.add("JAVA");
list1.add("Oracle");
list1.add("Visual Basic");
list1.add("Visual C++");
list1.add("Adobe");
add(list1);
butt=new Button("Show Selection ");
butt.addActionListener(this);
add(butt);
}
String Selections[];
public void actionPerformed(ActionEvent e)
{
String outstring=new String("you selected");
if(e.getSource()==butt)
{
Text1.setText("");

Selections=list1.getSelectedItems();
for(int loopIndex=0;loopIndex<Selections.length;loopIndex++)
{
outstring+=" "+Selections[loopIndex];
}
Text1.setText(outstring);
}
}
}
/* <applet code =Prac7.class width=400 height=400>
</applet> */
LAB 8😄😁😅😆😆😆😆😂😂😂😂😂😜😜
import java.awt.event.*;
import javax.swing.*;
import java.awt.*;
public class TextArea1 extends JFrame implements ActionListener
{
JTextField t1,t2,t3,t4;
JTextArea txt;
JLabel l1,l2,l3,l4;
JButton b1;

public TextArea1()
{
JPanel jp=(JPanel)getContentPane();
jp.setLayout(new FlowLayout(1));
l1=new JLabel("NAME=");
jp.add(l1);
t1= new JTextField(10);
jp.add(t1);
l2=new JLabel("AGE=");
jp.add(l2);
t2=new JTextField(2);
jp.add(t2);
l3=new JLabel("QUALIFICATION=");
jp.add(l3);
t3=new JTextField(6);
jp.add(t3);
l4=new JLabel("ADDRESS=");
jp.add(l4);
txt=new JTextArea(",",10,20);
jp.add(txt);
b1=new JButton("clear");
b1.setBackground(Color.red);
jp.add(b1);
b1.addActionListener(this);
}
public void actionPerformed(ActionEvent e)
{
try
{
if(e.getSource()==b1)
{
t1.setText(" ");
t2.setText(" ");
t3.setText(" ");
txt.setText(" ");
}
}
catch(Exception ex){}


}
public static void main(String args[])
{
TextArea1 a=new TextArea1();
a.setVisible(true);
a.setSize(300,200);
}
}
LAB 9😅😅😂😂😀😀😀😃😄😄😁😁😄😄
import java.awt.*;
public class MenuDemo extends Frame
{
MenuBar my=new MenuBar();
public MenuDemo()
{
setTitle("MenuBar");
FlowLayout F=new FlowLayout();
setLayout(F);
setMenuBar(my);
Menu fm=new Menu("File");
my.add(fm);
fm.add(new MenuItem("new"));
fm.add(new MenuItem("open"));
fm.add(new MenuItem("save"));
fm.add(new MenuItem("save as"));
fm.add(new MenuItem("Exit"));
Menu em=new Menu("Edit");
my.add(em);
em.add(new MenuItem("undo"));
em.add(new MenuItem("redo"));
em.add(new MenuItem("cut"));
em.add(new MenuItem("copy"));
em.add(new MenuItem("paste"));
em.add(new MenuItem("delete"));
em.add(new MenuItem("select"));
em.add(new MenuItem("select all"));
}
public boolean handleEvent(Event e)
{
if(e.id==Event.WINDOW_DESTROY)
System.exit(0);
return(super.handleEvent(e));
}
public static void main(String args[])
{
MenuDemo m=new MenuDemo();
m.resize(500,500);
m.show();
}
}
LAB10 😆😃😅😂😃😂😃😂😃🤣😀🤣😀🤣😀
LAB 11😀😂😀😅😅😀😅😀😅😀😅😀😅😀
import java.awt.*;
import java.awt.event.*;
import java.applet.*;
public class DrawShapes extends Applet implements MouseListener
{
int x,y,ch;
public void init()
{
addMouseListener(this);
ch=1;
}
public void paint(Graphics g)
{
switch(ch)
{
case 1:
g.drawOval(x,y,50,50);
break;
case 2:
g.drawRect(x,y,60,50);
break;
case 3:
g.drawOval(x,y,140,100);
}
ch++;
if(ch==4)
{
ch=1;
}
showStatus(x+","+y);
}
public void mouseClicked(MouseEvent me)
{
x=me.getX();
y=me.getY();
repaint();
}
public void mouseEntered(MouseEvent me)
{
x=me.getX();
y=me.getY();
repaint();
}
public void mouseExited(MouseEvent me){}
public void mousePressed(MouseEvent me){}
public void mouseReleased(MouseEvent me){}}
/*<applet code="DrawShapes.class" width=350 height=350>
</applet>*/
LAB 12😀😂🤣😅🤣😅😀😅😀😀😆😀😆
import java.io.*;
import java.util.Scanner;
class AppFile
{
public static void main(String args[])
{
try
{
Scanner sc = new Scanner(System.in);
String s;
RandomAccessFile f=new RandomAccessFile("content.txt","rw");
f.seek(f.length());
System.out.println("Enter a String to append into the file");
s = sc.next();
f.writeBytes(s);
f.close();
}
catch(IOException ioe)
{
System.out.println(ioe);
}
}
}