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java Assignment programs.
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(1).
import java.util.*;
class stringOperation{
Scanner sc = new Scanner(System.in);
StringBuffer str= new StringBuffer("hello my my my name is nevil");
String s1 = new String(str);
int p,sp,ep;
String s;
void setString(){
}
void display(){
System.out.print("String is:-");
System.out.print(str);
}
void insert(){
System.out.print("Enter the position:-");
p =sc.nextInt();
sc.nextLine();
System.out.print("Enter the String:-");
s =sc.nextLine();
str.insert(p,s);
}
void search(){
System.out.print("Enter the String which you want to search:-");
s =sc.nextLine();
int c = 0;
String word[] = s1.split(" ");
for (int i = 0; i < word.length; i++)
{
if (s.equals(word[i])){
c++;
}
}
System.out.println("String is :-"+c);
}
void del(){
System.out.print("Enter the Starting position:-");
sp =sc.nextInt();
System.out.print("Enter the Ending position:-");
ep =sc.nextInt();
str.delete(sp, ep);
}
}
class inserchdel {
public static void main(String args[]){
Scanner sc = new Scanner(System.in);
stringOperation s = new stringOperation();
int ch;
do{
System.out.println("\n\n1.insert");
System.out.println("2.serach or count");
System.out.println("3.delete");
System.out.println("4.display");
System.out.println("5.Exit");
System.out.print("Enter the choise:-");
ch = sc.nextInt();
s.setString();
switch(ch){
case 1:
s.insert();
break;
case 2:
s.search();
break;
case 3:
s.del();
break;
case 4:
s.display();
break;
}
}while(ch!=5);
}
}
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//19 applet
import java.applet.*;
import java.awt.*;
/*
<applet code="appletdate2.class" height="500" width="500">
</applet>
*/
public class appletdate2 extends Applet {
public void paint(Graphics g) {
int x[] = { 200, 100, 300 };
int y[] = { 100, 300, 300 };
g.setColor(Color.cyan);
g.drawPolygon(x, y, 3);
g.fillPolygon(x, y, 3);
g.setColor(Color.yellow);
g.drawOval(140, 180, 120, 120);
g.fillOval(140, 180, 120, 120);
g.setColor(Color.black);
g.drawString("13 / 3 / 2022", 170, 250);
// g.setColor(Color.cyan);
// g.fillOval(100, 100, 200, 200);
}
}
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//21 home
import java.applet.*;
import java.awt.*;
/*
<applet code="home.class" height="900" width="1000"></applet>
*/
public class home extends Applet{
public void paint(Graphics g){
int x[]={200,100,300};
int y[]={100,200,200};
g.setColor(Color.yellow);
g.fillPolygon(x,y,3);
g.drawPolygon(x,y,3);
g.setColor(Color.cyan);
g.fillRect(100,200,200,200);
g.drawRect(100,200,200,200);
g.setColor(Color.green);
g.fillRect(150,250,100,150);
g.drawRect(150,250,100,150);
g.setColor(Color.black);
int a[] ={200,600,600,300};
int b[] ={100,100,200,200};
g.drawPolygon(a,b,4);
g.fillPolygon(a,b,4);
g.setColor(Color.red);
g.fillRect(300,200,300,200);
g.drawRect(300,200,300,200);
g.setColor(Color.gray);
g.fillRect(400,250,100,100);
g.drawRect(400,250,100,100);
}
}
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//7
import java.util.*;
class Publisher
{
int pubid;
String pubName;
Scanner sc = new Scanner(System.in);
void setPublisher()
{
System.out.print("Enter the publisher id:-");
pubid = sc.nextInt();
sc.nextLine();
System.out.print("Enter the publisher Name:-");
pubName = sc.nextLine();
}
}
class book extends Publisher{
Scanner sc = new Scanner(System.in);
int Bookid;
String BookName;
String Author;
void setBookDetails(){
System.out.print("Enter the book id:-");
Bookid = sc.nextInt();
sc.nextLine();
System.out.print("Enter the book Name:-");
BookName = sc.nextLine();
System.out.print("Enter the book Author:-");
Author = sc.nextLine();
}
void getBookDetails(){
System.out.print("\npublisher id i1s:- "+pubid);
System.out.print("\npublisher Name is:- "+pubName);
System.out.print("\nbook id is:- "+Bookid);
System.out.print("\nbook Name is:- "+BookName);
System.out.print("\nAuthor is:- "+Author);
}
}
class bookpub {
public static void main(String args[]){
book b = new book();
b.setPublisher();
b.setBookDetails();
b.getBookDetails();
}
}
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