All java lab program of AIACTR 5 sem
AIM:
Program 1:
class Program1
{
public static void main(String[] args)
{
System.out.println("Hello World");
}
}
Program 2:
import java.util.*;
class Program2
{
public static void main(String[] args)
{
Scanner in=new Scanner(System.in);
System.out.println("Enter the first Number");
int a=in.nextInt();
System.out.println("Enter the Second Number");
int b=in.nextInt();
int s=a+b;
System.out.println(a+"+"+b+"="+s);
}
}
Program 3:
class Program3
{
public static void main(String[] args)
{
int x=010;
int y=06;
int z=x+y;
int a=0x010;
int b=0x6;
int c=a+b;
System.out.println("Octal Addition="+z);
System.out.println("Hexa Addition="+c);
}
}
Program 4:
class Program4
{
public static void main(String[] args)
{
String first[]={"Lion ","Crow " , "Fish "};
String middle[]={"lives in ","is fly in ","lives inside "};
String last[]={"Jungle.","sky. ","water."};
for(int i=0;i<3;i++)
{
System.out.print(first[i]+middle[i]+last[i]);
System.out.println();
}
}
}
#Program 5
import java.util.*;
class Program5
{
public static void main(String[] args)
{
Scanner in=new Scanner(System.in);
Random ran=new Random();
int x=ran.nextInt(10);
System.out.println(x);
int flag=0;
boolean guess=false;
while(!guess)
{
flag++;
System.out.println("Guess the number between 1 to 9");
int y=in.nextInt();
if(x==y)
{
System.out.println("Correct Guess in "+flag+" try");
break;
}
else
{
System.out.println("Wrong Guess. Please try Again");
}
}
}
}
Program 6:
Program 5:Shuffle the cards
import java.util.*;
class Cards
{
public static void main(String[] args)
{
Scanner in=new Scanner(System.in);
String card[][]={{"spades of A", "heart of A", "diamond of A", "Club of A"},
{"spades of 2", "heart of 2", "diamond of 2", "Club of 2"},
{"spades of 3", "heart of 3", "diamond of 3", "Club of 3"},
{"spades of 4", "heart of 4", "diamond of 4", "Club of 4"},
{"spades of 5", "heart of 5", "diamond of 5", "Club of 5"},
{"spades of 6", "heart of 6", "diamond of 6", "Club of 6"},
{"spades of 7", "heart of 7", "diamond of 7", "Club of 7"},
{"spades of 8", "heart of 8", "diamond of 8", "Club of 8"},
{"spades of 9", "heart of 9", "diamond of 9", "Club of 9"},
{"spades of 10", "heart of 10", "diamond of 10", "Club of 10"},
{"spades of J", "heart of J", "diamond of J", "Club of J"},
{"spades of Q", "heart of Q", "diamond of Q", "Club of Q"},
{"spades of K", "heart of K", "diamond of K", "Club of K"}};
Random r1=new Random();
Random r2=new Random();
for (int i = 12; i >0; i--) {
for(int j=3;j>0;j--)
{
int x=r1.nextInt(i);
int y=r2.nextInt(j);
System.out.println(x);
String temp = card[i][j];
card[i][j]= card[x][y];
card[x][y]= temp;
}
}
for(int i=0;i<13;i++)
{
System.out.println("Player "+(i+1)+" Cards");
for(int j=0;j<4;j++)
{
System.out.print(card[i][j]+" ");
}
System.out.println();
System.out.println();
}
}
}
Program 7:
import java.util.*;
class Circle
{
protected int r;
protected final double pi=3.14;
Circle(int r)
{
this.r=r;
}
}
class Area extends Circle
{
Area(int r)
{
super(r);
}
public void Show()
{
double a=3.14*r*r;
System.out.println("Area ="+a);
}
}
class Perimeter extends Circle
{
Perimeter(int r)
{
super(r);
}
public void Show()
{
double p=2*pi*r;
System.out.println("Perimeter ="+p);
}
}
class Program7
{
public static void main(String[] args)
{
Scanner in=new Scanner(System.in);
System.out.println("Enter the radius of the circle");
int r=in.nextInt();
Area a=new Area(r);
Perimeter p=new Perimeter(r);
a.Show();
p.Show();
}
}
Program 8:
import java.util.*;
interface Shape
{
void input();
void area();
void volume();
void show();
}
class Disk implements Shape
{
int r, h;
public final double pi=3.14;
public void input()
{
Scanner in=new Scanner(System.in);
System.out.println("Enter circle Radius");
r=in.nextInt();
System.out.println("Enter circle Height");
h=in.nextInt();
}
public void show()
{
System.out.println("Radius="+r);
System.out.println("Height="+h);
}
public void area()
{
double area=2*pi*r*(r+h);
System.out.println("Area="+area);
}
public void volume()
{
double volume=pi*r*r*h;
System.out.println("Volume="+volume);
}
}
class Program8
{
public static void main(String[] args)
{
Disk d=new Disk();
d.input();
d.show();
d.area();
d.volume();
}
}
Program 9:
import java.util.*;
class MyException extends Exception {
int s1;
MyException(int s2) {
s1 = s2;
}
@Override
public String toString() {
return ("Sorry Your age="+s1+" Age<18 are not allowed.");
}
}
public class Program9 {
public static void main(String args[]) {
Scanner in=new Scanner(System.in);
System.out.println("Enter your age");
int x=in.nextInt();
try
{
if(x<18)
{
throw new MyException(x);
}
else
{
System.out.println("Welcome to EVM");
}
}
catch(MyException e)
{
System.out.println(e);
}
}
}
Program 10
import java.io.*;
import java.util.*;
class M
{
void method()throws IOException
{
throw new IOException("device error");
}
}
class Program10
{
public static void main(String[] args)
{
Scanner in=new Scanner(System.in);System.out.println("Enter two number");
int a=in.nextInt();
int b=in.nextInt();
try
{
int d=a/b;
System.out.println("Division is="+d);
}
catch(ArithmeticException e)
{
System.out.println("int number can noy be divide by zero");
System.out.println(e);
}
finally
{
System.out.println("finally block is executed");
}
try{
M m=new M();
m.method();
}
catch(Exception e)
{
System.out.println("exception handled");
}
System.out.println("normal flow...");
}
}
Program 11: Applet Program
import java.applet.*;
import java.awt.*;
/* <applet code = "AppletTest.class" width = 300 height = 300> </applet> */
public class AppletTest extends Applet
{
public void init()
{
System.out.println("Applet Initialized");
}
public void start()
{
System.out.println("Applet is start");
}
public void paint(Graphics g)
{
System.out.println("Applet is painted");
//super.paint( g );
g.drawString("Hello",123,125);
}
public void destroy()
{
System.out.println("Applet Destroy");
}
}
Program 12/13:
import java.awt.*;
import java.awt.event.*;
public class MouseMotionExample extends Frame implements MouseMotionListener{
MouseMotionExample(){
addMouseMotionListener(this);
setSize(300,300);
setLayout(null);
setVisible(true);
}
public void mouseDragged(MouseEvent e) {
Graphics g=getGraphics();
g.setColor(Color.BLUE);
g.fillOval(e.getX(),e.getY(),10,10);
}
public void mouseMoved(MouseEvent e) {}
public static void main(String[] args) {
new MouseMotionExample();
}
}
Program 14:Write a program to demonstrate wait and notify for the Multithreading in Java
import java.util.*;
class Atm
{
static int balance=1000;
synchronized void Withdraw(int money)
{
System.out.println("Processing");
if((balance-money)<0)
{
System.out.println("Insufficient balance");
try
{
wait();
}
catch(Exception e)
{
System.out.println(e);
}
}
balance=balance-money;
System.out.println("Withdraw Complete. Remaining Balance="+balance);
}
synchronized void deposit(int money)
{
balance=balance+money;
System.out.println(money+" deposit succesfully");
notify();
}
}
class Interthread
{
public static void main(String[] args)
{
final Atm a=new Atm();
new Thread(){
public void run(){
a.Withdraw(1500);}
}.start();
new Thread(){
public void run(){
a.deposit(1500);}
}.start();
}
}
Program 15: Write a program to implement synchronizing
class Synch
{
synchronized void print(int n)
{
for(int i=1;i<=n;i++)
{
try
{
Thread.sleep(500);
}
catch(Exception e)
{
System.out.println(e);
}
System.out.println(n*i);
}
}
public static void main(String[] args)
{
final Synch s=new Synch();
Thread t1=new Thread()
{
public void run()
{
s.print(8);
}
};
Thread t2=new Thread(){
public void run()
{
s.print(9);
}
};
t1.start();
t2.start();
}
}
Program 16:
import java.io.*;
public class FileWrite1 {
public static void main(String[] args) throws Exception{
FileWriter fw=new FileWriter("Robot.txt");
BufferedWriter bf=new BufferedWriter(fw);
bf.write(65);
bf.newLine();char ch[]={'a','p','p','l','e'};
bf.write(ch);
bf.newLine();
bf.write("B");
bf.newLine();
bf.write("Ball");
bf.flush();
bf.close();
FileReader fr=new FileReader("Robot.txt");
BufferedReader br=new BufferedReader(fr);
String s=br.readLine();
while(s!=null)
{
System.out.println(s);
s=br.readLine();
}
bf.close();
}
}
Probram 17: Read and write from the socket
MyClient.java File
import java.io.*;
import java.net.*;
class Myclient
{
public static void main(String[] args) throws Exception
{
Socket s=new Socket("localhost",3333);
DataInputStream din=new DataInputStream(s.getInputStream());
DataOutputStream dout=new DataOutputStream(s.getOutputStream());
BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
String str1="";
String str2="";
while(!str1.equals("stop"))
{
str1=br.readLine();
dout.writeUTF(str1);
dout.flush();
str2=din.readUTF();
System.out.println("Server:"+str2);
}
dout.close();
s.close();
}
}
MyServer.java file
import java.io.*;
import java.net.*;
class MyServer
{
public static void main(String[] args) throws Exception
{
ServerSocket ss=new ServerSocket(3333);
Socket s=ss.accept();
DataInputStream din=new DataInputStream(s.getInputStream());
DataOutputStream dout=new DataOutputStream(s.getOutputStream());
BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
String str1="";
String str2="";
while(!str1.equals("stop"))
{
str1=din.readUTF();
System.out.println("Client Says:"+str1);
str2=br.readLine();
dout.writeUTF(str2);
dout.flush();
}
din.close();
s.close();
ss.close();
}
}
Program 18:
Student.java
import java.io.Serializable;
class Student implements Serializable
{
String name;
int rollno;
Student(int rollno,String name)
{
this.rollno=rollno;
this.name=name;
}
}
StudentDat.java
import java.io.*;
class StudentDat
{
public static void main(String[] args) throws Exception
{
Student s1 =new Student(001,"Aditya");
FileOutputStream fout=new FileOutputStream("robot.txt");
ObjectOutputStream out=new ObjectOutputStream(fout);
out.writeObject(s1);
out.flush();
System.out.println("Success");
}
}
Program 19.1 : ArrayList
import java.util.*;
class ArrayListExample
{
public static void main(String[] args)
{
Scanner in=new Scanner(System.in);
ArrayList<Integer> a = new ArrayList<Integer>();
System.out.println("Enter the Number of Elements");
int n=in.nextInt();
for(int i=0;i<n;i++)
{
int x=in.nextInt();
a.add(x);
}
System.out.println();
System.out.print("Elements Are:");
for(int i=0;i<n;i++)
{
System.out.print(a.get(i)+" ");
}
System.out.println(" ");
System.out.print("Sorted Elements Are:");
Collections.sort(a);
for(int i=0;i<n;i++)
{
System.out.print(a.get(i)+" ");
}
System.out.println(" ");
System.out.println("List Size is="+ a.size());
System.out.println("Lasgest Element is="+ a.get(a.size()-1));
}
}
Program 19.2 HashSet
import java.util.*;
class SetExample
{
public static void main(String[] args)
{
Scanner in=new Scanner(System.in);
HashSet<Integer> a = new HashSet<Integer>();
System.out.println("Enter the Number of Elements");
int n=in.nextInt();
for(int i=0;i<n;i++)
{
int x=in.nextInt();
a.add(x);
}
System.out.print("\nElements are ");
Iterator itr=a.iterator();
while(itr.hasNext())
{
System.out.print(itr.next()+" ");
}
System.out.println("\nEnter the element to remove");
int x=in.nextInt();
a.remove(x);
System.out.print("\n "+x+" remove.\nNew set elements are ");
itr=a.iterator();
while(itr.hasNext())
{
System.out.print(itr.next()+" ");
}
}
}
Program 20: HashMap
import java.util.*;
class TreeSetExample
{
public static void main(String[] args)
{
Scanner in=new Scanner(System.in);
HashMap<Integer,String> hm = new HashMap<Integer,String>();
System.out.println("Enter the Number of Elements");
int n=in.nextInt();
for(int i=0;i<n;i++)
{
System.out.println("ENter the subject Code");
int x=in.nextInt();
System.out.println("ENter the subject Name");
String y=in.next();
hm.put(x,y);
}
for(Map.Entry m:hm.entrySet()){
System.out.println(m.getKey()+" "+m.getValue());
}
}
}
