Sharpen Your Skills: Programming Languages Practice Q & A

1

Question- Write a program to find sum of two integer number which is enter by user?

Answer-

//File name must save with Program1.java

package csdt;

import java.util.Scanner;

class Program1

{

public static void main(String []args)

{

Scanner sc=new Scanner(System.in);

System.out.println("Enter 1st Number");

int n1=sc.nextInt();

System.out.println("Enter 2nd Number");

int n2=sc.nextInt();

int sum=n1+n2;

System.out.println("Addition is "+sum);

}

2

Question- Write a program to enter cost of pen from user and find cost of 50 pen cost with 10% discount?

Answer-

package csdt;

import java.util.Scanner;

class Program2

{

public static void main(String []args)

{

Scanner sc=new Scanner(System.in);

System.out.println("Enter Cost of a Pen");

int cost=sc.nextInt();

int totalcost=cost*50;

int dis=totalcost*10/100;

int pay_amt=totalcost-dis;

System.out.println("Total Cost is"+totalcost);

System.out.println("Discount is "+dis);

System.out.println("You pay only"+pay_amt);

}

3

Question- Question- Write a program to find the area of circle?

Answer-

import java.io.*;

import java.util.Scanner;

public class TestClass {

public static void main(String[] args)
{

Scanner input=new Scanner(System.in);

double x=input.nextDouble();

double ar= Math.PI*x*x;

System.out.printf("%.2f",ar);

}

4

Question- Write a program to find area of rectangle in JAVA?

Answer-

import java.io.*;

import java.util.Scanner;

public class TestClass {

public static void main(String[] args) {

Scanner sc=new Scanner(System.in);

int length=sc.nextInt();

int breadth=sc.nextInt();

int area;

area=length*breadth;

System.out.println("Area="+area);

}

5

Question- Write a program to find Area of Rhombus in JAVA?

Answer-

import java.io.*;

import java.util.Scanner;

public class TestClass {

public static void main(String[] args) {

Scanner sc=new Scanner(System.in);

int a=sc.nextInt();

int b=sc.nextInt();

int c=(a*b)/2;

System.out.println("Area of Rhombus is "+c);

}

6

Question- Write a program to find area of the room in JAVA?

Answer-

import java.io.*;

import java.util.Scanner;

public class TestClass {

public static void main(String[] args) {

Scanner sc=new Scanner(System.in);

float l=sc.nextFloat();

float b=sc.nextFloat();

System.out.print("The area of the room is "+String.format("%.2f",(l*b))+" square feet");

}

7

Question- Write a program to find area of the field in JAVA?

Answer-

import java.io.*;

import java.util.Scanner;

public class TestClass {

public static void main(String[] args) {

Scanner sc=new Scanner(System.in);

double area;

double l=sc.nextDouble();

double w=sc.nextDouble();

area=(l*w);

area=area/43560;

System.out.printf("The area of the field is "+String.format("%.2f",area)+" acres");

}

8

Question- Write a program to find area of the Triangle in JAVA?

Answer-

import java.io.*;

import java.util.Scanner;

public class TestClass {

public static void main(String[] args) {

Scanner sc=new Scanner(System.in);

float l=sc.nextFloat();

float b=sc.nextFloat();

System.out.print("Area of Triangle is "+(0.5*l*b));

}

9

Question- Write a program to Find ceil of a/b without using ceil() function in JAVA?

Answer-

Find ceil of a/b without using ceil() function

Input : a = 5, b = 4

Output : 2

Explanation: a/b = ceil(5/4) = 2

Input : a = 10, b = 2

Output : 5

Explanation: a/b = ceil(10/2) = 5

Formula for finding ceil value without using function:

ceilVal = (a+b-1) / b

Using simple maths, we can add the denominator to the numerator and subtract 1 from it and then divide it by denominator to get the ceiling value.

import java.io.*;

import java.util.Scanner;

public class TestClass {

public static void main(String[] args) {

Scanner sc=new Scanner(System.in);

int a=sc.nextInt();

int b=sc.nextInt();

int val = (a + b - 1) / b;

System.out.println("The ceiling value of a/b is "

+ val);

}

10

Question- Program for display camel case in java.

Answer-

Java uses CamelCase as a practice for writing names of methods, variables, classes, packages and constants. Camel case in Java Programming : It consists of compound words or phrases such that each word or abbreviation begins with a capital letter or first word with a lowercase letter, rest all with capital.

import java.io.*;

import java.util.*;

public class TestClass

{

public static void main(String[] args)

{

Scanner sc = new Scanner(System.in);

String text = sc.nextLine();

String[] words = text.split("[A-Z]");

System.out.println(words.length);

sc.close();

}

11

Question- Write a program to convert centigrade to fahrenheit.

Answer-

import java.io.*;

import java.util.Scanner;

public class TestClass {

public static void main(String[] args) {

float cen;

double fah;

Scanner scan = new Scanner(System.in);

cen = scan.nextFloat();

fah = (1.8*cen) + 32;

System.out.print( + fah);

}

12

Question- Write a program to concat two string.

Answer-

import java.io.*;

import java.util.*;

public class TestClass {

public static void main(String[] args) {

Scanner sc = new Scanner(System.in);

String a = sc.nextLine();

String b = sc.nextLine();

String c = a+b;

System.out.println(c);

}

13

Question- Write a program to convert integer number to float.

Answer-

import java.io.*;

import java.util.Scanner;

public class TestClass {

public static void main(String[] args) {

Scanner in = new Scanner(System.in);

int a=in.nextInt();

float b=a;

System.out.println(b);

}

14

Question- Write a program to find volume of cylinder.

Answer-

import java.io.*;

import java.util.Scanner;

public class TestClass {

public static void main(String[] args) {

Scanner sc=new Scanner(System.in);

double PI=3.14;

float radius=sc.nextFloat();

float length=sc.nextFloat();

double area=radius*radius*PI;

double volume=area*length;

System.out.println(String.format("%.02f",area));

System.out.println(String.format("%.02f",volume));

}

15

Question- Write a program to find number of year and days from given minutes in Java.

Answer-

import java.io.*;

import java.util.Scanner;

public class TestClass {

public static void main(String[] args) {

Scanner input = new Scanner(System.in);

int minutes = input.nextInt();

int year = minutes / 525600;

int day = minutes / 21600;

int remainingMinutes = day % 21600;

System.out.println( year);

System.out.println(remainingMinutes);

}

16

Question- Write a program for finding year and hours from given minutes in Java.

Answer-

import java.io.*;

import java.util.Scanner;

public class TestClass {

public static void main(String[] args) {

Scanner sc=new Scanner(System.in);

long min=sc.nextLong();

long yr=min/(365*24*60);

long hours=(min%(365*24*60))/(24*60);

System.out.print(yr+"\n"+hours);

}

17

Question- Write a program for swaping two integer number.

Answer- package csdtPatna;

import java.util.Scanner;

public class SwapNumber

{

public static void main(String []args)

{

//Creating object of Scanner class for taking input from user

Scanner sc=new Scanner(System.in);

System.out.println("Enter 1st number");

int n1=sc.nextInt();

System.out.println("Enter 2nd number");

int n2=sc.nextInt();

System.out.println("Befour swaping values are n1="+n1+" and n2 is "+n2);

int temp=n1;

n1=n2;

n2=temp;

System.out.println("After swaping values are n1="+n1+" and n2 is "+n2);

}

18

Question- Write a program for swaping two integer number without using third variable.

Answer-

package csdtPatna;

import java.util.Scanner;

public class SwapNumber

{

public static void main(String []args)

{

//Creating object of Scanner class for taking input from user

Scanner sc=new Scanner(System.in);

System.out.println("Enter 1st number");

int n1=sc.nextInt();

System.out.println("Enter 2nd number");

int n2=sc.nextInt();

System.out.println("Befour swaping values are n1="+n1+" and n2 is "+n2);

n1=n1+n2;

n2=n1-n2;

n1=n1-n2;

System.out.println("After swaping values are n1="+n1+" and n2 is "+n2);

}

19

Question- Write a program for finding percentage of 3 enter subject marks.

Answer-

package csdtPatna;

import java.util.Scanner;

public class SubjectMarks

{

public static void main(String []args)

{

//Creating object of Scanner class for taking input from user

Scanner sc=new Scanner(System.in);

System.out.println("Enter 1st Subject marks math is:");

int n1=sc.nextInt();

System.out.println("Enter 2nd Subject marks phy is:");

int n2=sc.nextInt();

System.out.println("Enter 3rd Subject marks english is:");

int n3=sc.nextInt();

int TotalMarks=n1+n2+n3;

int per=TotalMarks/3;

System.out.println("Total Subject Marks is: "+TotalMarks+" and Percentage is "+per);

}

20

Question- Write a program for finding reverse of 3 digits number without using loop.

Answer-

package csdtPatna;

import java.util.Scanner;

public class FindReverse

{

public static void main(String []args)

{

//Creating object of Scanner class for taking input from user

Scanner sc=new Scanner(System.in);

System.out.println("Enter 3 digits number:");

int n1=sc.nextInt();

int t=n1;

int rev=0;

rev=rev*10+n1%10;

n1=n1/10; //Ater this process number become 2 digits

rev=rev*10+n1%10;

n1=n1/10; //Ater this process number become 1 digits

rev=rev*10+n1;

System.out.println("Given number is: "+t+" and Reverse is "+rev);

}

21

Question- Write a program for finding sum of 3 digits number without using loop.

Answer-

package csdtPatna;

import java.util.Scanner;

public class FindSumOfDigit

{

public static void main(String []args)

{

//Creating object of Scanner class for taking input from user

Scanner sc=new Scanner(System.in);

System.out.println("Enter 3 digits number:");

int n1=sc.nextInt();

int t=n1;

int s=0;

s=s+n1%10;

n1=n1/10; //Ater this process number become 2 digits

s=s+n1%10;

n1=n1/10; //Ater this process number become 1 digits

s=s+n1;

System.out.println("Given number is: "+t+" and Sum of 3 digits number is "+s);

}

22

Question- Write a program for finding Multiplication of 3 digits number without using loop.

Answer-

package csdtPatna;

import java.util.Scanner;

public class FindSumOfDigit

{

public static void main(String []args)

{

//Creating object of Scanner class for taking input from user

Scanner sc=new Scanner(System.in);

System.out.println("Enter 3 digits number:");

int n1=sc.nextInt();

int t=n1;

int m=1;

m=m*n1%10;

n1=n1/10; //Ater this process number become 2 digits

m=m*n1%10;

n1=n1/10; //Ater this process number become 1 digits

m=m*n1;

System.out.println("Given number is: "+t+" and multilication of 3 digits number is "+m);

}

23

Question- Write a program which accept temperature in Farenheit and print it in centigrade.

Answer-

package csdtPatna;

import java.util.Scanner;

public class Temperature

{

public static void main(String []args)

{

//Creating object of Scanner class for taking input from user

Scanner sc=new Scanner(System.in);

System.out.println("Enter temperature in Farenheit : ");

int F=sc.nextInt();

int C=5*(F-32)/9;

System.out.println("Temperature in celcius is : "+C);

}

24

Question- Write a program which accept principle, rate and time from user and print the simple interest.

Answer-

package csdtPatna;

import java.util.Scanner;

public class SimpleInterest

{

public static void main(String []args)

{

//Creating object of Scanner class for taking input from user

Scanner sc=new Scanner(System.in);

System.out.println("Enter Principle : ");

int P=sc.nextInt();

System.out.println("Enter Rate : ");

int R=sc.nextInt();

System.out.println("Enter Time : ");

int T=sc.nextInt();

int si=(P*R*T)/100;

System.out.println("Simple Interest is : "+si);

}

Programming Practice

Sharpen Your Skills: Programming Languages Practice Q&A

Java Programming Language

Programming Practice

Interview Question / Answer