├── hello.java
├── typecon.java
├── arithmetic.java
├── stiudentinfo.java
├── nestedif.java
└── switchcase.java


/hello.java:
--------------------------------------------------------------------------------
1 | class hello
2 | {
3 | public static void main(String a[])
4 | {
5 | System.out.print("hello world");
6 | }
7 | }


--------------------------------------------------------------------------------
/typecon.java:
--------------------------------------------------------------------------------
 1 | public class typecon
 2 | {
 3 | public static void main(String []args)
 4 | {
 5 | int rno=117;
 6 | double rnn=rno;
 7 | System.out.println(rno);
 8 | System.out.println(rnn);
 9 | }
10 | }


--------------------------------------------------------------------------------
/arithmetic.java:
--------------------------------------------------------------------------------
 1 | import java.util.*;
 2 | class add_1 
 3 | {
 4 | public static void main(String args[])
 5 | {
 6 | Scanner sc=new Scanner(System.in);
 7 | System.out.println("enter values of a and b");
 8 | int a=sc.nextInt();
 9 | int b=sc.nextInt();
10 | System.out.println(a+"+"+b+"is" +(a+b));
11 | System.out.println(a+"-"+b+"is" +(a-b));
12 | System.out.println(a+"*"+b+"is" +(a*b));
13 | System.out.println(a+"/"+b+"is" +(a/b));
14 | }
15 | }


--------------------------------------------------------------------------------
/stiudentinfo.java:
--------------------------------------------------------------------------------
 1 | public class stiudentinfo
 2 | {
 3 | public static void main(String[]args)
 4 | {
 5 | Student s=new Studenr("swapnikia","7117");
 6 | s.display();
 7 | }
 8 | }
 9 | class Student              
10 | {
11 | string nam,rno;
12 | Student(String name,String rno)
13 | {
14 | nam=name;
15 | rn=rno;
16 | }
17 | public void display()
18 | {
19 | System.out,println("welcome %s rno is % \n"nam,rn)
20 | }
21 | }
22 | }
23 | 
24 | 


--------------------------------------------------------------------------------
/nestedif.java:
--------------------------------------------------------------------------------
 1 | import java.util.*;
 2 | public class nestedif
 3 | {
 4 | public static void main(String[]args)
 5 | {
 6 | Scanner sc=new Scanner(System.in);
 7 | System.out.println("enetr your fav iconic character");
 8 | String act=sc.nextLine();
 9 | if(act.equals("iron man"))
10 | {
11 | System.out.println("great choice");
12 | System.out.println("enter"+act+"real name");
13 | String reall=sc.nextLine();
14 | if(reall.equalsIgnoreCase("tony start"))
15 | {
16 | System.out.println("cool actor");
17 | }
18 | }
19 | else
20 | {
21 | System.out.println(act);
22 | }
23 | sc.close();
24 | }
25 | }
26 | 


--------------------------------------------------------------------------------
/switchcase.java:
--------------------------------------------------------------------------------
 1 | import java.util.*;
 2 | public class switchcase
 3 | {
 4 | public static void main(String[]args)
 5 | {
 6 | int a=8,b=8;
 7 | Scanner sc=new Scanner(System.in);
 8 | System.out.println("******");
 9 | System.out.println("*ARITHMETIC OPERATIONS");
10 | System.out.println("1.ADD");
11 | System.out.println("2.SUB");
12 | System.out.println("3.MUL");
13 | System.out.println("4.DIV");
14 | System.out.println("ENETR YOUR CHOICE");
15 | int ch=sc.nextInt();
16 | switch(ch)
17 | {
18 | case 1-> System.out.println("addition is"+(a+b));
19 | case 2-> System.out.println("subtraction is"+(a-b));
20 | case 3-> System.out.println("multiplication is"+(a*b));
21 | case 4-> System.out.println("addition is"+(a/b));
22 | default->System.out.println("give proper option");
23 | }
24 | sc.close();
25 | }
26 | }


--------------------------------------------------------------------------------