Sample java programs for beginners. This slides can help you to print few words in java. Also it helps to do arithmetic calculations and will give you basic concept of for loop, do while loop and if else statements in java. Area of a square.

1. JAVA PROGRAMS
FATHIMA LIDIYA

2. import java.util.Scanner;
public class AreaOfSquare
{
public static void main(String args[])
{
int length, area;
Scanner sc = new Scanner(System.in);
System.out.println("Enter the length of the square ::");
length = sc.nextInt();
area = length* length;
System.out.println("Area of the square is ::"+area);
}
}
Area of a square

3. Output: Area of a square
Enter the length of the square :: 55
Area of the square is ::3025

4. Identify the number- Odd or Even
import java.util.Scanner;
class CheckEvenOdd
{
public static void main(String args[])
{
int num;
System.out.println("Enter an Integer number:");
Scanner input = new Scanner(System.in);
num = input.nextInt();
if ( num % 2 == 0 )
System.out.println("Entered number is even");
else
System.out.println("Entered number is odd");
} }

5. Output: odd or even
Output 1:
Enter an Integer number: 78
Entered number is even
Output 2:
Enter an Integer number: 77
Entered number is odd

6. class Descending
{
public static void main(String args[])
{
int i=10;
do
{
System.out.println(i);
i--;
}
while(i>1);
}
}
Print numbers in descending order.

7. Output: Descending order
10
9
8
7
6
5
4
3
2

8. class SumIntegers
{
public static void main(String args[])
{
int sum = 0;
for (int x = 1; x <= 20; x++)
{
sum = sum + x;
}
System.out.println("Sum: " + sum);
}
}
Sum of first 20 integers

9. Output: Sum of first 20 integers
Sum: 210