Q11’a’->WAP TO FIND OCCURRENCE OF A SUBSTRING IN A STRING USING SPLIT METHOD.

import java.io.*;class Term11{public static void main(String s[])throws Exception{

BufferedReader br=new BufferedReader(new InputStreamReader(System.in));System.out.println("enter the string");String s1=br.readLine();System.out.println("enter the substring");String s2=br.readLine();String s3[]=s1.split(" ");int cn=0;

for(int i=0;i<s3.length;i++){

for(int j=0;j<s3[i].length();j++){

if(s3[i].charAt(j)==s2.charAt(0)){

String sub=s3[i].substring(j,j+s2.length());if(sub.equals(s2)){

cn++;j=j+s2.length();}

}

}}

System.out.println("the occurence of substring "+s2+" is "+cn);}}

OUTPUT:-

Q11’b’->WITHOUT USING SPLIT METHOD.

import java.io.*;class Term112{public static void main(String s[])throws Exception{

BufferedReader br=new BufferedReader(new InputStreamReader(System.in));System.out.println("enter the string");String s1=br.readLine();System.out.println("enter the substring");String s2=br.readLine();int cn=0;

for(int j=0;j<s1.length();j++){

if(s1.charAt(j)==s2.charAt(0)){

String sub=s1.substring(j,j+s2.length());if(sub.equals(s2)){

cn++;j=j+s2.length();}

}

}

System.out.println("the occurence of substring "+s2+" is "+cn);}}

OUTPUT:-

Q13->WAP TO FIND OCCURRENCE OF UR NAME IN A FILE.

import java.io.*;class Term13{public static void main(String s[])throws Exception{int cn=0;String m;String m2="komal";File fn=new File("D:/my.txt");fn.createNewFile();

BufferedReader br=new BufferedReader(new FileReader(fn));while((m=br.readLine())!=null){

for(int i=0;i<m.length();i++){

if(m.charAt(i)==m2.charAt(0)){

String sub=m.substring(i,i+m2.length());if(sub.equals(m2)){

cn++;i=i+m2.length();}

}}

}br.close();

System.out.println(cn);}}

OUTPUT:->

Q14->WAP to copy one file content into another file.

import java.io.*;public class Question14 {

public static void main(String[] args) throws Exception{FileReader fr= new FileReader(new File("temp"));FileWriter fw= new FileWriter(new File("temp1"));BufferedReader br= new BufferedReader(fr);String str;while((str=br.readLine()) != null){

fw.write(str);}fw.close();File f= new File("temp1");if(!f.exists())

System.out.println("file does not exist");System.out.println("content of copied file=");FileInputStream fis= new FileInputStream(f);char data;while((data=(char)fis.read()) != -1){

System.out.print(data);}fis.close();fr.close();

}

}

OUTPUT:-

Q15:->WAP TO DRAW THE GIVEN FIGURE.

import java.awt.*;import java.applet.*;import java.util.*;public class Term15 extends Applet{

int x,y;public void init(){

System.out.println("enter the value of x,y=");Scanner sc = new Scanner(System.in);x=sc.nextInt(); y=sc.nextInt();

}public void paint(Graphics g){

g.drawRect(x,y,66,66);g.drawRect(x-21,y-19,110,110);g.drawOval(x-14,y-14,97,97);

}}

/*<applet code="Term15.class" width=400 height=400></applet>*/

OUTPUT:->

Q16->wap to draw a square with red color. color of this square will

Reduce after each 5ms?

import java.awt.Color;import java.applet.Applet;import java.awt.Graphics;import java.util.Timer;

public class Question16 extends Applet{

int x=0;public void paint(Graphics g){

x=x+25;Color c= new Color(255-x,255-x,255-x);g.drawRect(0,0,50,50);g.setColor(c);g.fillRect(0,0,50,50);try{Thread.sleep(1000);repaint();}catch (Exception e) {}

}}/*<applet code="Question16.java" width=400 height=400></applet>*/

OUTPUT:-

Q17->WAP TO DRAW A CIRCLE AND SQUARE USING BUTTON.

import java.applet.*;import java.awt.*;import java.awt.event.*;public class Term17 extends Applet implements ActionListener{

Button b1,b2;Panel p1;int flag=2; public void init()

{p1=new Panel();b1=new Button("Circle");b2=new Button("Square");add(p1);p1.add(b1);p1.add(b2);b1.addActionListener(this);b2.addActionListener(this);

}

public void actionPerformed(ActionEvent e){

if(e.getSource()==b1){

flag=1;repaint();}else{

flag=0;repaint();}

}

public void paint(Graphics g){

if(flag==1)g.drawOval(150,150,100,100);

else if(flag==0)g.drawRect(150,150,100,100);

}}

/*<applet code="Term17.java" width=400 height=400></applet>*/

OUTPUT:->

Q18->wap to validate a textfield as email field means only syntax of abc @pqr.com can be * used in textfield?

import java.applet.*; import java.awt.*;import java.awt.event.*;import java.util.regex.*;public class Question18 extends Applet implements ActionListener{

Pattern p=Pattern.compile("[a-zA-Z]*[0-9]*@[a-zA-Z]*.[a-zA-Z]*");Button b;TextField tf;public void init(){

Panel p= new Panel();add(p);Label l= new Label("enter the email");p.add(l);tf=new TextField(30);b= new Button("Validate");b.addActionListener(this);p.add(tf);p.add(b);

}public void actionPerformed(ActionEvent e){

String s= tf.getText();System.out.println(s);Matcher m=p.matcher(s);boolean b1=m.matches();if(b1==true){

System.out.println("Valid Email ID");}else{

System.out.println("InValid Email ID");}

}}/*<applet code="Question18.java" width=400 height=400></applet>*/OUTPUT:

Q19->wap to create a scientific calculator that may perform at least 6 calculations

* including power,squareroot, sign?

import java.applet.*;import java.awt.*;import java.awt.event.*;public class Question19 extends Applet implements ActionListener{

Panel p1,p2,p3,p4; int d1,d2,op,d=1;Button b1,b2,b3,b4,b5,b6,b7,b8,b9,b0,bp,bmi,bm,bd,clear,dec,result,pow;TextField t1; FlowLayout f1,f2;GridLayout g1,g2; Label l;public void init(){

p1= new Panel(); p2 = new Panel(); p3=new Panel(); p4=new Panel();g2= new GridLayout(4,1); setLayout(g2);l= new Label("Calculater"); t1= new TextField(45);result= new Button("=");add(p4); add(p1); add(p3); p4.add(l); p1.add(t1);p3.add(result); result.addActionListener(this);g1= new GridLayout(4,4 );p2.setLayout(g1); add(p2);b1 = new Button("1"); p2.add(b1);b1.addActionListener(this);b2 = new Button("2"); p2.add(b2);b2.addActionListener(this);b3 = new Button("3"); p2.add(b3);b3.addActionListener(this);bp = new Button("+"); p2.add(bp);bp.addActionListener(this);b4 = new Button("4"); p2.add(b4);b4.addActionListener(this);b5 = new Button("5"); p2.add(b5);b5.addActionListener(this);b6 = new Button("6"); p2.add(b6);b6.addActionListener(this);bmi = new Button("-"); p2.add(bmi);bmi.addActionListener(this);b7 = new Button("7"); p2.add(b7);b7.addActionListener(this);b8 = new Button("8"); p2.add(b8);b8.addActionListener(this);b9 = new Button("9"); p2.add(b9);b9.addActionListener(this);bm = new Button("*"); p2.add(bm);bm.addActionListener(this);clear= new Button("c"); p2.add(clear);clear.addActionListener(this);b0 = new Button("0"); p2.add(b0);b0.addActionListener(this);pow = new Button("^"); p2.add(pow);pow.addActionListener(this);bd = new Button("/"); p2.add(bd);bd.addActionListener(this);

}public void actionPerformed(ActionEvent e){

String x=e.getActionCommand();String x1=t1.getText();

if(x=="0"||x=="1"||x=="2"||x=="3"||x=="4"||x=="5"||x=="6"||x=="7"||x=="9"||x=="8")

{ if(t1.getText() == "") t1.setText(x);else t1.setText(x1+x);

}if(x == "c") t1.setText("");if(x=="+"){

try{d1=Integer.parseInt(x1);

}catch (Exception e1) { }

t1.setText(""); op=1;}else if(x=="-"){

try{d1=Integer.parseInt(x1);

}catch (Exception e1) {}t1.setText(""); op=2;

}else if(x=="*"){

try{d1=Integer.parseInt(x1);

}catch (Exception e1) {}t1.setText(""); op=3;

}else if(x=="/"){

try{d1=Integer.parseInt(x1);

}catch (Exception e1) {}t1.setText(""); op=4;

}else if(x=="^"){ try{

d1=Integer.parseInt(x1);

}catch (Exception e1) {}t1.setText(""); op=5;

}if(x=="="){

try{d2=Integer.parseInt(t1.getText());d=1;}catch (Exception e1) {

}t1.setText("");

if(op==1){

d=d1+d2;t1.setText(Integer.toString(d));

}if(op==2){

d=d1-d2;t1.setText(Integer.toString(d));

}if(op==3){

d=d1*d2;t1.setText(Integer.toString(d));

}if(op==4){

d=d1/d2;t1.setText(Integer.toString(d));

}if(op==5){

try{for(int i=1;i<=d2;i++)

d=d*d1;t1.setText(Integer.toString(d));}catch (Exception e1) {

}}op=6;

}}

}

/*

<applet code="Question18.java" width=400 height=400></applet>*/

OUTPUT:-

Q20->wap to create a login form with validation. login name can be only character values while * password only numeric values using frame and window closing event.

import java.awt.*;import java.awt.event.*;import java.util.regex.*;public class Question20 extends Frame implements ActionListener{

Pattern p1 = Pattern.compile("[1-zA-Z]*");Pattern p2=Pattern.compile("[0-9]*");public static TextField name,age;public static void main(String[] s){

Question20 q= new Question20();Frame f = new Frame(); FlowLayout fl = new FlowLayout();f.setLayout(fl); f.setVisible(true);f.setSize(200, 200);

name = new TextField(30); age= new TextField(30);Label l1= new Label("enter the name");Label l2 = new Label("enter the age");f.add(l1); f.add(name);f.add(l2);f.add(age);Button b= new Button("validate");f.add(b); b.addActionListener(q);f.addWindowListener(new WindowAdapter() {

public void windowClosing(WindowAdapter e){

System.exit(0);}

});}

public void actionPerformed(ActionEvent e){

Matcher m1=p1.matcher(name.getText());boolean b1= m1.matches();Matcher m2=p2.matcher(age.getText());boolean b2= m2.matches();System.out.println(b1+","+b2);if(b1==true)

System.out.println("valid name");else

System.out.println("invalid name");if(b2==true)

System.out.println("valid age");else

System.out.println("invalid age");} }

/*<applet code="Question20.java" width=400 height=400></applet>*/

OUTPUT:-

Q21->WAP wap to select a country from a list on selection appropriate flag with 5 line description of that country will display in textarea.

import java.awt.*;import java.applet.*;import java.awt.event.*;import java.awt.*;public class Term21 extends Applet implements ActionListener{String s1,s2,s3,s4,s5;Label l1;List l=new List(5);TextArea t1;Image im1,im2,im3,im4,im5;int flag; public void init() {

setLayout(new FlowLayout(FlowLayout.LEFT));l1=new Label("SELECT ANY COUNTRY"); t1=new TextArea(10,70); add(l1);add(l);add(t1);im1=getImage(getDocumentBase(),getParameter("img1"));im2=getImage(getDocumentBase(),getParameter("img2"));im3=getImage(getDocumentBase(),getParameter("img3"));im4=getImage(getDocumentBase(),getParameter("img4"));im5=getImage(getDocumentBase(),getParameter("img5"));l.add("INDIA");l.add("USA");l.add("ENGLAND");l.add("CHINA");l.add("PAKISTAN");

l.addActionListener(this); s1="India, officially the Republic of India is a country in South Asia,\n"+" It is the

seventh-largest ountry by geographical area, the second-most populous country with over 1.2 billion people,\n"+"and the most populous democracy in the world.";

s2="The United States of America is a federal constitutional republic comprising fifty states and a federal district.\n"+" The country is situated mostly in central North America, where its forty-eight contiguous states and Washington,\n"+" D.C., the capital district, lie between the Pacific and Atlantic Oceans,\n"+" bordered by Canada to the north and Mexico to the south. ";

s3="England is a country that is part of the United Kingdom.\n"+"It shares land borders with Scotland to the north and Wales to the west;\n"+" the Irish Sea is to the north

west, the Celtic Sea to the south west,\n"+" while the North Sea to the east and the English Channel to the south separate it from continental Europe";

s4="Pakistan, officially the Islamic Republic of Pakistan ,is a sovereign country in South Asia.\n"+"It sits at the crossroads of the strategically important regions of South Asia,\n"+" Central Asia and the Middle East.";

s5="China, officially the People's Republic of China (PRC),\n"+" is the world's most-populous country,\n"+" with a population of over 1.3 billion.\n"+" The East Asian state covers approximately 9.6 million square kilometres,";

} public void actionPerformed(ActionEvent e){

if(l.getSelectedItem()=="INDIA"){

flag=0;repaint();t1.setText(s1);}else if(l.getSelectedItem()=="USA"){

flag=1;repaint();t1.setText(s2);}else if(l.getSelectedItem()=="ENGLAND"){

flag=2;repaint();t1.setText(s3);}else if(l.getSelectedItem()=="CHINA"){

flag=3;repaint();t1.setText(s5);}else if(l.getSelectedItem()=="PAKISTAN"){

flag=4;repaint();t1.setText(s4);}

}public void paint(Graphics g){

if(flag==0)g.drawImage(im1,250,200,this);if(flag==1)g.drawImage(im2,250,200,this);if(flag==2)g.drawImage(im3,250,200,this);if(flag==3)g.drawImage(im4,250,200,this);if(flag==4)g.drawImage(im5,250,200,this);

}}/*<applet code="Term21.java" width=1000 height=1000><param name="img1" value="fgg2.jpg"><param name="img2" value="usa.jpg"><param name="img3" value="england.jpg"><param name="img4" value="china.jpg"><param name="img5" value="pakis.jpg"></applet>*/

OUTPUT:

Q23->wap to create a thread based applet which will display a text within a range of a window.

import java.applet.Applet;import java.awt.Graphics;public class Question23 extends Applet{

int i=9,j=9;int x=getX();Graphics g;public void paint(Graphics g){

for(i=0;i<700;i=i+16){

try{g.drawString("hello",i,i);

Thread.sleep(400);repaint();

}catch (Exception e) {}}

}

}

OUTPUT:

Q24-> WAP where a thread can be synchronized.

public class Term24{

public static void main(String s[]){

A p=new A();B b1=new B(p,"Komal");B b2=new B(p,"Dobhal");

}}class A{

synchronized void show(String s)throws Exception{

System.out.print("("+s);Thread.sleep(200);System.out.print(")");

}}class B extends Thread{

A x; String n;B(A y, String s){

x=y;n=s; this.start();}

public void run(){

try{x.show(n);}catch(Exception e){}

}}OUTPUT:

Q26->Wap for connection oriented apps to send a number from client to server will respond with its square?

//SERVER SIDEimport java.io.*;import java.net.*;class Server{

public static void main(String s[]) throws Exception{ ServerSocket ss=new ServerSocket(2000); System.out.println("Start"); Socket s1=ss.accept();

InputStream is=s1.getInputStream();DataInputStream dis=new DataInputStream(is);int st=dis.readInt(); OutputStream os=s1.getOutputStream();DataOutputStream dos=new DataOutputStream(os);dos.writeInt(st*st);

dis.close();dos.close();}}//CLIENT SIDEimport java.io.*;import java.net.*;import java.util.*;public class Client{

public static void main(String s[]) throws Exception{

Scanner sc=new Scanner(System.in) Socket s2=new Socket("DeepakSharma-PC",2000);

System.out.println("enter a no"); int n=sc.nextInt(); OutputStream os=s2.getOutputStream();DataOutputStream dos=new DataOutputStream(os);dos.writeInt(n);InputStream is=s2.getInputStream();DataInputStream dis=new DataInputStream(is);int st=dis.readInt();System.out.println("the square is "+st); dos.close(); dis.close();

}

}

OUTPUT:-

Q26->Wap to read a from URL and then to copy all the content into a file?

import java.io.*;import java.net.*;import java.util.Date;public class Question27 { public static void main(String[] str) throws Exception {

URL obj = new URL("http://www.yahoo.com/index.html"); URLConnection conn = obj.openConnection(); System.out.println("Date:"+new Date(conn.getDate())); System.out.println("Content-type: " +conn.getContentType()); System.out.println("Expiry-date: "+conn.getExpiration()); System.out.println("Last modification time: "+ new Date(conn.getLastModified())); int l=conn.getContentLength(); System.out.println("length of content: "+l); if(l==0)

System.out.println("content is not available"); else { int ch;

InputStream in = conn.getInputStream(); File f = new File("Index"); FileWriter fw = new FileWriter(f); while((ch=in.read()) != -1)

fw.write((char)ch); fw.close();

} }}OUTPUT:-

Q27->IMPLEMENTATION OF A STACK USING VECTOR CLASS.

import java.io.*;import java.util.*;class Term28{public static void main(String s[])throws Exception{Vector v=new Vector(10,3);int n;Scanner sc=new Scanner(System.in);System.out.println("A MENU DRIVEN PGM");do{System.out.println("1 for PUSH");System.out.println("2 for POP");System.out.println("3 for DISPLAY");System.out.println("4 for EXIT");System.out.println("enter ur choice"); n=sc.nextInt();switch(n){

case 1:System.out.println("Enter the element");BufferedReader br=new BufferedReader(new InputStreamReader(System.in));v.addElement(br.readLine());break;

case 2:System.out.println(v.elementAt(v.size()-1)+" is successfully removed");v.removeElementAt(v.size()-1);break;

case 3:for(int i=v.size()-1;i>=0;i--)

System.out.println(v.elementAt(i));break;case 4:

System.exit(1);}}while(n<5);}}

OUTPUT:-