// Hello java program
class Simple{
public static void main(String args[]){
System.out.println("Hello Java");
}
}
// ADD two integers
public class AddTwoIntegers {
public static
void main(String[] args) {
int first =
10;
int second
= 20;
int sum =
first + second;
System.out.println("The sum is: " + sum);
}
}
// Input
import java.util.Scanner;
class Input
{
public static
void main(String args[])
{
int a;
float b;
String s;
Scanner in =
new Scanner(System.in);
System.out.println("Enter a string");
s =
in.nextLine();
System.out.println("You entered string "+s);
System.out.println("Enter an integer");
a = in.nextInt();
System.out.println("You entered integer "+a);
System.out.println("Enter a float");
b =
in.nextFloat();
System.out.println("You entered float "+b);
}
}
// ODD or EVEN
import java.util.Scanner;
class OddOrEven
{
public static void main(String args[])
{
int x;
System.out.println("Enter an integer to check if it is odd or even ");
Scanner in = new Scanner(System.in);
x = in.nextInt();
if ( x % 2 == 0 )
System.out.println("You entered an even number.");
else
System.out.println("You entered an odd number.");
}
}
// Factorial
import java.util.Scanner;
class Factorial
{
public static void main(String args[])
{
int n, c, fact = 1;
System.out.println("Enter an integer to calculate it's factorial");
Scanner in = new Scanner(System.in);
n = in.nextInt();
if (n < 0)
System.out.println("Number should be non-negative.");
else
{
for (c = 1; c <= n; c++)
fact = fact*c;
System.out.println("Factorial of "+n+" is = "+fact);
}
}
}
// Largest Of Three Numbers
import java.util.Scanner;
class LargestOfThreeNumbers
{
public static void main(String args[])
{
int x, y, z;
System.out.println("Enter three integers ");
Scanner in = new Scanner(System.in);
x = in.nextInt();
y = in.nextInt();
z = in.nextInt();
if ( x > y && x > z )
System.out.println("First number is largest.");
else if ( y > x && y > z )
System.out.println("Second number is largest.");
else if ( z > x && z > y )
System.out.println("Third number is largest.");
else
System.out.println("Entered numbers are not distinct.");
}
}
// Swap two numbers
public class SwapNumbers {
public static void main(String[] args) {
float first = 1.20f, second = 2.45f;
System.out.println("--Before swap--");
System.out.println("First number = " + first);
System.out.println("Second number = " + second);
// Value of first is assigned to temporary
float temporary = first;
// Value of second is assigned to first
first = second;
// Value of temporary (which contains the initial value of first) is assigned to second
second = temporary;
System.out.println("--After swap--");
System.out.println("First number = " + first);
System.out.println("Second number = " + second);
}
}
No comments:
Post a Comment