Core Java Practice Program for Beginners

Write a program to find out the number of illiterate men from the population of 80,000 people. From the total population,52% are men, out of which only 35% are literate.

Answer:- 

public class Population {

public static void main(String[] args) {

int population = 80000;

int men,literate,illiterate;

men = 52 * population / 100;

literate = 35 * men / 100;

illiterate = men - literate ;

System.out.println("------------------------------------------------");

System.out.println("Total Men ="+men);

System.out.println("Total literate men ="+literate);

System.out.println("Total illiterate men ="+illiterate);

System.out.println("------------------------------------------------");

}

}

Core Java Practice Program

Arnold wants to write program to convert the temperature from Celsius to Fahrenheit. To calculate the temperature, Arnold use the following formula:-

                      F = C *9/5 +32

Here, C is the temperature in Celsius and F is the temperature in Fahrenheit.Help Arnold to perform desired task.

Answer:-

public class TemperatureConversion {

public static void main(String[] args) {

double c;

double f;

c=89;

f= c * 9/5 + 32;

System.out.println("------------------------------------------");

System.out.println("Temperature in Fahrenheit ="+f);

System.out.println("------------------------------------------");

}

}

Core Java Practice Problem

Mary Needs To Write A Program To Calculate The Volume Of The Cylinder. To Calculate The Volume Of The Cylinder,Mary Needs To Use The Following Formula

                      Volume =

π

r

²h

Here, r is the radius of the cylinder, h is the height of the cylinder and the value of pie is 3.14. Help Mary To Perform Desired Task.

  

Answer:-

public class VolumeOfTheCylinder 

{

public static void main(String[] args) 

         {

int r, h;

double volume;

r = 6;

h = 15;

volume = 3.14 * r* r*h;

System.out.println("----------------------------------------");

System.out.println("Volume  ="+volume);

System.out.println("----------------------------------------");

 }

}

 

Core Java Practice Program

John Needs To Write A Program To Calculate The Total Distance Travelled By A Vehicle. To Calculate The Distance, John  Can Use The Following Formula:- 

                     Distance = ut + (at²)/2

Here, u is the initial velocity (meters per second),  a is the acceleration(meter per second²), and t is the time(seconds). Help John to perform desired task.

Answer:-

public class Distance {

public static void main(String[] args) {

int u , a , t , distance;

u = 23;

a= 7;

t= 12;

distance = u * t + (a * t * t )/2;

System.out.println("-----------------------------------");

System.out.println("Distance Travelled ="+distance + "meter");

System.out.println("-----------------------------------");

}

}