Write a main method to create an object of a class and call the above member methods.
Solution :
import
java.util.Scanner;
class student
{
Scanner S = new Scanner(System.in);
String name;int age;double m1,m2,m3,max,avg;
student(String nam,int ag,double a,double b,double c)
{
name = nam;
age = ag;
a=m1;
b=m2;
c=m3;
}
void input()
{
System.out.println("Enter the name of student and her/his age");
name = S.next();
age = S.nextInt();
System.out.println("Enter the marks of student in three subjects :-");
m1=S.nextDouble();
m2=S.nextDouble();
m3=S.nextDouble();
}
void compute()
{
max = Math.max(m1,Math.max(m2,m3));
avg = (m1+m2+m3)/3;
}
void display()
{
System.out.println("Student
Name
:"+name);
System.out.println("Student
Age
:"+age);
System.out.println("Student's
m1
:"+m1);
System.out.println("Student's
m2
:"+m2);
System.out.println("Student's
m3
:"+m3);
System.out.println("Student's maximum marks :"+max);
System.out.println("Student's average matks :"+avg);
}
void main()
{
System.out.println("Enter the name of student and her/his age");
name = S.next();
age = S.nextInt();
System.out.println("Enter the marks of student in three subjects :-");
m1=S.nextDouble();
m2=S.nextDouble();
m3=S.nextDouble();
student ob = new student(name,age,m1,m2,m3);
ob.input();
ob.compute();
ob.display();
}
}
Question 6
Shasha Travels Pvt. Ltd. gives the following discount to its customers:
Discount Ticket amount
18% Above Rs. 70000
16% Rs. 55001 to Rs. 70000
12% Rs. 35001 to Rs. 55000
10% Rs. 25001 to Rs. 35000
2% Less than Rs. 25001
Write a program to input the name and ticket amount for the customer and calculate the discount amount and net amount to be paid. Display the output in the following format for each customer:
SI No. Name Ticket charges Discount Net amount
1. - - - -
(Assume that there are 15 customers, first customer is given the serial no (Sl.No.) l, next customer 2
and so on) |
Solution :
import
java.util.Scanner;
class
Quection6
{
Scanner S = new Scanner(System.in);
String Name[]= new String[15];
int ticket[] = new int[15];
double discount[] = new double[15];
double netamt[] = new double[15];
public void main()
{
System.out.println("Enter the Names and ticket Number of :-");
for(int i = 0;i<15;i++)
{
System.out.println("Name of "+(i+1)+"th Customer");
Name[i] = S.next();
System.out.println("Ticket Cost :");
ticket[i] = S.nextInt();
if(ticket[i]<25001)
discount[i] = 1/50*ticket[i];
if((ticket[i]>=25001)&&(ticket[i]<35000))
discount[i] = 1/10*ticket[i];
if((ticket[i]>=35000)&&(ticket[i]<55000))
discount[i] = 12/100*ticket[i];
if((ticket[i]>=55000)&&(ticket[i]<=70000))
discount[i] = 16/100*ticket[i];
else if(ticket[i]>70000)
discount[i] = 18/100*ticket[i];
netamt[i] = ticket[i]-discount[i];
}
System.out.println("Sl.No.\tName\tTicket Charges\t Discount\t Net
Ammount");
for(int i =0;i<15;i++)
System.out.println(" "+(i+1)+"\t "+Name[i]+"\t
"+ticket[i]+"\t
"+discount[i]+"\t "+netamt[i]);
}
}
Question 7
Write a menu driven program to accept a number and check and display whether it is a prime number or not OR an Automorphic number or not. (Use switch-case statement)
(a) Prime number A number is said to be a prime number if it is divisible only by l and itself and not by any other number
Example 3, 5, 7, 11, 13 etc.
(b) Automorphic number An automorphic number is the number which is contained in the last digit(s) of its square.
Example: 25 is an automorphic number as its square is 625 and 25 is present as the last two digits. |
|
Solution :
import
java.util.Scanner;
class
Question7
{
Scanner S = new Scanner(System.in);
int choice, number;
public boolean isPrime(int x)
{
for(int i = 2;i<x;i++)
if((x%i)==0)
return false;
return true;
}
public boolean isAutomorphic(int x)
{
int sq = x*x;
String num = Integer.toString(x);
String square = Integer.toString(sq);
if(square.endsWith(num))
return true;
else
return false;
}
public void main()
{
System.out.println("Enter the number");
number = S.nextInt();
System.out.println("Press 1 to check number for Prime");
System.out.println("Press 2 to check number for Automorphic");
System.out.println("Press any other key to exit");
System.out.println("Enter your choice :-");
choice = S.nextInt();
switch(choice)
{
case 1: if(isPrime(number))
System.out.println("It is a prime number");
else
System.out.println("It is not a prime Number");
break;
case 2: if(isAutomorphic(number))
System.out.println("It is an Automorphic number");
else
System.out.println("It is not an Automorohic Number");
break;
default: System.exit(0);
break;
}
}
}
Question 8
Write a program to store 6 element in an array P, and 4 elements in an array Q and produce a third array R, containing all elements of array P and Q.
Display the resultant array.
Solution :
import
java.util.Scanner;
class
Question8
{
Scanner S = new Scanner(System.in);
int P[] = new int[6];
int Q[] = new int[4];
int R[] = new int[10];
void main()
{
System.out.println("Enter the elements of Array 1");
for(int i =0;i<6;i++)
{
P[i] = S.nextInt();
R[i] = P[i];
}
System.out.println("Enter the elements of Array 2");
for(int i =0;i<4;i++)
{
Q[i] = S.nextInt();
R[i+6]= Q[i];
}
System.out.println("Resultant Array :-");
for(int i =0;i<10;i++)
{
System.out.println(R[i]);
}
}
}
Question 9
Write a program to input a string in uppercase and print the frequency of each character.
Solution :
|
import java.util.Scanner;
class
Quection9
{
Scanner S = new Scanner(System.in);
public void main()
{
System.out.println("Enter the String in UPPERCASE");
String str = S.nextLine();
System.out.println("CHARACTERS \t fREQUENCY");
for(char ch = 'A';ch<='Z';ch++)
{
int freq = 0;
for(int i = 0;i<str.length();i++)
{
if(ch==str.charAt(i))
freq++;
}
if(freq>0)
{
System.out.println(ch+"
\t "+freq);
}
}
}
}
| 
